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Takehiko Sato

Section

Institute of Fluid Science

Job title

Professor

Degree

博士（工学）（東北大学）
修士（工学）（東北大学）

researchmap

https://researchmap.jp/read0055329

J-GLOBAL ID

200901071431209848

Committee Memberships 129

日本機械学会　環境工学部門第3技術委員会委員

2020/04 - Present
静電気学会　東北支部長

2018/04 - Present
静電気学会　運営理事

2018/03 - Present
静電気学会「放電プラズマによる水処理研究委員会」　委員

2015/03 - Present
日本機械学会　環境工学部門総務委員会委員

2025/04 - 2026/03
日本機械学会　2025年度環境工学部門部門学術誌編修委員会委員長

2025/04 - 2026/03
静電気学会　副会長

2025/01 - 2025/12
日本機械学会　2023年度環境工学部門広報委員会委員長

2023/04 - 2024/03
静電気学会　代議員（理事）

2022/01 - 2023/12
日本機械学会　代表会員

2021/04 - 2023/04
日本機械学会　2022年度環境工学部門広報委員会副委員長

2022/04 - 2023/03
日本機械学会東北支部　2022年度（第58期）商議員

2022/03 - 2023/02
プラズマ・核融合学会　専門委員会「プラズマによる生体荷電制御の科学」委員

2019/04 - 2021/04
日本機械学会　2020年度 (第98期) 技術ロードマップ委員会委員

2020/04 - 2021/03
日本機械学会　環境工学部門総務委員会委員

2020/04 - 2021/03
日本機械学会　環境工学部門先進サステイナブル都市・ロードマップ委員会委員長

2020/04 - 2021/03
日本機械学会　2019年度年次大会実行委員会委員

2018/04 - 2019/09
日本機械学会　環境工学部門表彰委員会委員長

2018/04 - 2019/03
日本機械学会　環境工学国際ワークショップ (IWEE2019) 実行委員会委員長

2018/04 - 2019/03
日本機械学会　環境工学部門シンポジウム (2019) 実行委員会委員長

2018/04 - 2019/03
日本機械学会　環境工学部門部門組織・企画委員会委員長

2018/04 - 2019/03
日本機械学会　環境工学部門総務委員会副委員長

2018/04 - 2019/03
日本機械学会　環境工学部門副部門長

2018/04 - 2019/03
日本機械学会プラズマアクチュエータ研究会　委員

2013/12 - 2018/11
日本機械学会　2017年度（第95期）代表会員

2017/04 - 2018/04
静電気学会　理事

2017/04 - 2018/03
プラズマ・核融合学会専門委員会「プラズマ理工学と農学・食品学・水産学の融合科学」　委員

2016/04 - 2018/03
日本機械学会東北支部　商議員

2017/03 - 2018/02
静電気学会　代議員

2016/03 - 2017/12
プラズマ・核融合学会専門委員会「プラズマ理工学と医学・農学の融合科学」　委員

2013/04 - 2016/03
日本機械学会東北支部　2013年度（第49期）商議員

2014/04 - 2015/03
日本機械学会　2014年度法工学専門会議運営委員会委員

2014/04 - 2015/03
日本機械学会　2013年度（第91期）環境工学部門第3技術委員会委員

2014/04 - 2015/03
日本機械学会東北支部　2013年度（第49期）商議員

2014/04 - 2015/03
日本機械学会　2014年度法工学専門会議運営委員会委員

2014/04 - 2015/03
日本機械学会　2013年度（第91期）環境工学部門第3技術委員会委員

2014/04 - 2015/03
日本機械学会高度物理刺激と生体応答に関する研究分科会　主査

2013/04 - 2015/03
日本機械学会高度物理刺激と生体応答に関する研究分科会　主査

2013/04 - 2015/03
日本機械学会　2013年度（第91期）校閲委員

2013/04 - 2014/03
日本機械学会第91期流体工学部門運営委員会　委員

2013/04 - 2014/03
日本機械学会　2013年度（第91期）環境工学部門第3技術委員会委員長

2013/04 - 2014/03
日本機械学会　2013年度（第91期）環境工学部門総務委員会委員

2013/04 - 2014/03
日本機械学会　2013年度（第91期）環境工学部門表彰委員会委員

2013/04 - 2014/03
日本機械学会　2013年度（第91期）環境工学部門部門組織・企画委員会委員

2013/04 - 2014/03
日本機械学会　2013年度（第91期）バイオエンジニアリング部門部門講演会実行委員会委員

2013/04 - 2014/03
日本機械学会東北支部2013年度（第49期）商議員　委員

2013/04 - 2014/03
日本機械学会東北支部2013年度（第49期）会計幹事　幹事

2013/04 - 2014/03
日本機械学会　2013年度（第91期）校閲委員

2013/04 - 2014/03
日本機械学会第91期流体工学部門運営委員会　委員

2013/04 - 2014/03
日本機械学会　2013年度（第91期）環境工学部門第3技術委員会委員長

2013/04 - 2014/03
日本機械学会　2013年度（第91期）環境工学部門総務委員会委員

2013/04 - 2014/03
日本機械学会　2013年度（第91期）環境工学部門表彰委員会委員

2013/04 - 2014/03
日本機械学会　2013年度（第91期）環境工学部門部門組織・企画委員会委員

2013/04 - 2014/03
日本機械学会　2013年度（第91期）バイオエンジニアリング部門部門講演会実行委員会委員

2013/04 - 2014/03
日本機械学会東北支部2013年度（第49期）商議員　委員

2013/04 - 2014/03
日本機械学会東北支部2013年度（第49期）会計幹事　幹事

2013/04 - 2014/03
電気学会パルスパワーおよび放電の農水系利用調査専門委員会　委員

2012/01 - 2013/12
電気学会パルスパワーおよび放電の農水系利用調査専門委員会　委員

2012/01 - 2013/12
日本溶射学会学会誌査読員　査読員

2010/04 - 2013/06
日本溶射学会学会誌査読員　査読員

2010/04 - 2013/06
日本機械学会第90期流体工学部門運営委員会　委員

2012/04 - 2013/03
日本機械学会　2012年度（第90期）会員部会委員

2012/04 - 2013/03
日本機械学会　2012年度（第90期）環境工学部門第3技術委員会委員長

2012/04 - 2013/03
日本機械学会　2012年度（第90期）校閲委員

2012/04 - 2013/03
日本機械学会　2012年度（第90期）環境工学部門部門組織・企画委員会委員

2012/04 - 2013/03
日本機械学会　2012年度交通・物流部門代議員

2012/04 - 2013/03
日本機械学会　2012年度（第90期）環境工学部門総務委員会委員

2012/04 - 2013/03
日本機械学会第90期流体工学部門運営委員会　委員

2012/04 - 2013/03
日本機械学会　2012年度（第90期）会員部会委員

2012/04 - 2013/03
日本機械学会　2012年度（第90期）環境工学部門第3技術委員会委員長

2012/04 - 2013/03
日本機械学会　2012年度（第90期）校閲委員

2012/04 - 2013/03
日本機械学会　2012年度（第90期）環境工学部門部門組織・企画委員会委員

2012/04 - 2013/03
日本機械学会　2012年度交通・物流部門代議員

2012/04 - 2013/03
日本機械学会　2012年度（第90期）環境工学部門総務委員会委員

2012/04 - 2013/03
日本学術振興会特別研究委等審査会専門委員及び国際事業委員会書面審査員　委員

2011/08 - 2012/07
日本学術振興会特別研究委等審査会専門委員及び国際事業委員会書面審査員　委員

2011/08 - 2012/07
応用物理学会プラズマエレクトロニクス分科会　幹事

2010/04 - 2012/03
日本機械学会環境工学部門英文ジャーナル編修委員会　委員

2010/04 - 2012/03
応用物理学会プラズマエレクトロニクス分科会　幹事

2010/04 - 2012/03
日本機械学会環境工学部門英文ジャーナル編修委員会　委員

2010/04 - 2012/03
日本機械学会環境工学部門第３技術委員会　委員

2006/04 - 2012/03
日本機械学会環境工学部門第３技術委員会　委員

2006/04 - 2012/03
静電気学会評議員　評議員

2011/01 - 2011/12
静電気学会地区担当理事　地区担当理事

2011/01 - 2011/12
静電気学会評議員　評議員

2011/01 - 2011/12
静電気学会地区担当理事　地区担当理事

2011/01 - 2011/12
電気学会パルス電磁エネルギーの生体作用と高度応用調査専門委員会　委員

2009/01 - 2011/12
電気学会パルス電磁エネルギーの生体作用と高度応用調査専門委員会　委員

2009/01 - 2011/12
日本学術振興会「プラズマ照射による医療用品の滅菌、エンドトキシンならびにプリオン不活化法と応用」に関する研究開発専門委員会　委員

2011/04 - 2011/09
日本学術振興会「プラズマ照射による医療用品の滅菌、エンドトキシンならびにプリオン不活化法と応用」に関する研究開発専門委員会　委員

2011/04 - 2011/09
電気学会「エネルギー・環境分野におけるプラズマケミストリーのモデリングおよびシミュレーション技術調査専門委員会」　委員

2008/10 - 2011/09
電気学会「エネルギー・環境分野におけるプラズマケミストリーのモデリングおよびシミュレーション技術調査専門委員会」　委員

2008/10 - 2011/09
静電気学会バイオ・プラズマプロセス研究委員会　委員

2010/01 - 2011/03
日本混相流学会評議員　評議員

2008/08 - 2010/07
日本混相流学会評議員　評議員

2008/08 - 2010/07
日本混相流学会研究企画委員会研究分科会「R&P Committee 6 機能性流体のマルチスケール流動とシステム化」　委員

2007/09 - 2010/06
日本混相流学会研究企画委員会研究分科会「R&P Committee 6 機能性流体のマルチスケール流動とシステム化」　委員

2007/09 - 2010/06
日本機械学会第87期校閲委員　委員

2009/04 - 2010/03
日本機械学会第87期産業・化学機械と安全部門　代議員

2009/04 - 2010/03
日本機械学会第87期校閲委員　委員

2009/04 - 2010/03
日本機械学会第87期産業・化学機械と安全部門　代議員

2009/04 - 2010/03
プラズマ・核融合学会専門委員会「プラズマーバイオ融合科学への新展開」　委員

2008/09 - 2010/03
プラズマ・核融合学会専門委員会「プラズマーバイオ融合科学への新展開」　委員

2008/09 - 2010/03
日本機械学会大気圧プラズマ流による人間環境保全技術に関する研究分科会 (P-SCD360)　主査

2007/04 - 2010/03
日本機械学会大気圧プラズマ流による人間環境保全技術に関する研究分科会 (P-SCD360)　主査

2007/04 - 2010/03
日本機械学会第86期校閲委員　委員

2008/04 - 2009/03
日本機械学会第86期校閲委員　委員

2008/04 - 2009/03
日本機械学会流体工学部門第85期幹事　幹事

2007/04 - 2008/03
日本機械学会環境工学部門第85期総務委員会　幹事

2007/04 - 2008/03
日本機械学会環境工学部門第85期運営委員会　幹事

2007/04 - 2008/03
日本機械学会流体工学部門第85期幹事　幹事

2007/04 - 2008/03
日本機械学会環境工学部門第85期総務委員会　幹事

2007/04 - 2008/03
日本機械学会環境工学部門第85期運営委員会　幹事

2007/04 - 2008/03
日本溶射協会編集委員会　査読委員

2005/04 - 2007/03
日本溶射協会編集委員会　査読委員

2005/04 - 2007/03
日本機械学会論文集編集委員会　校閲委員

2005/04 - 2006/03
日本機械学会日本機械学会誌トピックス委員　委員

2005/04 - 2006/03
日本機械学会論文集編集委員会　校閲委員

2005/04 - 2006/03
日本機械学会日本機械学会誌トピックス委員　委員

2005/04 - 2006/03
日本機械学会流体工学部門機能性流体工学の先端融合化に関する研究会　幹事

2003/04 - 2006/03
日本機械学会流体工学部門機能性流体工学の先端融合化に関する研究会　幹事

2003/04 - 2006/03
日本機械学会東北支部第40期総会・講演会実行委員会　委員

2004/04 - 2005/03
日本機械学会東北支部第40期総会・講演会実行委員会　委員

2004/04 - 2005/03
日本機械学会流体工学部門広報委員会　委員

2003/04 - 2005/03
Japan Thermal Spraying Society　査読委員

2003/04 - 2005/03
日本機械学会流体工学部門広報委員会　委員

2003/04 - 2005/03
日本溶射協会編集委員会　査読委員

2003/04 - 2005/03
日本機械学会論文集編集委員会　校閲委員

2002/04 - 2005/03
日本機械学会論文集編集委員会　校閲委員

2002/04 - 2005/03

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Professional Memberships 7

静電気学会
日本機械学会
IEEE
日本混相流学会
日本流体力学会
応用物理学会
日本溶射学会

︎Show all ︎Show first 5

Research Interests 10

X線
紫外線
気泡
帯電
殺菌
細胞応答
高速ナノ液滴
準液滴
Sterilization
Nonequilibrium Plasma Flow

Research Areas 4

Environmental science/Agricultural science / Environmental load reduction/restoration technology /
Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Applied biofunctional and bioprocess engineering /
Energy / Basic plasma science / Plasma Science and Technology
Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Fluid engineering / Fluid Mechanics

Awards 27

功績賞

2023/09　一般社団法人静電気学会
国際交流賞

2023/07　日本機械学会環境工学部門
JSME Award (Research Paper)

2021/04　The Japan Society of Mechanical Engineers　Sterilization in liquids by air plasma under intermittent discharge
Student Best Presentation Award

2020/10　17th International Conference on Flow Dynamics (ICFD2020)　Comparison of the Concentration of Reactive Chemical Species in Water by Plasma Jet and Plasma-activated Microbubbles Jet
Best Poster Presentation Award

2019/07　6th Japan-Taiwan Workshop on Plasma Life Science and Technology (2019JTPL)　Measurements of Reactive Chemical Species in Atmospheric-Pressure Corona Plasma Activated Water
Best Poster Presentation Award

2019/07　6th Japan-Taiwan Workshop on Plasma Life Science and Technology (2019JTPL)　Plasma-generator-supplied Nanosecond Pulsed Current Induces Fibrosarcoma Cells to Mesenchymal Type by Actin Polymerization
Best Poster Presentation Award

2019/07　6th Japan-Taiwan Workshop on Plasma Life Science and Technology (2019JTPL)　Reduction of nitrogen oxides concentration in plasma sterilization
Best Poster Presentation Award

2019/06　International Workshop on Environmental Engineering 2019 (IWEE2019)　Development of electrodes for air plasma sterilization
Best Poster Paper Award

2018/12　The 5th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL2018)　Effect of Exposure to Electrical Pulse Current on Cell Response
Best Poster Paper Award

2017/12　The 10th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT 2017)　Effect of Pulsed Current on Cell Activity
日本機械学会流体工学部門フロンティア表彰

2017/10　日本機械学会
Best Poster Presentation Award

2017/06　The 4th Japan-Taiwan Workshop on Plasma Life Science and Technology (2017JTPL)　Directed Jetting from Cavitation Bubbles Subject to Traveling Pressure Wave
Excellent Poster Presentation Award

2016/12　The 3rd Taiwan-Japan Workshop on Plasma Life Science and Technology (2016TJPL)　Pressure Measurement of Underwater Shock Waves by Optical Fiber Hydrophone
Excellent Oral Presentation Award

2016/12　The 3rd Taiwan-Japan Workshop on Plasma Life Science and Technology (2016TJPL)　Effect of discharge in a plasma-induced bubble on cavitation dynamics
第40回静電気学会全国大会

2016/09　エクセレント・プレゼンテーション・アワード　負極性水中放電におけるストリーマチャネルの可視化
日本機械学会若手優秀講演フェロー賞

2016/03　第25回環境工学総合シンポジウム2015　プラズマを用いた小型滅菌装置の開発と性能評価
平成27年静電気学会論文賞

2015/11/13　静電気学会
Best Poster Award, 1st Prize

2014/10/18　World Sterilization Congress　Performance of the sterilization device using a low-temperature atmospheric pressure plasma
日本機械学会フェロー

2014/01/14　日本機械学会
エクセレント・プレゼンテーション・アワード

2013/09/11　静電気学会　水中1次ストリーマのナノ秒時間分解観測
トレック・宍戸奨励賞

2013/09/10　静電気学会　水中1次ストリーマのナノ秒時間分解観測
Best Paper Award

2013/08/09　International Plasma Chemistry Society　Role of pulsed repetitive current for positive primary streamers in water
日本機械学会環境工学部門研究業績賞

2011/06/30　日本機械学会
1st Prime in the Competition on fundamental investigations in the Institute of Theoretical and Applied Mechanics, Siberian Branch of Russian Academy of Sciences for 2003

2003/11/14　Institute of Theoretical and Applied Mechanics, Siberian Branch of Russian Academy of Sciences　Theoretical foundations of gas-thermal coatings formation of metal oxide powders, their experimental verification and application for combined computer modeling of plasma spraying process
日本混相流学会論文賞

2002/07/30　日本混相流学会　複雑流路内の超音速微粒子プラズマ流動の電磁場制御に関する研究
日本溶射協会奨励賞

2001/06/20　日本溶射協会　プラズマ溶射プロセスの最適化数値シミュレーション
日本機械学会賞（論文）

2001/04/05　日本機械学会　電磁場下の管内微粒子プラズマ流の数値シミュレーション

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Papers 313

Real-time detection of non-condensable gas in water vapor systems based on repetitive pulsed discharges for developing in situ probe International-journal Peer-reviewed

Siwei Liu, Yoji Tachibana, Tomoki Nakajima, Takehiko Sato

Review of Scientific Instruments　96　(7)　2025/07/07
Publisher: AIP Publishing
DOI： 10.1063/5.0255972 　

ISSN： 0034-6748

eISSN： 1089-7623

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High-temperature, high-pressure steam plays a critical role in industrial applications such as sterilization, power generation, and chemical processing. However, the presence of non-condensable gases (NCGs), such as air, can impede heat transfer, lower vapor pressure, and compromise the efficiency of processes like sterilization. This study proposes a novel real-time detection method for NCGs using a discharge-based probe near a cooling area. By monitoring emission intensities of nitrogen gas (a representative NCG) at a benchmark wavelength of 500 nm, the accumulation and release dynamics of NCGs under varying temperature conditions were analyzed. The experimental results demonstrated that the emission intensity trends correlated with NCG concentration difference caused by condensation, validating the probe’s ability to effectively detect and quantify NCGs. This approach not only enables precise monitoring of steam purity but also offers insights into collecting the NCGs in steam-based processes for enhanced safety and efficiency.
Influence of fine bubbles on generation efficiency of pulsed discharge underwater International-journal Peer-reviewed

Yuki Maeda, Ryosuke Takada, Katsuyuki Takahashi, Koichi Takaki, Yoshikatsu Ueda, Takehiko Sato

Japanese Journal of Applied Physics　64　(2)　026001/1-026001/8　2025/02/01
Publisher: IOP Publishing
DOI： 10.35848/1347-4065/adadd0 　

ISSN： 0021-4922

eISSN： 1347-4065

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Abstract The influence of fine bubbles introduced into water on the dielectric breakdown characteristics of discharge probability, discharge delay time, and arc probability was investigated. Fine bubbles were generated by the pressurized dissolution method. A needle-to-plate electrode was placed in the water where fine bubbles were introduced, and a pulsed voltage generated by a Blumlein line-type pulsed-forming network was applied to generate underwater plasma. The discharge onset voltage, discharge delay time, and arcing voltage decreased, and the discharge probability increased by introducing fine bubbles. The decrease in the discharge onset voltage is more significant in the case of argon fine bubbles than that of air fine bubbles. The influence of fine bubbles on the discharge onset voltage and the delay time is more significant than the longer gap length. On the other hand, the longer gap length on arcing voltage is more significant. These results suggest that the bubble at the vicinity of the electrode introduced by fine bubbles enhances the breakdown; however, the fine bubbles in the water between the electrodes do not affect much.
Impact of high-speed nanodroplets on various pathogenic bacterial cell walls Peer-reviewed

Yurina Tamura, Masato Kawamura, Takehiko Sato, Tomoki Nakajima, Siwei Liu, Takumi Sato, Shigeru Fujimura

Journal of Bacteriology　2024/10/09
Publisher: American Society for Microbiology
DOI： 10.1128/jb.00139-24 　

ISSN： 0021-9193

eISSN： 1098-5530

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ABSTRACT Although the development of disinfection technologies with novel mechanisms has stagnated, we demonstrate the bactericidal effects and mechanisms of high-speed nanodroplet generation technology. The first development of this technology in 2017 gushes out a water droplet of 10 nm in size at 50 m/s; however, the target surface does not become completely wet. Nanodroplets were exposed to biofilm models of Staphylococcus aureus , Pseudomonas aeruginosa , Escherichia coli , and Serratia marcescens . This phenomenon was verified when the nanodroplets collide with the surface of the bacteria at an impact pressure of ~75 MPa. S. aureus was exposed to nanodroplets for 30 seconds at 75 MPa, which exploded the bacterial body and completely sterilized. Eighteen MPa damaged the bacterial surface, causing peptidoglycan leakage. S. aureus was repaired and survives in this state. In contrast, in Gram-negative bacteria, nanodroplets with 18 MPa penetrated some biofilm-forming bacteria but did not hit all of them, and the viable count was not significantly reduced. Although all three bacterial species were completely sterilized at 75 MPa, the disinfectant effect was affected by the biomass of the biofilm formed. In summary, our findings prove that nanodroplets at 18 MPa on the bacterial surface were ineffective in killing bacteria, whereas at 75 MPa, all four bacterial species were completely sterilized. The disinfection mechanism involved a high-velocity collision of nanodroplets with the bacteria, physically destroying them. Our results showed that disinfection using this technology could be an innovative method that is completely different from existing disinfection techniques. IMPORTANCE Although existing disinfection techniques demonstrate bactericidal effects through chemical reactions, concerns regarding human toxicity and environmental contamination have been raised. To the best of our knowledge, this study is the first in the world to reveal that the use of this technology, with nanodroplets of less than 100 nm, can destroy and sterilize bacterial cells by colliding with biofilm-forming bacteria at 75 MPa. Furthermore, because this technology uses only water, it can solve the problems of human toxicity and environmental contamination caused by existing disinfection techniques. Because of its minimal water usage, it can be employed for sanitation worldwide without being limited to specific regions. Our report proposes an unprecedented physical disinfection approach that utilizes a high-speed nanodroplet generation technology.
Cellular response to plasma-generated electrical and chemical stimulation of equal electricity International-journal

Airi Nakayama, Siwei Liu, Ken-ichi Yano, Tomoki Nakajima, Takehiko Sato

Journal of Physics D: Applied Physics　57　(41)　415202/1-415202/9　2024/07/22
Publisher: IOP Publishing
DOI： 10.1088/1361-6463/ad6267 　

ISSN： 0022-3727

eISSN： 1361-6463

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Abstract Plasma medicine is a novel field of research that has the potential in life sciences, including cancer treatment. It has been believed that all of these potential applications depend on the chemical factor of the plasma. However, the electrical factors that are produced simultaneously with the chemical factors have not been researched thoroughly. To assess the effect of plasma on the response of cells, a system that enables simultaneous comparison of the effects of chemical and electrical factors of plasma with equal electricity was invented. This system separates the polarity of plasma and isolates the chemical species from the electric stimulation. Using this system, HT-1080 cells were exposed to plasma for 10 min, 1 h, and 24 h. The 10 min plasma treatment showed a clear difference in the polarity of plasma, where cells under exposure to positive plasma died while cells in other conditions survived. An hour of plasma treatment affected the cells under the negative plasma, where the cell viability was reduced to half. Meanwhile, the electric stimulation did not affect the cell viability but did alter the cell membrane. Collectively, this study demonstrates the differential effects of three factors (electric factor, positive plasma, negative plasma) under the same condition: both the electrical and chemical effects of plasma-generated stimuli with equal amounts of electricity were successfully observed.
An innovative method of pressure measurement inside a laser-induced cavitation bubble International-journal International-coauthorship Peer-reviewed

Satoshi Uehara, Takehiko Sato, Sayaka Kamata, Seiji Kanazawa, Yuka Iga, Tomoki Nakajima, Mohamed Farhat

Physics of Fluids　36　(4)　041706/1-041706/5　2024/04/15
Publisher: AIP Publishing
DOI： 10.1063/5.0206640 　

ISSN： 1070-6631

eISSN： 1089-7666

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This study proposes a novel method for measuring the pressure inside a laser-induced cavitation bubble during its expansion. Based on Paschen's theory, which relates electrical breakdown to gas pressure, applied voltage, and electrode distance, our approach uses two electrodes to estimate the cavitation bubble pressure at different expansion stages by noting the breakdown time at varying voltages. This method offers a high temporal resolution owing to its rapid electrical discharge response. The unveiled pressure during the expansion phase was approximately 0.4 atm. This value contradicts previous reports that assumed that the minimum pressure was close to the water vapor pressure.
Biofilm形成Staphylococcus aureusに対する高速ナノ液滴技術の殺菌メカニズム

田村友梨奈, 河村真人, 佐藤匠, 藤村茂, 佐藤岳彦, 中嶋智樹, Liu Siwei

日本化学療法学会雑誌　72　(1)　112-113　2024/01
Publisher: (公社)日本化学療法学会
ISSN： 1340-7007

eISSN： 1884-5886
Influence of electric potential-induced by atmospheric pressure plasma on cell response International-journal Peer-reviewed

Takamasa Okumura, Chia-Hsing Chang, Kazunori Koga, Masaharu Shiratani, Takehiko Sato

Scientific Reports　13　(1)　15960/1-15960/11　2023/09/25
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41598-023-42976-4 　

eISSN： 2045-2322

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Abstract Plasma irradiation leads not only active species, but also reactive chemical species, ultraviolet light, electric fields, magnetic fields, and shock waves. To date the effects of reactive chemical species have been mainly discussed. To understand the biological effect caused by an electric potential induced with an atmospheric-pressure plasma, the behavior of cell stimulated by electric potential was investigated using HeLa cell. The cell concentration assay revealed that less than 20% of cells inactivated by potential stimulation and the remained cells proliferate afterward. Fluorescent microscopic observation revealed that potential stimulation is appreciable to transport the molecules through membrane. These results show that potential stimulation induces intracellular and extracellular molecular transport, while the stimulation has a low lethal effect. A possible mechanism for this molecular transport by potential stimulation was also shown using numerical simulation based on an equivalent circuit of the experimental system including adhered HeLa cell. The potential formation caused by plasma generation is decisive in the contribution of plasma science to molecular biology and the elucidation of the mechanism underlying a biological response induction by plasma irradiation.
Plasma-based identification of gases in a laser-induced cavitation bubble International-journal International-coauthorship Peer-reviewed

Siwei Liu, Kaito Nitto, Outi Supponen, Sayaka Kamata, Tomoki Nakajima, Mohamed Farhat, Takehiko Sato

Applied Physics Letters　123　(9)　094102/1-094102/6　2023/08/28
Publisher: AIP Publishing
DOI： 10.1063/5.0164732 　

ISSN： 0003-6951

eISSN： 1077-3118

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This study presents a general methodology and an experimental approach to identify the gas components within laser-induced cavitation bubbles. A needle electrode inside the cavitation bubble, which introduces low electric energy into the bubble, produces a homogenous plasma discharge inside the vapor cavity. The primary bubble dynamics remain identical while the rebound bubble becomes about twice as large when a discharge is applied. The effect of non-condensable gases and the electric charge on bubble dynamics is explored theoretically, and the role of the electric charge is found to be significant. Optical emission spectroscopy reveals the evolution of emission lines from gases inside bubbles. H lines and OH lines are persistently observed in all cases, providing a dominant presence of water vapor. The results also confirm that the gases, which are initially present in the water rather than transported from the water, contribute to the optical emission characteristics with different dissolved gases.
各種院内感染起因菌の環境汚染モデルに対する高速ナノ液滴技術の殺菌効果

田村友梨奈, 河村真人, 佐藤匠, 藤村茂, 佐藤岳彦, 中嶋智樹, Liu Si-Wei

日本化学療法学会雑誌　71　(4)　505-505　2023/07
Publisher: (公社)日本化学療法学会
ISSN： 1340-7007

eISSN： 1884-5886
Deepening of the Study of Corona Discharges by Recent Advances of Electrical and Optical Measurement Techniques

Seiji Kanazawa, Taiga Mitsui, Akihito Kuno, Takashi Furuki, Kosuke Tachibana, Ryuta Ichiki, Takehiko Sato, Marek Kocik, Jerzy Mizeraczyk

Lecture Notes in Electrical Engineering　112-122　2023/05/31
Publisher: Springer International Publishing
DOI： 10.1007/978-3-031-34526-5_10 　

ISSN： 1876-1100

eISSN： 1876-1119
Effect of Nanosecond Pulsed Currents on Directions of Cell Elongation and Migration through Time-Lapse Analysis International-journal Peer-reviewed

Hayato Tada, Satoshi Uehara, Chia-Hsing Chang, Ken-ichi Yano, Takehiko Sato

International Journal of Molecular Sciences　24　(4)　3826/1-3826/11　2023/02/14
Publisher: MDPI AG
DOI： 10.3390/ijms24043826 　

eISSN： 1422-0067

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It is generally known that cells elongate perpendicularly to an electric field and move in the direction of the field when an electric field is applied. We have shown that irradiation of plasma-simulated nanosecond pulsed currents elongates cells, but the direction of cell elongation and migration has not been elucidated. In this study, a new time-lapse observation device that can apply nanosecond pulsed currents to cells was constructed, and software to analyze cell migration was created to develop a device that can sequentially observe cell behavior. The results showed nanosecond pulsed currents elongate cells but do not affect the direction of elongation and migration. It was also found the behavior of cells changes depending on the conditions of the current application.
Characteristics of high-speed mist generated by condensation of water vapor in pressurized air Peer-reviewed

Yunchen Xiao, Siwei Liu, Tomoki Nakajima, Takehiko Sato

International Journal of Plasma Environmental Science and Technology　16　(3)　e03033/1-e03003/8　2022/11/04
Observation of the Formation of Multiple Shock Waves at the Collapse of Cavitation Bubbles for Improvement of Energy Convergence International-journal International-coauthorship Peer-reviewed

Marc Tinguely, Kiyonobu Ohtani, Mohamed Farhat, Takehiko Sato

Energies　15　(7)　2305-2305　2022/03/22
Publisher: MDPI AG
DOI： 10.3390/en15072305 　

eISSN： 1996-1073

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The collapse of a cavitation bubble is always associated with the radiation of intense shock waves, which are highly relevant in a variety of applications. To radiate a strong shock wave, it is necessary to converge energy at the collapse, and understanding generation processes of multiple shock waves at the collapse is a key issue. In the present study, we investigated the formation of multiple shock waves generated by the collapse of a laser-induced bubble. We used a high-speed imaging system with unprecedented spatiotemporal resolution. We developed a triggering procedure of high precision and reproducibility based on the deflection of a laser beam by the shockwave passage. The high-speed videos clearly show that: (A) a first shockwave is emitted as the micro-jet hits the bottom of the bubble interface, followed by a second shock wave due to the collapse of the remaining toroidal bubble; (B) a sequential collapse of elongated bubbles, where the top part of the bubble collapses slightly before the bottom of the bubble; and (C) the formation of compression shock waves from multiple sites on a toroidal bubble.
Underwater streamers induced by microsecond pulsed discharge with bi-polarities International-coauthorship

Siwei Liu, Yi Liu, Takehiko Sato

1a-5　2022/03
Modeling of Spark Channel of Microsecond Pulsed Discharge in Water International-coauthorship

Siwei Liu, Yi Liu, Takehiko Sato

12th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-12)　O17-4　2021/12
Formation and Measurement of Plasma Fine Bubbles International-coauthorship Invited

Takehiko Sato, Satoshi Uehara, Ryo Kumagai, Takashi Miyahara, Masanobu Oizumi, Tatsuyuki Nakatani, Shiroh Ochiai, Takamichi Miyazaki, Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Marc Tinguely, Mohamed Farhat

12th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-12)　O11-1　2021/12
Automatic measurement of corona discharge characteristics using ramp and triangular voltages International-coauthorship

三井大雅, 輿石昂宏, 古木貴志, 立花孝介, 市來龍大, 金澤誠司, 佐藤岳彦, Jerzy Mizeraczyk

5Da-6　2021/12
Observation of flow field generated by corona discharge using the Schlieren method International-coauthorship

5Da-5　2021/12
プラズマを模擬した電気刺激に対する細胞応答 Invited

張家興, 矢野憲一, 奥村賢直, 佐藤岳彦

S3-3　2021/11
水中プラズマにより生成された微細気泡の残留消滅過程

佐藤岳彦, 熊谷諒, 中嶋智樹

日本機械学会第99期流体工学部門講演会　OS06-09　2021/11
Polarity Effects of Plasma-Induced Stimuli on Cell Viability

Airi Nakayama, Honoka Taguchi, Chia-Hsing Chang, Tomoki Nakajima, Siwei Liu, Takehiko Sato

18th International Conference on Flow Dynamics (ICFD2021) Proceedings　391-392　2021/10
Electrohydrodynamics (EHD): the next generation thermal management technology International-coauthorship

James S. Cotton, Takehiko Sato

The 21st International Symposium on Advanced Fluid Information (AFI-2021)　CRF-82　2021/10
Science of Ultrafine Droplet and High Speed Impact

Takehiko Sato, Masao Watanabe, Takeru Yano, Yuka Iga, Kazumichi Kobayashi, Atsuki Komiya, Hidemasa Takana, Kiyonobu Ohtani, Junnosuke Okajima, Kenichi Funamoto, Yunchen Xiao, Tomoki Nakajima, Siwei Liu

The 21st International Symposium on Advanced Fluid Information (AFI-2021)　CRF-81　2021/10
An Innovative Method of Generating Plasma Microbubbles in Flowing Water International-coauthorship

Mu-Chien Wu, Satoshi Uehara, Tomoki Nakajima, Takehiko Sato, Jong-Shinn Wu

The 21st International Symposium on Advanced Fluid Information (AFI-2021)　CRF-80　2021/10
Pressure Measurement in Laser-Cavitation Bubbles International-coauthorship

Satoshi Uehara, Sayaka Kamata, Tomoki Nakajima, Yuka Iga, Seiji Kanazawa, Mohamed Farhat, Takehiko Sato

The 21st International Symposium on Advanced Fluid Information (AFI-2021)　CRF-79　2021/10
The Effects of Atmospheric-pressure Cold Plasma Generated Electrical Field, Short-life Species, and Long-life Species on Cancer Cells International-coauthorship

Po-Chien Chien, Chao-Yu Chen, Takehiko Sato, Yun-Chien Cheng

The 21st International Symposium on Advanced Fluid Information (AFI-2021)　CRF-70　2021/10
Numerical Simulations of Membrane Deformation Induced by Cold Atmospheric Plasma with Circuit Analysis and Molecular Dynamics

Yuta Iwata, Shota Yamauchi, Yuya Oishi, Ippei Yagi, Satoshi Uchida, Takehiko Sato

The 21st International Symposium on Advanced Fluid Information (AFI-2021)　CRF-21　2021/10
Simulation and experiment analysis of shock wave induced by underwater pulsed discharge International-coauthorship

Siwei Liu, Yi Liu, Yijia Ren, Takehiko Sato

39-40　2021/09
Activation of Ion Channel and Uptake of Extracellular Dye Induced by In-liquid Plasma Treatment

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

8th International Conference on Plasma Medicine (ICPM8)　FrA2-3　2021/08
Compact Atmospheric Plasma Sterilization Device for Contact Lenses Invited

Takehiko Sato, Kazuki Okazaki, Hideto Kamiyama, Koki Oikawa, Kairi Muramatsu, Tomoki Nakajima, Shigeru Fujimura, Toshikatsu Nagasawa, Tatsuyuki Nakatani

8th International Conference on Plasma Medicine (ICPM8)　ThA2-2　2021/08
Investigation of Chemical and Electrical Factors Induced by Double Plasmas on Cancer Cells

Chia-Hsing Chang, Honoka Taguchi, Ken-ichi Yano, Takehiko Sato

8th International Conference on Plasma Medicine (ICPM8)　WeA2-4　2021/08
水蒸気中の不凝縮ガス計測法の開発

佐藤岳彦, 中嶋智樹, 堀内堅斗, 劉思維, 矢野猛

第31回環境工学総合シンポジウム2021講演論文集　306　2021/07
Development of Compact Plasma Sterilization Device for Contact Lenses International-journal Peer-reviewed

Takehiko Sato, Kazuki Okazaki, Tomoki Nakajima, Shigeru Fujimura, Tatsuyuki Nakatani

Plasma Medicine　11　(1)　57-67　2021/06
Publisher: Begell House
DOI： 10.1615/plasmamed.2021037288 　

ISSN： 1947-5764
Influencing Factors on Microsecond-pulsed Discharge Mode in Water

Siwei Liu, Takehiko Sato

5th International Symposium on Application of High-Voltage, Plasma & Micro/Nano (Fine) Bubbles to Agriculture, Aquaculture and Food Safety (ISHPMNB2021)　2021/05
Selective inhibition of melanoma and basal cell carcinoma cells by short-lived species, long-lived species, and electric fields generated from cold plasma International-journal International-coauthorship Peer-reviewed

Po-Chien Chien, Chao-Yu Chen, Yun-Chien Cheng, Takehiko Sato, Rui-Zhe Zhang

Journal of Applied Physics　129　(16)　163302/1-163302/11　2021/04
Publisher: AIP Publishing
DOI： 10.1063/5.0041218 　

ISSN： 0021-8979

eISSN： 1089-7550
Distinct biological actions of electrical and chemical factors of cold atmospheric pressure plasma and their synergistic cytotoxic effects Peer-reviewed

Chia-Hsing Chang, Ken-ichi Yano, Takehiko Sato

International Journal of Plasma Environmental Science and Technology　14　(3)　e03004/1-e03004/9　2020/12
Dissolution enhancement of reactive chemical species by plasma-activated microbubbles jet in water International-journal International-coauthorship Peer-reviewed

Mu-Chien Wu, Satoshi Uehara, Jong-Shinn Wu, YunChen Xiao, Tomoki Nakajima, Takehiko Sato

Journal of Physics D: Applied Physics　53　(48)　485201/1-485201/12　2020/11/25
Publisher: IOP Publishing
DOI： 10.1088/1361-6463/abae96 　

ISSN： 0022-3727

eISSN： 1361-6463
A new measurement method of DC corona-discharge characteristics using repetitive ramp and triangular voltages International-journal International-coauthorship Peer-reviewed

Kosuke Tachibana, Takahiro Koshiishi, Takashi Furuki, Ryuta Ichiki, Seiji Kanazawa, Takehiko Sato, Jerzy Mizeraczyk

Journal of Electrostatics　108　103525/1-103525/8　2020/11
Publisher: Elsevier BV
DOI： 10.1016/j.elstat.2020.103525 　

ISSN： 0304-3886
Characterization of middle-molecule introduction into cells using mm-scale discharge in saline Peer-reviewed

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

Japanese Journal of Applied Physics　59　(4)　040904/1-040904/4　2020/03/30

DOI： 10.35848/1347-4065/ab7d7e 　

ISSN： 0021-4922

eISSN： 1347-4065
Effect of electrical conductivity of water on plasma-driven gas flow by needle-water discharge at atmospheric pressure International-journal Peer-reviewed

Tetsuji Shimizu, Naoya Kishimoto, Takehiko Sato

Journal of Electrostatics　104　103422/1-103422/8　2020/03

DOI： 10.1016/j.elstat.2020.103422 　
Nanosecond pulsed current under plasma-producing conditions induces morphological alterations and stress ﬁber formation in human ﬁbrosarcoma HT-1080 cells International-journal Peer-reviewed

Chia-Hsing Chang, Ken-ichi Yano, Takehiko Sato

Archives of Biochemistry and Biophysics　681　108252/1-108252/8　2020/03

DOI： 10.1016/j.abb.2020.108252 　
Sterilization in liquids by air plasma under intermittent discharge Peer-reviewed

Kairi Muramatsu, Takehiko Sato, Tomoki Nakajima, Toshikatsu Nagasawa, Tatsuyuki Nakatani, Shigeru Fujimura

MECHANICAL ENGINEERING JOURNAL　7　(1)　19-00431/1-19-00431/9　2020

DOI： 10.1299/mej.19-00431 　

ISSN： 2187-9745
Non-contact measurement of electric charges on water surface supplied with plasma International-journal Peer-reviewed

Satoshi Uehara, Akira Sato, Tetsuji Shimizu, Takehiko Sato

Journal of Electrostatics　103　103414/1-103414/6　2020/01

DOI： 10.1016/j.elstat.2019.103414 　
Quantitative evaluation of reactive oxygen and chlorine species generated by discharge in PBS Peer-reviewed

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Takehiko Sato, Toshiro Kaneko

Japanese Journal of Applied Physics　58　(10)　106002/1-106002/6　2019/10

DOI： 10.7567/1347-4065/ab4571 　

ISSN： 0021-4922

eISSN： 1347-4065
Effect of plasma-generator-supplied nanosecond pulsed current on cell response International-journal Peer-reviewed

Chia-Hsing Chang, Ken-ichi Yano, Takamasa Okumura, Takehiko Sato

Journal of Physics D: Applied Physics　52　(18)　185402/1-185402/8　2019/03

DOI： 10.1088/1361-6463/ab0733 　
Removal Mechanism of Artificial Dental Plaque by Impact of Micro-Droplets International-journal Peer-reviewed

Satoshi Uehara, Tomoki Nakajima, Shuichi Moriya, Shigenao Maruyama, Takehiko Sato

ECS Journal of Solid State Science and Technology　8　(2)　N20-N24　2019/03
Formation of Fine Bubbles by Plasma in Water International-coauthorship Invited Peer-reviewed

International Journal of Plasma Environmental Science & Technology　12　(2)　44-48　2019/01

DOI： 10.34343/ijpest.2019.12.02.044 　
Surface potential and charge transfer of needle-water discharge for different applied voltage Invited

Satoshi Uehara, Akira Sato, Takehiko Sato

The 5th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL 2018)　2018/12
Fluid flow analysis of an atmospheric-pressure micro-plasma ejected from a narrow nozzle

H. Yoshiki, K. Otosaka, T. Sato, T. Nakajima, S. Uehara

Proceedings of the 18th International Symposium on Advanced Fluid Information (AFI-2018)　2018/11
Directional control of micro-jets from cavitation bubbles subject to multiple pressure waves

T. Akimura, T. Minami, O. Supponen, T. Nakajima, S. Uehara, K. Ohtani, T. Kaneko, M. Farhat, T. Sato

Proceedings of the 18th International Symposium on Advanced Fluid Information (AFI-2018)　2018/11
Jetting from cavitation bubbles due to multiple shockwaves Peer-reviewed

Outi Supponen, Takahito Akimura, Tomoya Minami, Tomoki Nakajima, Satoshi Uehara, Kiyonobu Ohtani, Toshiro Kaneko, Mohamed Farhat, Takehiko Sato

Applied Physics Letters　113　(19)　193703-1-193703-4　2018/11

DOI： 10.1063/1.5060645 　
Propagation and Branching Process of Negative Streamers in Water Peer-reviewed

Ryo Kumagai, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

Journal of Applied Physics　124　(16)　163301-1-163301-7　2018/10

DOI： 10.1063/1.5025376 　
針-水面放電に伴う水中電荷移動計測

上原聡司, 佐藤旭, 清水鉄司, 佐藤岳彦

2018年度第42回静電気学会全国大会講演論文集　2018/09
Plasma generated in culture medium induces damages of HeLa cells due to flow phenomena Peer-reviewed

Yusuke Sato, Takehiko Sato, Daisuke Yoshino

Journal of Physics D: Applied Physics　51　(12)　125402-1-125402-7　2018/03/05
Publisher: Institute of Physics Publishing
DOI： 10.1088/1361-6463/aab058 　

ISSN： 1361-6463 0022-3727
Effect of minute amount of nitrogen oxides on inactivation of spores in oxygen plasma Peer-reviewed

OIKAWA Koki, SATO Takehiko, NAKAJIMA Tomoki, NAGASAWA Toshikatsu, FUJIMURA Shigeru, NAKATANI Tatsuyuki

The Proceedings of the Symposium on Environmental Engineering　2018　(0)　324-324　2018
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/jsmeenv.2018.28.324 　

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We have developed a dielectric barrier discharge (DBD) using high purity oxygen gas, which is capable of highly concentrated ozone. Minute nitrogen oxides gas can be controlled by mixing a small amount of nitrogen gas. The applied voltage was ±1.4 kV, and the frequency was 40 kHz. The bacteria spores were sterilized in 7 min for the case of high purity oxygen gas, and 12 min for the case of including N₂=5,000 ppm in gas phase. Also sterilized in 25 min in each gas case in water phase. Although ozone reached around 6 mg/L in 25 min each gas case, the more nitrogen ratio increased, the more nitrate acid and nitrite acid increased in water phase. Compared those results, nitrogen oxides are not essential for this plasma sterilization system.
Performance evaluation of the plasma discharge electrode using for the plasma sterilization equipment Peer-reviewed

MURAMATSU Kairi, SATO Takehiko, NAKAJIMA Tomoki, NAGASAWA Toshikatsu, FUJIMURA Shigeru, NAKATANI Tatsuyuki

The Proceedings of Mechanical Engineering Congress, Japan　2018　(0)　S0520105　2018
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/jsmemecj.2018.S0520105 　
Mechanism of Propagation of Underwater Negative Streamer

Ryo Kumagai, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

Proceedings of the 18th International Symposium on Advanced Fluid Information (AFI-2018)　CRF-69　2018
Development of Plasma Sterilization Device for Contact Lens Peer-reviewed

42　(1)　27-33　2018/01
Publisher:
ISSN： 0386-2550
Electric potential developed by single-pulse needle-water discharge Peer-reviewed

Takamasa Okumura, Chaoyi Zhou, Eijiro Kubo, Tetsuji Shimizu, Tomoki Nakajima, Takehiko Sato

APPLIED PHYSICS EXPRESS　11　(1)　016201-1-016201-4　2018/01

DOI： 10.7567/APEX.11.016201 　

ISSN： 1882-0778

eISSN： 1882-0786
Visualization of Pressure Field of Negative Discharge in Water

Ryo Kumagai, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

Proceedings of the Seventeenth International Symposium on Advanced Fluid Information (AFI2017)　CRF-3　2017/11/01
Propagation analysis of negative streamer channel in water

Ryo Kumagai, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

Proceedings of 23rd International Symposium on Plasma Chemistry (ISPC-23)　2017/07/30
Visualization of inception, propagation and collapse process of underwater positive streamer Peer-reviewed

Takehiko Sato, Ryo Kumagai, Tomoyuki Nakajima, Kiyonobu Ohtani, Atsuki Komiya, Seiji Kanazawa, Toshiro Kaneko

Proceedings of the 31st International Symposium on Shock Waves (ISSW31)　2017/07/09
In silico Evaluation of Impurities Found in Some Generic Drugs of Piperacillin/ Tazobactam

Fujimura S, Sato T, Watanabe A

Journal of Antimicrobial Agents　03　(02)　2017
Publisher: OMICS Publishing Group
DOI： 10.4172/2472-1212.1000138 　

eISSN： 2472-1212
外部空気流付加による水ジェットの微粒化とデンタルプラーク洗浄への応用に関する研究

守谷修一, 伊賀由佳, 佐々木裕章, 佐藤岳彦, 圓山重直

混相流シンポジウム2017, 電気通信大学, 東京(2017.8.19-21(20)), No. E222　2017
Investigation of the influence of discharge inside plasma-induced bubble

KAMATA Sayaka, SUPPONEN Outi, KANAZAWA Seiji, IGA Yuka, NAKAJIMA Tomoki, FARHAT Mohamed, SATO Takehiko

The Proceedings of Conference of Tohoku Branch　2017　(0)　2017
Publisher: 一般社団法人日本機械学会
Highly Temporal Visualization of Propagation Process of Underwater Negative Streamer

Ryo Kumagai, Seiji Kanazawa, Atsuki Komiya, Kiyonobu Ohtani, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

Proceedings of the 3rd Taiwan-Japan Workshop on Plasma Life Science and Technology (2016TJPL)　PO-02　2016/12/15
Characteristics of plasma in culture medium generated by positive pulse voltage and effects of organic compounds on its characteristics Peer-reviewed

Y. Sato, T. Sato, D. Yoshino

PLASMA SOURCES SCIENCE & TECHNOLOGY　25　(6)　2016/12

DOI： 10.1088/0963-0252/25/6/065023 　

ISSN： 0963-0252

eISSN： 1361-6595
Charge-up on Water Surface by Cold Atmospheric Plasma for Sanitization Device

T. Shimizu, G. E. Morfill, C. Zhou, T. Sato

Proceedings of the 16th International Symposium on Advanced Fluid Information　6-7　2016/10/11
Development of Bubble Measurement Method by Plasma-generated Shockwave

T. Sato, Y. Nagasawa, T. Nakajima, K. Ohtani, T. Miyahara, T. Nakatani

Proceedings of the 16th International Symposium on Advanced Fluid Information　2-3　2016/10/11
Propagation Mechanism of Negative Streamer Discharge in Water

R. Kumagai, S. Kanazawa, K. Ohtani, A. Komiya, T. Kaneko, T. Nakajima, T. Sato

Proceedings of the 16th International Symposium on Advanced Fluid Information　4-5　2016/10/11
アカントアメーバによるコンタクトレンズ汚染モデルに対するプラズマ殺菌の基礎的検討

藤村茂, 河村真人, 古川恵美子, 中野禎久, 渡辺彰, 佐藤岳彦, 中野友美

日本化学療法学会雑誌　64　(Suppl.A)　163-163　2016/05
Publisher: (公社)日本化学療法学会
ISSN： 1340-7007

eISSN： 1884-5886
Gas Flow Formation by Plasma Discharge on Water Surface Peer-reviewed

T. Shimizu, M. Hara, N. Kishimoto, D. Yoshino, G. E. Morfill, T. Sato

International Journal of Plasma Environmental Science and Technology　10　(1)　83-87　2016/03
Role of Continuous Discharge Current for Secondary Streamer in Water Peer-reviewed

H. Fujita, S. Kanazawa, K. Ohtani, A. Komiya, T. Kaneko, T. Sato

International Journal of Plasma Environmental Science and Technology　10　(1)　16-19　2016/03
Agricultural and Fisheries Applications Using Pulsed Power and Plasmas Peer-reviewed

内野敏剛, 高木浩一, 内田諭, 勝木淳, 佐藤岳彦, 小田昭紀, 門脇一則, 猪原哲, 林信哉, 王斗艶, 西村亮, 大嶋孝之, 小出章二, 太田貴之, 須貝太一, 今田剛, 河野晋, 清水一男, 南谷靖史, 嶽本あゆみ, 高橋克幸, 山内四郎, 蛯原健治, 池上知顯, 光木文秋, 山下義隆, 徳地明, アマヌーラ・カン・ユスフ・ザイ, 永井公好, 清水尚博

電気学会技術報告　(1350)　75P　2015/11/20

ISSN： 0919-9195
Development of Bubble Generation Method by Plasma

T. Sato, Y. Nagasawa, K. Ohtani, T. Miyahara, T. Nakatani

Proceedings of the 15th International Symposium on Advanced Fluid Information (AFI-2015)　104-105　2015/10/28
Development of Small Sterilization Device using Low Temperature Plasma Flow for Inactivation of Pathogens

K. Okazaki, T. Sato, H. Oshitani, M. Okamoto, T. Nakajima, S. Fujimura

Proceedings of the 15th International Symposium on Advanced Fluid Information (AFI-2015)　80-81　2015/10/28
Effect of Electric Fields on the Inception of Primary and Secondary Streamers in Water

H. Fujita, S. Kanazawa, K. Ohtani, A. Komiya, T. Kaneko, T. Sato

Proceedings of the 15th International Symposium on Advanced Fluid Information (AFI-2015)　102-103　2015/10/28
Generation and Transport of Chemical Species in Low-temperature Atmospheric Plasma for Sanitization Device

T. Shimizu, G. E. Morfill, N. Kishimoto, H. Kamiyama, T. Sato

Proceedings of the 15th International Symposium on Advanced Fluid Information (AFI-2015)　78-79　2015/10/28
Microjet Formation Mechanism in a Cavitation Process

T. Minami, T. Sato, K. Ohtani, T. Nakajima, T. Kaneko, Mohamed Farhat

Proceedings of the 15th International Symposium on Advanced Fluid Information (AFI-2015)　140-141　2015/10/28
Development of Low-Temperature Sterilization Device Using Atmospheric Pressure Air Plasma with Circulating Flow

D. Yoshino, K. Nakamuraya, T. Nakajima, T. Sato

Mechanical Engineering Journal　2　(5)　15-00187-15-00187　2015/10
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/mej.15-00187 　

ISSN： 2187-9745

More details Close

Medical instruments are generally sterilized using high-pressure steam, ethylene oxide gas, gamma radiation, or electron beams. However, such conventional methods entail many shortcomings such as limitations of applicable materials, high temperature, long time, and high operating costs. Therefore, development of a safe, low-temperature, rapid, and inexpensive sterilization method has been anticipated. This study developed and assessed a plasma sterilization device that can generate effective chemical species necessary for sterilization. Its sterilization effectiveness was verified using biological indicators of Geobacillus stearothermophilus and Bacillus atrophaeus spores. The G. stearothermophilus and B. atrophaeus were sterilized, respectively, in 25 and 35 min with 5,400 ppm and in 35 min with 7,600 ppm of plasma-generated NO_x, respectively, at around 25 °C. The main factor in sterilization of spores using the plasma was also assessed. In the conditions of atmospheric pressure air plasma, nitrogen oxide such as NO and NO₂ were mainly generated. Morphological observations of spores exposed to the plasma and NO₂ using scanning electron microscopy confirmed that nitrogen oxide perforated the spore coats. That spore coat perforation caused by nitrogen oxide is expected to be a main factor in sterilization. To remove the toxic gases used for sterilization, two types of methods were introduced into the developed devices. Bubbling in water could be reduced the concentration of residual NO_x in the reaction chamber after sterilization to less than 50 ppm, but it remained higher than the limitation of environmental regulations. On the other hand, using the surface discharge system, we were able to reduce the residual NO_x to less than 0.04 ppm, which is the limit of environmental regulations. This study presents the important techniques to improve infection prevention and public health.
Sterilization Method Using Plasma Discharge Against Biofilm-Producing Pseudomonas aeruginosa on Surface of Contact Lens Peer-reviewed

Yoshihisa Nakano, Shigeru Fujimura, Takehiko Sato, Toshiaki Kikuchi, Masakazu Ichinose, Akira Watanabe

JOURNAL OF MEDICAL AND BIOLOGICAL ENGINEERING　35　(5)　626-633　2015/10

DOI： 10.1007/s40846-015-0080-1 　

ISSN： 1609-0985

eISSN： 2199-4757
水中正ストリーマの進展開始電圧に及ぼす放電パラメータの影響 Peer-reviewed

藤田英理, 金澤誠司, 大谷清伸, 小宮敦樹, 金子俊郎, 佐藤岳彦

静電気学会誌　39　(1)　21-26　2015/01/31
Publisher:
ISSN： 0386-2550
Localized Macromolecule Transfer through Cell Membrane by Micro Plasma in High-Conductivity Liquid

Tohoku-Section Joint Convention Record of Institutes of Electrical and Information Engineers, Japan　2015　19-19　2015
Publisher: Organizing Committee of Tohoku-Section Joint Convention of Institutes of Electrical and Information Engineers, Japan
DOI： 10.11528/tsjc.2015.0_19 　
Study on Formation of Plasma Nanobubbles in Water

Takehiko Sato, Tatsuyuki Nakatani, Takashi Miyahara, Shiroh Ochiai, Masanobu Oizumi, Hidemasa Fujita, Takamichi Miyazaki

9TH INTERNATIONAL SYMPOSIUM ON CAVITATION (CAV2015)　656　2015

DOI： 10.1088/1742-6596/656/1/012036 　

ISSN： 1742-6588
Generation process and sterilization effect of OH radical in a steam plasma flow at atmospheric pressure for a plasma autoclave Peer-reviewed

Takehiko Sato, Takeshi Furui

Plasma Medicine　5　(2-4)　299-314　2015
Publisher: Begell House Inc.
DOI： 10.1615/PlasmaMed.2016015737 　

ISSN： 1947-5772 1947-5764
Initiation process and propagation mechanism of positive streamer discharge in water Peer-reviewed

Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Takehiko Sato

JOURNAL OF APPLIED PHYSICS　116　(21)　2014/12

DOI： 10.1063/1.4902862 　

ISSN： 0021-8979

eISSN： 1089-7550
Characteristics of a Plasma-induced Flow using a Mesh Electrode for Viral Inactivation

Yuji Kudo, Michiko Okamoto, Takehiko Sato, Daisuke Yoshino, Akira Suzuki, Hitoshi Oshitani

Proceedings of the 14th International Symposium on Advanced Fluid Information (AFI2014)　106-107　2014/10/09
Development of New Visualization Method for Plasma-Generated Nano-Micro Bubbles

Takehiko Sato, Yuki Yamaguchi, Kiyonobu Ohtani, Takashi Miyahara, Tatsuyuki Nakatani

Proceedings of the 14th International Symposium on Advanced Fluid Information (AFI2014)　186-187　2014/10/09
Formation of Microjet by Plasma Generated Underwater Shock Wave

Tomoya Minami, Takehiko Sato, Tomoki Nakajima, Daisuke Yoshino, Toshiro Kaneko

Proceedings of the 11th International Conference on Flow Dynamics (ICFD2014)　552-553　2014/10/09
Generation and Transport of Chemical Species in Low-Temperature Atmospheric Plasma for Sanitization Device

Tetsuji Shimizu, Masashi Hara, Gregor E. Morfill, Daisuke Yoshino, Takehiko Sato

Proceedings of the 14th International Symposium on Advanced Fluid Information (AFI2014)　96-97　2014/10/09
Plasma Characterisitics of Discharge in a Culture Medium

Yusuke Sato, Tomoki Nakajima, Takehiko Sato, Daisuke Yoshino

Proceedings of the 11th International Conference on Flow Dynamics (ICFD2014)　536-537　2014/10/09
Propagation Processes of Primary and Secondary Streamers by Pulsed Discharge in Water

Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Takehiko Sato

Proceedings of the 14th International Symposium on Advanced Fluid Information (AFI2014)　126-127　2014/10/09
Sterilization Mechanism of Plasma Discharge against Biofilm-producing Pseudomonas aeruginosa on Contact Lenses

Yoshihisa Nakano, Shigeru Fujimura, Takehiko Sato, Daisuke Yoshino, Akira Watanabe

Proceedings of the 14th International Symposium on Advanced Fluid Information (AFI2014)　88-89　2014/10/09
Visualization of the Formation of Shock Waves at the Collapse of a Laser-induced Bubble

Marc Tinguely, Takehiko Sato, Kiyonobu Ohtani, Mohamed Farhat

Proceedings of the 14th International Symposium on Advanced Fluid Information (AFI2014)　108-109　2014/10/09
Effects of a Cold Plasma Flow on HeLa Cells Viability

Kazuki Okazaki, Takehiko Sato, Daisuke Yoshino

Proceedings of the 11th International Conference on Flow Dynamics (ICFD2014)　454-455　2014/10/08
Highly Temporal Visualization of Generation Process of Underwater Secondary Streamer From Developed Primary Streamer Peer-reviewed

Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Takehiko Sato

IEEE TRANSACTIONS ON PLASMA SCIENCE　42　(10)　2398-2399　2014/10

DOI： 10.1109/TPS.2014.2325937 　

ISSN： 0093-3813

eISSN： 1939-9375
Gene expression responses of HeLa cells to chemical species generated by an atmospheric plasma flow Peer-reviewed

Mayo Yokoyama, Kohei Johkura, Takehiko Sato

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS　450　(4)　1266-1271　2014/08

DOI： 10.1016/j.bbrc.2014.06.116 　

ISSN： 0006-291X

eISSN： 1090-2104
Effect of voltage polarity on oxidation-reduction potential by plasma in water Peer-reviewed

Takashi Miyahara, Masanobu Oizumi, Tatsuyuki Nakatani, Takehiko Sato

AIP ADVANCES　4　(4)　2014/04

DOI： 10.1063/1.4871475 　

ISSN： 2158-3226

eISSN： 2158-3226
Investigation of main sterilization factor of bacterial spores by atmospheric pressure air plasma

Kazuhiro Nakamuraya, Daisuke Yoshino, Tomoki Nakajima, Takehiko Sato

Proceedings of the 6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma 2014)　2014/03/04
Preface

SATO Takehiko, HATTORI Yuji, NIIMI Tomohide, TAKANA Hidemasa, TOKUMASU Takashi

JFST　9　(5)　JFST0067-JFST0067　2014
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/jfst.2014jfst0067 　

ISSN： 1880-5558
Fast propagation of an underwater secondary streamer by the appearance of a continuous component in the discharge current Peer-reviewed

H. Fujita, S. Kanazawa, K. Ohtani, A. Komiya, T. Kaneko, T. Sato

EPL　105　(1)　2014/01

DOI： 10.1209/0295-5075/105/15003 　

ISSN： 0295-5075

eISSN： 1286-4854
Driving mechanism of plasma-induced gas flow between needle electrode and water surface

Takehiko Sato, Tetsuji Shimizu, Naoya Kishimoto, Gregor Morfill

8th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-8)　2013/12/22
Observation of Underwater Discharge Phenomena Using a Laser Schlieren Technique

Yasuhiro Mihara, Shuichi Akamine, Ryuta Ichiki, Takehiko Sato, Seiji Kanazawa

8th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology　2013/12
Sterilization of Bacterial Spores by Atmospheric Pressure Plasma

Kazuhiro Nakamuraya, Daisuke Yoshino, Tomoki Nakajima, Takehiko Sato

Proceedings of the 10th International Conference on Flow Dynamics　584-585　2013/11/27
Analysis of Plasma-generated Bubbles by Electron Microscope

Takehiko Sato, Takashi Miyahara, Tatsuyuki Nakatani

Proceedings of the 13th International Symposium on Advanced Fluid Information (AFI 2013)　148-149　2013/11/26
Bactericidal Effect of Plasma Discharge against Biofilm-producing Pseudomonas aeruginosa on Contact Lenses

Yoshihisa Nakano, Shigeru Fujimura, Takehiko Sato, Daisuke Yoshino

Proceedings of the 13th International Symposium on Advanced Fluid Information (AFI 2013)　64-65　2013/11/26
Characteristics of Non-equilibrium Plasma Flow for Viral Inactivation

Yuji Kudo, Michiko Okamoto, Daisuke Yoshino, Takehiko Sato, Akira Suzuki, Hitoshi Oshitani

Proceedings of the 13th International Symposium on Advanced Fluid Information (AFI 2013)　66-67　2013/11/26
Flow Formation in Atmospheric Plasma Discharge between Pin Electrode and Water Surface

Tetsuji Shimizu, Gregor E. Morfill, Naoya Kishimoto, Masashi Hara, Daisuke Yoshino, Takehiko Sato

Proceedings of the 13th International Symposium on Advanced Fluid Information (AFI 2013)　70-71　2013/11/26
On Hydrogen Generation by the Collapse of Cavitation Bubbles

Takehiko Sato, Marc Tinguely, Masanobu Oizumi, Mohamed Farhat

Proceedings of the 13th International Symposium on Advanced Fluid Information (AFI 2013)　146-147　2013/11/26
Visualized Propagation Process of Positive Primary Streamers in Water

Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Takehiko Sato

Proceedings of the 13th International Symposium on Advanced Fluid Information (AFI 2013)　110-111　2013/11/26
Characteristics of Chemical Species Generated by a Gas-Liquid Plasma Flow Using a Wire Electrode

Masashi Hara, Daisuke Yoshino, Tetsuji Shimizu, Takehiko Sato

Proceedings of the 10th International Conference on Flow Dynamics　642-643　2013/11/25
Effects of Hydrostatic Pressure on Cell Cycle Progression and Morphology of Endothelial Cells

Kakeru Sato, Daisuke Yoshino, Takehiko Sato

Proceedings of the 10th International Conference on Flow Dynamics　620-621　2013/11/25
Frontier Science of Next Generation Reactive Fluid

Jun Ishimoto, Kaoru Maruta, Takehiko Sato

Proceedings of the Tenth International Conference on Flow Dynamics (ICFD2013), Nov. 25-27, 2013, Sendai International Center, Sendai, Japan.　2013/11
Characterisation of pulsed discharge in water Peer-reviewed

Marek Kocik, Miroslaw Dors, Janusz Podlinski, Jerzy Mizeraczyk, Seiji Kanazawa, Ryuta Ichiki, Takehiko Sato

EPJ Applied Physics　64　(1)　2013/10

DOI： 10.1051/epjap/2013120426 　

ISSN： 1286-0042 1286-0050
Plasma Sterilization Device using Circulating Air Flow under Atmospheric Pressure

Daisuke Yoshino, Kazuhiro Nakamuraya, Tomoki Nakajima, Takehiko Sato

Proceedings of the 2013 JSAP-MRS Joint Symposia (Symposium O)　2013/09/16
Role of pulsed repetitive current for positive primary streamers in water

Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Takehiko Sato

Proceedings of the 21st International Symposium on Plasma Chemistry　2013/08/09
Gene ontology analysis for HeLa cells exposed to a plasma- or H2O2-treated culture medium

Takehiko Sato, Mayo Yokoyama, Kohei Johkura

Proceedings of the 21st International Symposium on Plasma Chemistry　2013/08/06
Spatiotemporal analysis of propagation mechanism of positive primary streamer in water Peer-reviewed

Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Takehiko Sato

JOURNAL OF APPLIED PHYSICS　113　(11)　2013/03

DOI： 10.1063/1.4795765 　

ISSN： 0021-8979
Evidence for hydrogen generation in laser- or spark-induced cavitation bubbles Peer-reviewed

Takehiko Sato, Marc Tinguely, Masanobu Oizumi, Mohamed Farhat

APPLIED PHYSICS LETTERS　102　(7)　2013/02

DOI： 10.1063/1.4793193 　

ISSN： 0003-6951
Sterilization device using air plasma under reduced-pressure environment

Daisuke Yoshino, Kazuhiro Nakamuraya, Tomoki Nakajima, Takehiko Sato

5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials　206-206　2013/01/31
Propagation Process of Streamer Discharge in Water

Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Takehiko Sato

Proceedings of the Ninth International Conference on Flow Dynamics　166-167　2012/09/21
Anti-bacterial Effect of a Plasma Irradiation against Biofilm-producing Pseudomonas aeruginosa and Acinetobacter baumannii

Yoshihisa Nakano, Shigeru Fujimura, Takehiko Sato

Proceedings of the Twelfth International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration　94-95　2012/09/20
Formation of Thermal Flow Field in Shallow Water Cell by Plasma Flow

Naoya Kishimoto, Tetsuji Shimizu, Gregor E. Morfill, Takehiko Sato

Proceedings of the Twelfth International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration　96-97　2012/09/20
Development of Observation Method for Plasma-generated Bubbles

Takehiko Sato, Takashi Miyahara, Tatsuyuki Nakatani

Proceedings of the Twelfth International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration　76-77　2012/09/20
Development of Visualization Methods of Streamers in Water

Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Takehiko Sato

Proceedings of the Twelfth International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration　142-143　2012/09/20
Comprehensive Gene Expression Analysis of HeLa Cells in Response to Plasma Stimuli Invited

Mayo Yokoyama, Takehiko Sato, Kohei Johkura

Proceedings of the Ninth International Conference on Flow Dynamics　748-749　2012/09/20
Effect of Cavitation Generation on Dissolved Oxygen Concentration in the Cavitation Tunnel Downstream

Naoya Kishimoto, Takehiko Sato, Marc Tinguely, Matthieu Dreyer, Mohamed Farhat

Proceedings of the Twelfth International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration　140-141　2012/09/20
Gene Expression Analysis Using a Microarray for Hela Cells Exposed to a Plasma Flow

Takehiko Sato, Mayo Yokoyama, Kohei Johkura

Abstract Book - 9th International Bioelectrics Symposium (BIOELECTRICS 2012)　2012/09/07
Development of New Sterilization Device by a Plasma Flow Invited

Takehiko Sato

2012 Bilateral Workshop on Green Technology and Life Science between Chang Gung University and Tohoku University　22-23　2012/05/15
Acinetobactor baumanniiとPseudomonas aeruginosaに対する超音波法とプラズマ照射法の殺菌効果

中野禎久, 藤村茂, 布施克浩, 高根秀成, 渡辺彰, 佐藤岳彦

感染症学雑誌　86　(2)　238-238　2012/03
Publisher: (一社)日本感染症学会
ISSN： 0387-5911
Observation of Liquid-Gas Phase Dynamics from Pre-breakdown to Post-discharge in a Single-shot Underwater Pulsed Discharge Peer-reviewed

Seiji Kanazawa, Yuki Ichihashi, Satoshi Watanabe, Shuichi Akamine, Ryuta Ichiki, Toshikazu Ohkubo, Takehiko Sato, Marek Kocik, Jerzy Mizeraczyk

International Journal of Plasma Environmental Science & Technology　6　(1)　49-53　2012/03
Flow formation and chemical species transport in a pin-water surface atmospheric plasma

Tetsuji Shimizu, Yutaka Iwafuchi, Gregor E. Morfill, Takehiko Sato

The 8th EU-Japan Joint Symposium on Plasma Processing (JSPP2012) Book of Abstracts　O05/1-O05/2　2012/01/16
Plasma Induced Flow and Chemical Transport in a Plasma-Water System

Tetsuji Shimizu, Yutaka Iwafuchi, Gregor E. Morfill, Takehiko Sato

Abstracts - 21st Academic Symposium of MRS-Japan 2011　2011/12/19
Effect of Chemical Species Generated by a Plasma Flow on Inactivation of HeLa Cell Viability Invited

Takehiko Sato, Mayo Yokoyama, Kohei Johkura

Proceedings of the 8th International Conference on Flow Dynamics　690-691　2011/11/11
Analysis of Plasma Flow at Gas-Liquid Interface for Biological Interaction

Naoya Kishimoto, Tetsuji Shimizu, Gregor E. Morfill, Takehiko Sato

Proceedings of the 11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　68-69　2011/11/10
Anti-bacterial Effect of a Dielectric Barrier Discharge Plasma against Biofilm-producing Gram Negative Bacilli

Yoshihisa Nakano, Shigeru Fujimura, Takehiko Sato

Proceedings of the 11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　70-71　2011/11/10
Effect of Neighboring Solid Wall on Generation of Residual Microbubbles after Collapse of Laser-Induced Bubble

Takehiko Sato, Marc Tinguely, Masanobu Oizumi, Mohamed Farhat

Proceedings of the 11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　64-65　2011/11/10
Observation of Bubble Formation and Collapse Process by Generating a Plasma

Takehiko Sato, Takashi Miyahara, Tatsuyuki Nakatani

Proceedings of the 11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　66-67　2011/11/10
Streamer Propagation Mechanism in Water

Hidemasa Fujita, Seiji Kanazawa, Takehiko Sato

Proceedings of the 11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　60-61　2011/11/10
Observation of Liquid-Gas Phase Dynamics from Pre-breakdown to Post-discharge in a Single-shot Underwater Pulsed Discharge

Seiji Kanazawa, Yuki Ichihashi, Satoshi Watanabe, Shuichi Akamine, Ryuta Ichiki, Toshikazu Ohkubo, Takehiko Sato, Marek Kocik, Jerzy Mizeraczyk

Proceedings of the 2nd ISNPEDADM-2011 (New electrical technologies for environment)　2011/11
A key inactivation factor of HeLa cell viability by a plasma flow Peer-reviewed

Takehiko Sato, Mayo Yokoyama, Kohei Johkura

JOURNAL OF PHYSICS D-APPLIED PHYSICS　44　(37)　372001/1-372001/5　2011/09

DOI： 10.1088/0022-3727/44/37/372001 　

ISSN： 0022-3727
Inactivation process of HeLa cell by exposure to a plasma-treated medium

Takehiko Sato, Mayo Yokoyama, Kohei Johkura

Proceedings of the 20th International Symposium on Plasma Chemistry (ISPC-20)　2011/07/25
Formation of thermal flow fields and chemical transport in air and water by atmospheric plasma Peer-reviewed

Tetsuji Shimizu, Yutaka Iwafuchi, Gregor E. Morfill, Takehiko Sato

NEW JOURNAL OF PHYSICS　13　(5)　053025/1-053025/10　2011/05

DOI： 10.1088/1367-2630/13/5/053025 　

ISSN： 1367-2630
Transport Mechanism of Chemical Species in a Pin-water Atmospheric Discharge driven by Negative Voltage Invited Peer-reviewed

Tetsuji Shimizu, Yutaka Iwafuchi, Gregor E. Morfill, Takehiko Sato

JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY　24　(4)　421-427　2011

DOI： 10.2494/photopolymer.24.421 　

ISSN： 0914-9244
Plasma Sterilization by Generation and Transport of Reactive Chemical Species Invited

Takehiko Sato

Abstracts CD of the 20th Academic Symposium of MRS-Japan 2010　7　2010/12
Analysis of Chemical Species Transport in a Air-Water Plasma Flow

Yutaka Iwafuchi, Tetsuji Shimizu, Gregor E. Morfill, Takehiko Sato

Proceedings of the 7th International Conference on Flow Dynamics　554-555　2010/11
Water Quality Change Induced by Plasma Formation in Water

Takashi Miyahara, Takehiko Sato, Masanobu Oizumi, Tatsuyuki Nakatani

Proceedings of the 10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2010)　88-89　2010/11
Development of Next-Generation Plasma Autoclave

Takehiko Sato, Takeshi Furui, Kei Igarashi

Proceedings of the 10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2010)　90-91　2010/11
Analysis of Plasma Flow at Gas-Liquid Interface for Biological Interaction

Tetsuji Shimizu, Yutaka Iwafuchi, Gregor E. Morfill, Takehiko Sato

Proceedings of the 10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2010)　92-93　2010/11
Residual Microbubbles after Collapse of Discharge-Induced or Laser-Induced Bubbles in Water

Marc Tinguely, Masanobu Oizumi, Takehiko Sato, Mohamed Farhad

Proceedings of the 10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2010)　120-121　2010/11
Observation of Streamer and Bubble Generation by Plasma

Takehiko Sato, Masanobu Oizumi, Takashi Miyahara, Tatsuyuki Nakatani

Proceedings of the 10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2010)　150-151　2010/11
大気圧水蒸気プラズマ流の化学種生成過程と滅菌機構

佐藤岳彦, 古居剛

日本機械学会第88期流体工学部門講演会講演論文集　(10-16)　595-596　2010/10
大気圧プラズマ流による機能性化学種の生成輸送機構と滅菌機構 Invited

佐藤岳彦

日本機械学会2010年度年次大会講演資料集(9)　2010　(10-1)　149-150　2010/09
Publisher:
DOI： 10.1299/jsmemecjsm.2010.9.0_149 　
大気圧プラズマ流のHeLa細胞への影響

佐藤岳彦, 横山茉代, 城倉浩平

第34回静電気学会全国大会講演論文集　151-152　2010/09
Effect of Culture Medium Exposed to a Plasma Flow on Activity of HeLa Cells

Takehiko Sato, Mayo Yokoyama, Kohei Johkura

Book of Abstracts of 3rd International Conference on Plasma Medicine (ICPM 3)　29　2010/09
水中の放電現象による水質への影響

佐藤岳彦, 大泉雅伸, 宮原高志, 中谷達行

日本機械学会第20回環境工学総合シンポジウム2010講演論文集　(10-15)　197-198　2010/06
Characteristics of a Plasma Flow Generated in Pure Water Vapor at Atmospheric Pressure and Its Sterilization Efficacy

Takehiko Sato, Takeshi Furui

Proceedings of International Workshop on Plasmas with Liquids (IWPL 2010)　47　2010/03
水面近傍に形成した大気圧プラズマ流の気液流動場解析

岩渕豊, 清水鉄司, Gregor E. Morfill, 佐藤岳彦

日本機械学会東北支部第45期総会・講演会講演論文集　(2010-1)　230-231　2010/03
Characterization of Low-Temperature Microwave Plasma Treatment With and Without UV Light for Disinfection Peer-reviewed

Tetsuji Shimizu, Tetyana Nosenko, Gregor Eugen Morfill, Takehiko Sato, Hans-Ulrich Schmidt, Takuya Urayama

PLASMA PROCESSES AND POLYMERS　7　(3-4)　288-293　2010/03

DOI： 10.1002/ppap.200900085 　

ISSN： 1612-8850
マイクロ波大気圧プラズマシステムの医療応用

浦山卓也, 藤井修逸, 佐藤岳彦, 清水鉄司, R. Pompl, B. Steffes, G. E. Morfil

日本機械学会環境工学部門大気圧プラズマ流による人間環境保全技術に関する研究分科会成果報告書　191-193　2009/12
大気圧プラズマ流による滅菌機構および医療分野への展開

佐藤岳彦, 宮原高志, 浦山卓也, 中谷達行

日本機械学会環境工学部門大気圧プラズマ流による人間環境保全技術に関する研究分科会成果報告書　202-206　2009/12
大気圧プラズマ流と水の干渉機構

宮原高志, 佐藤岳彦

日本機械学会環境工学部門大気圧プラズマ流による人間環境保全技術に関する研究分科会成果報告書　223-226　2009/12
Study of the 3D plasma cluster environment by emission spectroscopy Peer-reviewed

T. Antonova, B. M. Annaratone, J. E. Allen, T. Sato, H. M. Thomas, G. E. Morfill

NEW JOURNAL OF PHYSICS　11　(11)　113023　2009/11

DOI： 10.1088/1367-2630/11/11/113023 　

ISSN： 1367-2630
Mechanism of Radical Generation and Sterilization by a Plasma Flow at Atmospheric Pressure

Takashi Miyahara, Shiro Ochiai, Takehiko Sato

Proceedings of 9th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2009)　60-61　2009/11
Analysis of Reactive Species in a Plasma Flow for Medical Treatment

Tetsuji Shimizu, Takehiko Sato, Gregor E. Morfill

Proceedings of the 9th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2009)　66-67　2009/11
Mechanism of Bubble Generation and Disappearance by Plasma

Takehiko Sato, Masanobu Oizumi, M. Tinguely, Mohamed Farhat

Proceedings of the 9th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2009)　90-91　2009/11
Production of Complex Plasma at Atmospheric Pressure

Takehiko Sato, Yutaka Iwafuchi, Tetsuji Shimizu, Gregor E. Morfill

Proceedings of the 9th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2009)　92-93　2009/11
Development of Bubble Generation Method by Plasma

Takehiko Sato, Masanobu Oizumi, Takashi Miyahara, Tatsuyuki Nakatani

Proceedings of the 9th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2009)　102-103　2009/11
大気圧アルゴンプラズマ流と水の干渉機構

佐藤岳彦, 落合史朗, 宮原高志

日本機械学会熱工学コンファレンス2009講演論文集　(09-33)　101-102　2009/11
Generation and transport mechanisms of chemical species by a post-discharge flow for inactivation of bacteria Peer-reviewed

Takehiko Sato, Shiroh Ochiai, Takuya Urayama

NEW JOURNAL OF PHYSICS　11　(11)　115018　2009/11

DOI： 10.1088/1367-2630/11/11/115018 　

ISSN： 1367-2630
大気圧プラズマ流の超微弱発光可視化による機能性化学種の生成輸送解析

佐藤岳彦, 落合史朗, 浦山卓也

可視化情報学会全国講演会（米沢2009）講演論文集　287-288　2009/10
水中プラズマによる水の特性変化への印加電圧極性の影響

佐藤岳彦, 大泉雅伸, 宮原高志, 中谷達行

電気学会プラズマ技術委員会プラズマ研究会資料　33-36　2009/09
大気圧水蒸気プラズマ流による滅菌機構

佐藤岳彦, 古居剛

第33回静電気学会全国大会講演論文集’09　111-112　2009/09
大気圧水蒸気プラズマ流のOHラジカル生成輸送機構と滅菌特性

佐藤岳彦, 古居剛

日本機械学会第19回環境工学総合シンポジウム2009講演論文集　(09-13)　281-282　2009/07
Effect of Applied Voltage Polarity on Water Characteristics in Aqueous Plasma

Masanobu Oizumi, Takehiko Sato, Takashi Miyahara, Tatsuyuki Nakatani

第22回プラズマ材料科学シンポジウム(SPSM-2)アブストラクト集　7　2009/06
Interaction mechanism between a post-discharge flow and water surface Peer-reviewed

T. Miyahara, S. Ochiai, T. Sato

EPL　86　(4)　45001　2009/05

DOI： 10.1209/0295-5075/86/45001 　

ISSN： 0295-5075
Small Microwave Plasma Torch for Disinfection

Tetsuji Shimizu, T. Nosenko, Takehiko Sato, Rene Pompl, H. Schmidt, S. Fujii, Gregor Morfill

Abstracts of 2nd International Conference on Plasma Medicine (ICPM-2)　63　2009/03
Mechanism of Sterilization by Steam Plasma Flow at Atmospheric Pressure for Innovative Autoclave

Takehiko Sato, Takeshi Furui

Abstracts of 2nd International Conference on Plasma Medicine (ICPM-2)　77　2009/03
Characteristics of Nonequilibrium Plasma Flow and Its Sterilization Efficacy in a Tube at Atmospheric Pressure Peer-reviewed

Takehiko Sato, Osamu Furuya, Tatsuyuki Nakatani

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS　45　(1)　44-49　2009/01

DOI： 10.1109/TIA.2008.2009660 　

ISSN： 0093-9994

eISSN： 1939-9367
Generation and Transportation Mechanisms of Chemical Species by an Atmospheric Plasma Flow in a Tube for Sterilization Invited

Takehiko Sato, Osamu Furuya, Tatsuyuki Nakatani

Abstracts of Global COE Program International Symposium of Experiment-Integrated Computational Chemistry on Multiscale Fluidics (ECCMF)　17　2009/01
Combined efficacy of clarithromycin plus cefazolin or vancomycin against Staphylococcus aureus biofilms formed on titanium medical devices. Peer-reviewed

Fujimura S, Sato T, Mikami T, Kikuchi T, Gomi K, Watanabe A

Int J Antimicrob Agents　32　(6)　481-484　2008/12

DOI： 10.1016/j.ijantimicag.2008.06.030 　
Experimental and Computational Analyses of OH Generation Mechanism in a Steam Plasma Flow at Atmospheric Pressure

Takeshi Furui, Takehiko Sato

Proceedings of the Eighth International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI-2008)　80-81　2008/12
Improvement of Oxidation Reduction Potential by Plasma in Water

Takehiko Sato, Masanobu Oizumi, Takashi Miyahara, Tatsuyuki Nakatani

Proceedings of the International Symposium on Electrostatics in Okinawa　USBメモリ　2008/11
Transportation of Chemical Species in a Post Discharge Flow in Atmospheric Air

Takehiko Sato, Shiroh Ochiai, Takuya Urayama

Book of Abstracts of the 9th Asia-Pacific Conference on Plasma Science and Technology and 21st Symposium on Plasma Science for Materials (9APCPST & SPSM21)　79　2008/10
Generation of OH Radical by a Steam Plasma Flow at Atmospheric Pressure

Takeshi Furui, Takehiko Sato

Book of Abstracts of the 9th Asia-Pacific Conference on Plasma Science and Technology and 21st Symposium on Plasma Science for Materials (9APCPST & SPSM21)　87　2008/10
放電部下流域における化学的活性種の生成輸送機構

佐藤岳彦, 落合史朗, 浦山卓也

第32回静電気学会全国大会講演論文集'08　173-174　2008/09
ROS Generation in Water by Exposure to an Argon Plasma Flow

Takashi Miyahara, Shiroh Ochiai, Takehiko Sato

Proceedings of International Interdisciplinary- Symposium on Gaseous and Liquid Plasmas (ISGLP2008)　301-304　2008/09
大気圧マイクロ波プラズマシステムの医療応用

浦山卓也, 藤井修逸, 佐藤岳彦, 清水鉄司, R. Pompl, B. Steffes, G. E. Morfil

日本機械学会2008年度年次大会講演資料集　9　(08-1)　100-101　2008/08
Generation and transportation mechanisms of chemically active species by dielectric barrier discharge in a tube for catheter sterilization Peer-reviewed

Takehiko Sato, Osamu Furuya, Kei Ikeda, Tatsuyuki Nakatani

PLASMA PROCESSES AND POLYMERS　5　(6)　606-614　2008/08

DOI： 10.1002/ppap.200800035 　

ISSN： 1612-8850

eISSN： 1612-8869
水中プラズマによる水の特性変化

佐藤岳彦, 大泉雅伸, 宮原高志, 中谷達行

日本機械学会第18回環境工学総合シンポジウム2008講演論文集　(08-7)　272-273　2008/07
大気圧低温プラズマ流の照射による水の特性変化

宮原高志, 落合史朗, 佐藤岳彦

第20回「電磁力関連のダイナミクス」シンポジウム講演論文集　241-242　2008/05
大気圧水蒸気プラズマ流による滅菌特性 Peer-reviewed

古居剛, 佐藤岳彦

日本機械学会論文集 (B編)　74　(740)　879-883　2008/04

DOI： 10.1299/kikaib.74.879 　
Characteristics of Low Temperature Plasma Flow at Atmospheric Pressure and its Application to Medical Field Invited

Takehiko Sato

Book of Abstracts of the 6th EU-Japan Joint Symposium on Plasma Processing (JSPP2008)　20-21　2008/04
水中プラズマによる水の特性変化

佐藤岳彦, 大泉雅伸, 宮原高志, 中谷達行

日本機械学会東北支部第43期総会・講演会講演論文集　2008　(2008-1)　243-244　2008/03/15
Publisher: The Japan Society of Mechanical Engineers
大気圧プラズマ流による医療分野への展開 Invited

佐藤岳彦

日本学術振興会プラズマ材料科学第153委員会第85回研究会資料「バイオ・プラズマ応用」　23-29　2008/03
F04(5) マイクロ波大気圧プラズマシステムの医療応用(F04 大気圧プラズマ流による人間環境保全技術,先端技術フォーラム,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

浦山卓也, 藤井修逸, 佐藤岳彦, 清水鉄司, Pompl R., Steffes B., Morfill G. E.

年次大会講演資料集　2008　100-101　2008
Publisher: 一般社団法人日本機械学会
DOI： 10.1299/jsmemecjsm.2008.9.0_100 　
Characteristics of Steam Plasma Flow at Atmospheric Pressure and Its Sterilization Efficacy

Takeshi Furui, Takehiko Sato

Proceedings of the 7th International Symposium on Advanced Fluid Information and the 4th International Symposium on Transdisciplinary Fluid Integration (AFI/TFI-2007)　268-269　2007/12
細管内に形成された大気圧非平衡プラズマ流のラジカル輸送機構

佐藤岳彦, 古屋修, 中谷達行

日本機械学会第85期流体工学部門講演会講演論文集　(07-16)　110　2007/11
Dielectric Barrier Discharge in Tube for Catheter Sterilization and its Mechanism for Radical Generation and Transportation

Takehiko Sato, Osamu Furuya, Kei Ikeda, Tatsuyuki Nakatani

Abstracts of the 1st International Conference on Plasma Medicine (ICPM-1), Corpus Christi, Texas　48-50　2007/10
Analysis of Post Discharge Flow by Microwave Argon Plasma at Atmospheric Pressure for Bacteria Sterilization

Takehiko Sato, Shiroh Ochiai, Takuya Urayama, Tatsuyuki Nakatani, Takashi Miyahara

Abstracts of the 1st International Conference on Plasma Medicine (ICPM-1), Corpus Christi, Texas　51-53　2007/10
Inactivation of Escherichia coli by a coaxial microwave plasma flow Peer-reviewed

Takehiko Sato, Akiko Doi, Takuya Urayama, Tatsuyuki Nakatani, Takashi Miyahara

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS　43　(5)　1159-1163　2007/09

DOI： 10.1109/TIA.2007.904367 　

ISSN： 0093-9994
Experimental Analysis of Low Temperature Plasma Flow at Atmospheric Pressure

Shiroh Ochiai, Takuya Urayama, Takehiko Sato

Abstracts of the 4th International Conference on Flow Dynamics　7-17　2007/09
細管内誘電体バリア放電のラジカル生成輸送解析と滅菌特性 Invited Peer-reviewed

佐藤岳彦, 古屋修, 池田圭, 中谷達行

第31回静電気学会全国大会講演論文集　21-22　2007/09
大気圧雰囲気における低温プラズマ殺菌法の開発

落合史朗, 佐藤岳彦, 宮原高志, 土井章子, 浦山卓也, 中谷達行

日本機械学会第17回環境工学総合シンポジウム2007講演論文集　(07-12)　247-248　2007/07
大気圧水蒸気プラズマ流による滅菌特性

古居剛, 佐藤岳彦

日本機械学会第17回環境工学総合シンポジウム2007講演論文集　(07-12)　249-250　2007/07
細管内誘電体バリア放電の数値解析

古屋修, 佐藤岳彦, 池田圭, 中谷達行

日本機械学会第17回環境工学総合シンポジウム2007講演論文集　(07-12)　230-231　2007/07
大気圧低温プラズマ流による大腸菌形状への影響

落合史朗, 佐藤岳彦, 宮原高志, 土井章子, 浦山卓也, 中谷達行

日本機械学会東北支部第42期総会・講演会講演論文集　(2007-1)　181-182　2007/03
Experimental Analysis of Nonequilibrium Plasma Flow at Atmospheric Pressure for Catheter Sterilization

Osamu Furuya, Takehiko Sato, Tatsuyuki Nakatani

Proceedings of the Third International Conference on Flow Dynamics, Matsushima　CD-ROM　2006/11
Inactivation of Escherichia Coli by Argon Plasma Flow at Atmospheric Pressure

Takehiko Sato, Takashi Miyahara, Shiroh Ochiai, Akiko Doi, Takuya Urayama, Tatsuyuki Nakatani

Proceedings of the 6th International Symposium on Advanced Fluid Information (AFI-2006)　55-56　2006/10
Control performance of interactions between reactive plasma jet and substrate Peer-reviewed

Hideya Nishiyama, Takehiko Sato, Shota Niikura, Genta Chiba, Hidemasa Takana

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS　45　(10B)　8085-8089　2006/10

DOI： 10.1143/JJAP.45.8085 　

ISSN： 0021-4922
大気圧非平衡プラズマ流の細管内ラジカル流動場と滅菌特性

古屋修, 佐藤岳彦, 中谷達行

日本機械学会第84期流体工学部門講演会講演論文集　(06-21)　CD- ROM　2006/10
大気圧低温プラズマ流による大腸菌の滅菌機構

佐藤岳彦, 宮原高志, 落合史朗, 土井章子, 浦山卓也, 中谷達行

日本機械学会第84期流体工学部門講演会講演論文集　(06-21)　CD-ROM　2006/10
マイクロ波放電を用いた大気圧低温プラズマ流の滅菌機構

佐藤岳彦, 宮原高志, 落合史朗, 土井章子, 浦山卓也, 中谷達行

静電気学会講演論文集’06 (第30回静電気学会全国大会)　189-190　2006/09
Sterilization mechanism for Escherichia coli by plasma flow at atmospheric pressure Peer-reviewed

Takehiko Sato, Takashi Miyahara, Akiko Doi, Shiroh Ochiai, Takuya Urayama, Tatsuyuki Nakatani

APPLIED PHYSICS LETTERS　89　(7)　073902　2006/08

DOI： 10.1063/1.2336594 　

ISSN： 0003-6951
Sterilization Efficacy in a Tube by a Nonthermal Plasma Flow at Atmospheric Pressure

Takehiko Sato, Osamu Furuya, Tatsuyuki Nakatani

Proceedings of the ESA/IEEE-IAS/IEJ/SFE Joint Conference on Electrostatics 2006　1　347-355　2006/06
Computational Evaluation of Coating Characteristics in Ceramic Spraying Peer-reviewed

Takehiko Sato, Oleg P. Solonenko, Hideya Nishiyama

The Reports of the Institute of Fluid Science, Tohoku University　18　27-34　2006/06
Spectroscopic Investigation of the 3D Plasma Clusters' Environment

Tetyana Antonova, Beatrice M. Annaratone, Takehiko Sato, Hubertus M. Thomas, Gregor E. Morfill

Proceedings of 13th International Congress on Plasma Physics, Kiev　CD-ROM　2006/05
大気圧非平衡プラズマ流による細管内部の滅菌特性

佐藤岳彦, 古屋修, 中谷達行

日本機械学会東北支部第41期総会・講演会講演論文集　2006　(2006-1)　199-200　2006/03
Publisher: The Japan Society of Mechanical Engineers
Sterilization efficacy of a coaxial microwave plasma flow at atmospheric pressure Peer-reviewed

T Sato, K Fujioka, R Ramasamy, T Urayama, S Fujii

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS　42　(2)　399-404　2006/03

DOI： 10.1109/TIA.2006.870039 　

ISSN： 0093-9994
Control Performance of Interactions between Reactive Plasma Jet and the Substrate Peer-reviewed

Hideya Nishiyama, Takehiko Sato, Shota Nikura, Genta Chiba, Hidemasa Takana

Proceedings of the 6th International Conference on Reactive Plasmas and 23rd Symposium on Plasma Processing (ICRP-6/SPP23), Matsushima　173-174　2006/01
Control Performance of Plasma Jet Behaviors Impinging onto the Substrate

Shota Nikura, Genta Chiba, Takehiko Sato, Hidemasa Takana, Hideya Nishiyama

Abstracts of the Second International Conference on Flow Dynamics (ICFD2005)　3-17　2005/11
Spreading behavior of an impacting drop on a structured rough surface Peer-reviewed

D Sivakumar, K Katagiri, T Sato, H Nishiyama

PHYSICS OF FLUIDS　17　(10)　100608　2005/10

DOI： 10.1063/1.2033627 　

ISSN： 1070-6631

eISSN： 1089-7666
大気圧低温プラズマ流による大腸菌の滅菌特性

佐藤岳彦, 土井章子, 落合史朗, 宮原高志, 藤岡万也, ラズ・ラマサミー, 浦山卓也, 中谷達行

日本機械学会2005年度年次大会講演論文集　6　145-146　2005/09/18
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/jsmemecjo.2005.6.0_145 　

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An atmospheric low temperature plasma flow using a coaxial cable for microwave transmission has been applied to sterilize Escherichia coli to investigate the relationship between gas temperature and sterilization rates. The plasma source mainly consists of a cavity, a quartz discharge tube, a coaxial cable, a microwave power source and a gas supply system. The sterilization rate shows 100% in the center region of plasma exposure when the exposure temperature is 333K. The rate is decreased in the outer region of the plasma exposure. The gas temperature distribution shows the same tendency of the sterilization rate. This implies that the gas temperature is one of sterilization indicators.
Analysis of a methanol decomposition process by a nonthermal plasma flow Peer-reviewed

T Sato, M Kambe, H Nishiyama

JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING　48　(3)　432-439　2005/08

DOI： 10.1299/jsmeb.48.432 　

ISSN： 1340-8054
Controllable Thermofluid Field of Reactive Plasma Jet Impinging onto the Substrate Peer-reviewed

Hideya Nishiyama, Takehiko Sato, Genta Chiba, Hidemasa Takana

Proceedings of the 17th International Symposium on Plasma Chemistry, Toronto　CD-ROM　2005/08
Comparison Gradient and Gradientless Models of Zirconia Particles Heating under Plasma Coating Formation Peer-reviewed

Oleg P. Sosonenko, Takehiko Sato, Hideya Nishiyama

Abstracts of the 17th International Symposium on Plasma Chemistry, Toronto　948　2005/08
Reactive flow analysis of nonthermal plasma in a cylindrical reactor Peer-reviewed

T Sato, D Ito, H Nishiyama

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS　41　(4)　900-905　2005/07

DOI： 10.1109/TIA.2005.851036 　

ISSN： 0093-9994
大気圧非平衡プラズマ流によるVOC分解特性とプロセス解析

佐藤岳彦, 神戸誠, 西山秀哉

日本機械学会第15回環境工学総合シンポジウム2005講演論文集　266-267　2005/07
Sterilization of Escherichia Coli by a Low Temperature Coaxial Microwave Plasma Flow at Atmospheric Pressure

Takehiko Sato, Akiko Doi, Shiroh Ochibai, Takashi Miyahara, Takuya Urayama, Kazunari Fujioka, Raju Ramasamy, Tatsuyuki Nakatani

第18回プラズマ材料科学シンポジウム（SPSM18）アブストラクト集　110　2005/06
Contorol Performance of Reactive Plasma Jet Impinging onto the Substrate Peer-reviewed

Hideya Nishiyama, Takehiko Sato, Shota Niikura, Genta Chiba, Hidemasa Takana

第18回プラズマ材料科学シンポジウムアブストラクト集　50　2005/06
Overexpression of the Runx3 transcription factor increases the proportion of mature thymocytes of the CD8 single-positive lineage Peer-reviewed

K Kohu, T Sato, S Ohno, K Hayashi, R Uchino, N Abe, M Nakazato, N Yoshida, T Kikuchi, Y Iwakura, Y Inoue, T Watanabe, S Hahn, M Satake

JOURNAL OF IMMUNOLOGY　174　(5)　2627-2636　2005/03

ISSN： 0022-1767
Sterilization of Escherichia coli by a coaxial microwave plasma flow Peer-reviewed

T Sato, T Nakatani, A Doi, T Urayama, T Miyahara

Conference Record of the 2005 IEEE Industry Applications Conference, Vols 1-4　767-770　2005

ISSN： 0197-2618
大気圧非平衡プラズマ流によるVOC分解プロセスの実験および数値解析

T. Sato, M. Kambe, H. Nishiyama

日本機械学会東北支部第40期秋季講演会講演論文集　(041-2)　71-72　2004/09
大気圧低温プラズマ流による滅菌特性

佐藤岳彦, 土井章子, 西山秀哉, 藤岡万也, ラズラマサミー, 浦山卓也, 藤井修逸

日本機械学会2004年度年次大会講演論文集　2004　57-58　2004/09
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/jsmemecjo.2004.2.0_57 　

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A new type of atmospheric low temperature plasma source was developed utilizing a coaxial cable for microwave transmission rather than conventionally used waveguides. The plasma source has advantages such as portability, simple configuration, and ability to operate with wide range of gases and its mixtures. It mainly consists of a cavity, a quartz discharge tube, a coaxial cable, a microwave power source and a gas supply system. Using this plasma source, we tried to clarify sterilization characteristics of Bacillus subtilis. The log reduction numbers of Bacillus subtilis was obtained at least 5 (10^<-5>) under the following operation conditions: gas flow rates of Ar (14 SLM) with mixing oxygen of 0.5 SLM and input power is 400 W. Distributions of temperature and gas velocity were also measured two-dimensionally by using E-type thermocouple and Pilot tube, respectively. The temperature distributions and the peak value of temperature were influenced by the gas flow rate and the kinds of mixing gas. The effective sterilization is obtained under the condition of the substrate surface temperature of 353 K.
誘電体バリア放電によるVOC分解特性

T. Sato, M. Kambe, H. Nishiyama

静電気学会2004年全国大会講演論文集　19-20　2004/09
Evaluations of ceramic spraying processes by numerical simulation Peer-reviewed

T Sato, OP Solonenko, H Nishiyama

MATERIALS TRANSACTIONS　45　(6)　1874-1879　2004/06

DOI： 10.2320/matertrans.45.1874 　

ISSN： 1345-9678

eISSN： 1347-5320
Reaction field analysis of a non-thermal plasma flowing in a rectangular reactor Peer-reviewed

T Sato, D Ito, H Nishiyama

THIN SOLID FILMS　457　(1)　78-83　2004/06

DOI： 10.1016/j.tsf.2003.12.034 　

ISSN： 0040-6090
Decomposition Characteristics of VOCs Using Nonthermal Plasma Flow

Takehiko Sato, Makoto Kambe, Hideya Nishiyama

Proceedings of the 7th Asia Pacific Conference on Plasma Science and Technology (APCPST) & 17th Symposium on Plasma Science for Materials (SPSM)　CD-ROM　2004/06
Development of feedback control systems for an oscillating plasma jet Peer-reviewed

H Nishiyama, T Sato, Y Shiozaki

VACUUM　73　(3-4)　691-697　2004/04

DOI： 10.1016/j.vacuum.2003.12.091 　

ISSN： 0042-207X
非平衡プラズマ流によるメタノールの分解特性

T. Sato, M. Kambe, H. Nishiyama

日本機械学会関東支部10周年記念第10期総会講演会講演論文集　(040-1)　175-176　2004/03
Computational simulation of a particle-laden RF inductively coupled plasma with seeded potassium Peer-reviewed

M Shigeta, T Sato, H Nishiyama

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　47　(4)　707-716　2004/02

DOI： 10.1016/j.ijheatmasstransfer.2003.08.007 　

ISSN： 0017-9310
Pharmacokinetic analysis of combination chemotherapy with carboplatin and etoposide in small-cell lung cancer patients undergoing hemodialysis Peer-reviewed

A Inoue, Y Saijo, T Kikuchi, K Gomi, T Suzuki, M Maemondo, M Miki, T Sato, T Nukiwa

ANNALS OF ONCOLOGY　15　(1)　51-54　2004/01

DOI： 10.1093/annonc/mdh008 　

ISSN： 0923-7534
Performance evaluation of arc ash melting systems by computational simulation Peer-reviewed

H Nishiyama, T Shimizu, T Sato

ISIJ INTERNATIONAL　44　(2)　268-274　2004

DOI： 10.2355/isijinternational.44.268 　

ISSN： 0915-1559
Computational evaluation of coating characteristics in ceramic spraying

T Sato, OP Solonenko, H Nishiyama

Thermal Spray 2004: Advances in Technology and Application, Proceedings　(CD-ROM, No.036)　724-729　2004
Sterilization characteristics by a coaxial microwave plasma flow at atmospheric pressure

T Sato, K Fujioka, R Ramasamy, T Urayama, S Fujii

CONFERENCE RECORD OF THE 2004 IEEE INDUSTRY APPLICATIONS CONFERENCE, VOLS 1-4　937-940　2004

ISSN： 0197-2618
Performance of Intelligent Control Systems for an Oscillating Plasma Jet Peer-reviewed

Hideya Nishiyama, Takehiko Sato, Yuichi Shiozaki

Proceedings of ISAPS'03, Advances in Applied Plasma Science　4　79-84　2003/09
非平衡プラズマの反応流動場解析

T. Sato, D. Ito, H. Nishiyama

静電気学会講演論文集’03 (第27回静電気学会全国大会)　69-70　2003/09
Experimental Analysis of DC-RF Hybrid Plasma Flow Systems Peer-reviewed

K. Kawajiri, T. Sato, H. Nishiyama

Abstracts of Joint International Plasma Symposium of 6th APCPST, 15th SPSM, OS2002 & 11th KAPRA　143　2003/07
Basic Discharge Characteristics of a Non-thermal Plasma Flow Peer-reviewed

T. Sato, M. Kambe, H. Nishiyama

Abstracts of Joint International Plasma Symposium of 6th APCPST, 15th SPSM, OS2002 & 11th KAPRA　140　2003/07
Numerical Simulation of a Potassium-seeded RF Inductively Coupled Plasma with Particles Peer-reviewed

M. Shigeta, T. Sato, H. Nishiyama

Abstracts of Joint International Plasma Symposium of 6th APCPST, 15th SPSM, OS2002 & 11th KAPRA　109　2003/07
Arc Flow Optimization and Electrode Life Evaluation by Numerical Simulation Peer-reviewed

H. Nishiyama, K. Takamura, T. Sato

Abstracts of Joint International Plasma Symposium of 6th APCPST, 15th SPSM, OS2002 & 11th KAPRA　144　2003/07
Numerical simulation of a potassium-seeded turbulent RF inductively coupled plasma with particles Peer-reviewed

M Shigeta, T Sato, H Nishiyama

THIN SOLID FILMS　435　(1-2)　5-12　2003/07

DOI： 10.1016/S0040-6090(03)00366-3 　

ISSN： 0040-6090
Experimental analysis of a DC-RF hybrid plasma flow Peer-reviewed

K Kawajiri, T Sato, H Nishiyama

SURFACE & COATINGS TECHNOLOGY　171　(1-3)　134-139　2003/07

DOI： 10.1016/S0257-8972(03)00256-1 　

ISSN： 0257-8972
Reactive Flow Analysis of Nonthermal Plasma in a Cylindrical Reactor Peer-reviewed

Takehiko Sato, Dai Ito, Hideya Nishiyama

Proceedings of ESA-IEEE Joint Meeting on Electrostatics 2003　431-441　2003/06
Optimization for Arc Ash Melting Process by Numerical Simulation

Hideya Nishiyama, Toshiki Shimizu, Takehiko Sato

Proceedings of the 16th International Symposium on Plasma Chemistry, Taormina　(CD-ROM, No.631)　2003/06
3D modeling of evaporation of water injected into a plasma jet Peer-reviewed

K Ramachandran, T Sato, H Nishiyama

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　46　(9)　1653-1663　2003/04

DOI： 10.1016/S0017-9310(02)00440-4 　

ISSN： 0017-9310
Numerical simulation of a particle-laden plasma flow in a complex configuration under an electromagnetic field Peer-reviewed

T Sato, OP Solonenko, H Nishiyama

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW　29　(3)　461-474　2003/03

DOI： 10.1016/S0301-9322(02)00153-2 　

ISSN： 0301-9322
Characteristics of breakdown voltage at a narrow gap in a non-thermal plasma flow Peer-reviewed

T Sato, H Nishiyama, M Kambe

JOURNAL OF THE KOREAN PHYSICAL SOCIETY　42　S782-S786　2003/02

ISSN： 0374-4884
Optimization of functional DC-RF hybrid plasma flow Peer-reviewed

K. Kawajiri, T. Sato, H. Nishiyama

第52回理論応用力学講演会講演論文集(NCTAM 2003)　509-510　2003/01
Numerical simulation of a particle-laden plasma flow in a complex configuration under an electromagnetic field Peer-reviewed

Takehiko Sato, Oleg P. Solonenko, Hideya Nishiyama

International Journal of Multiphase Flow　29　(3)　461-474　2003
Publisher: Elsevier Ltd
DOI： 10.1016/S0301-9322(02)00153-2 　

ISSN： 0301-9322
Evaluations of Ceramic Spraying Processes by Numerical Simulation Peer-reviewed

T. Sato, O.P. Solonenko, H. Nishiyama

溶射　40　(1)　9-13　2003/01
Performance evaluation of arc-electrodes systems for high temperature materials processing by computational simulation Peer-reviewed

H Nishiyama, T Sato, K Takamura

ISIJ INTERNATIONAL　43　(6)　950-956　2003

DOI： 10.2355/isijinternational.43.950 　

ISSN： 0915-1559
Numerical Simulation of a Particle-Laden RF Inductively Coupled Plasma with Functional Enhancement

Masaya Shigeta, Takehiko Sato, Hideya Nishiyama

Proc. of JSME/KSME Fluids Eng.　868-873　2002/11
Structural Analysis of Functional DC-RF Hybrid Plasma Flow

Kohtaro Kawajiri, Takehiko Sato, Hideya Nishiyama

Proc. of JSME/KSME Fluids Engineering　874-879　2002/11
Numerical Simulation of In-flight Particle Processing in an Advanced Inductively Coupled Plasma Flow

Masaya Shigeta, Takehiko Sato, Hideya Nishiyama

Proceedings of International Symposium on Innovative Materials Processing by Controlling Chemical Reaction Field　48-51　2002/11
Optimization of Advanced Inductively Coupled Plasma Flow for Material Processing

Kohtaro Kawajiri, Takehiko Sato, Hideya Nishiyama

Proceedings of International Symposium on Innovative Materials Processing by Controlling Chemical Reaction Field　176-179　2002/11
Performance of a thermal nonequilibrium plasma jet control system Peer-reviewed

H Nishiyama, T Sato, D Kato

PLASMA DEVICES AND OPERATIONS　10　(3)　157-168　2002/09

DOI： 10.1080/1051999021000004676 　

ISSN： 1051-9998
非熱平衡プラズマ放電特性へのガス流動効果

T. Sato, M. Kambe, H. Nishiyama

静電気学会講演論文集’０２　271-272　2002/08
アーク灰溶融プロセスの最適化数値シミュレーション

西山秀哉, 清水俊樹, 佐藤岳彦

日本機械学会第12回環境工学総合シンポジウム2002講演論文集　2002　(12)　467-469　2002/07
Publisher: The Japan Society of Mechanical Engineers

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For the optimization of arc ash melting process, the present study has proposed the new numerical model to consider the arc flow boundary conditions without using experimental data and also the complex interactions between the arc flow and molten soil interface with phase change. Next, the effects of arc current, electrode gap, inlet gas flow rate and cathode vertex angle on the thermofluid field of arc-molten soil system are clarified by numerical simulation to provide the fundamental data for optimum operating conditions and melter configuration of arc ash melting process.
数値実験によるセラミック溶射プロセスの評価

T. Sato, O. Solonenko, H. Nishiyama

日本溶射協会第75回（2002年度春季）全国講演大会　47-48　2002/06
Optimization for plasma spraying processes by numerical simulation Peer-reviewed

T Sato, OP Solonenko, H Nishiyama

THIN SOLID FILMS　407　(1-2)　54-59　2002/03

DOI： 10.1016/S0040-6090(02)00012-3 　

ISSN： 0040-6090
減圧プラズマジェットの不安定性と制御システム特性

T. Sato, Y. Shiozaki, D. Kato, K. Katagiri, H. Nishiyama

日本溶射協会第74回（平成13年度）秋季全国講演大会講演論文集　74　27-28　2001/11
アークプラズマ流の最適化と電極寿命評価

西山秀哉, 佐藤岳彦, 高村和宗

日本機械学会流体工学部門講演会講演概要集　(01-3)　78　2001/10
Optimization for Plasma Spraying Processes by Numerical Simulation

Takehiko Sato, Oleg P. Solonenko, Hideya Nishiyama

Proceedings of the 1st International Symposium on Advanced Fluid Information　502-505　2001/10
非平衡プラズマジェットの制御性能と不安定特性

佐藤岳彦, 塩崎裕一, 西山秀哉

日本機械学会東北支部盛岡地方講演会講演論文集　(011-2)　93-94　2001/09
Control System Characteristics of a Nonequilibrium Plasma Jet Peer-reviewed

Hideya Nishiyama, Takehiko Sato, Daigo Kato

Proceedings of the 15th International Symposium on Plasma Chemistry　1　155-160　2001/07
Numerical Study Possibilities of Plasma Spraying Processes under Increased Peer-reviewed

Takehiko Sato, Oleg P. Soloneko, Hideya Nishiyama

Proceedings of the 15th International Symposium on Plasma Chemistry　6　2647-2653　2001/07
Visualization of the In-flight Particle Velocity in the Mixed Plasma Jet

Hideya Nishiyama, Takehiko Sato, Kazunari Katagiri

Journal of Visualization　4　(1)　3-3　2001/04

ISSN： 1343-8875
Mixing and magnetic effects on a nonequilibrium argon plasma jet Peer-reviewed

T Sato, M Shigeta, D Kato, H Nishiyama

INTERNATIONAL JOURNAL OF THERMAL SCIENCES　40　(3)　273-278　2001/03

DOI： 10.1016/S1290-0729(00)01217-5 　

ISSN： 1290-0729
Computational experiment of a complex dusted plasma flow Peer-reviewed

T Sato, H Nishiyama

COMPUTATIONAL FLUID DYNAMICS 2000　789-790　2001
プラズマ溶射プロセスの最適化数値シミュレーション

佐藤岳彦, O. P. Solonenko, 西山秀哉

日本溶射協会第72回全国講演大会講演論文集　27-28　2000/11
ガスの注入条件による高周波誘導プラズマ流の高機能化

西山秀哉, 佐藤岳彦, 河尻耕太郎, 片桐一成

日本機械学会東北支部多賀城地方講演会講演論文集　(001-2)　31-32　2000/09
Mixing effect on a nonequilibrium RF induction plasma Peer-reviewed

H. Nishiyama, Takehiko Sato, S. Ito, Takeshi Sato, S. Kamiyama

Heat and Mass Transfer/Waerme- und Stoffuebertragung　36　(5)　433-437　2000/09
Publisher: Springer-Verlag GmbH & Company KG
DOI： 10.1007/s002310000102 　

ISSN： 0947-7411
非平衡混合プラズマジェットの制御システムの特性

西山秀哉, 佐藤岳彦, 加藤大悟, 片桐一成

日本機械学会2000年度年次大会講演論文集　IV　293-294　2000/08
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/jsmemecjo.2000.4.0_293 　

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It is investigated experimentally that the interrelation between characteristics of a nonequilibrium Ar plasma jet such as gas temperature, radiation intensity, electron temperature and electron number density, and operation conditions such as discharge current, magnetic flux density, flow rate of gas and mixing rate of gases. It is clarified that the radiation intensity is important controlled variable because of the good interrelation to the discharge current and magnetic flux density of controllable factor. The constructed feedback control system based on those interrelation is possible to control the wide range of the radiation intensity by discharge current and also the radiation intensity with high response by application of a magnetic field. These results imply the possibility of the optimization of this control system.
微粒子複雑プラズマ熱流動の数値実験 Peer-reviewed

佐藤岳彦, 西山秀哉

日本混相流学会年会講演会2000講演論文集　19-20　2000/07
Numerical simulation of mixing effect on a non-equilibrium plasma jet in an applied magnetic field Peer-reviewed

H Nishiyama, Y Matsushima, T Sato, S Kamiyama

JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING　43　(2)　314-322　2000/05

DOI： 10.1299/jsmeb.43.314 　

ISSN： 1340-8054
Electrode joining method by coating Sn/Mo layer on N-type thermoelectric element Peer-reviewed

Takehiko Sato, Kazuo Kamada, Yoshimitsu Nakamura

Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A　66　(641)　180-183　2000
Publisher: Japan Society of Mechanical Engineers
DOI： 10.1299/kikaia.66.180 　

ISSN： 0387-5008
Numerical simulation of particle-laden plasma flow in a pipe under an RF electromagnetic field Peer-reviewed

Takehiko Sato, Hideya Nishiyama

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B　66　(645)　1295-1302　2000
Publisher: Japan Society of Mechanical Engineers
DOI： 10.1299/kikaib.66.1295 　

ISSN： 0387-5016
電磁場下の管内微粒子プラズマ流の数値シミュレーション

佐藤岳彦, 西山秀哉

第13回数値流体力学シンポジウム講演要旨集　203　1999/12
微粒子プラズマ流動の数値実験

佐藤岳彦, 西山秀哉

流体科学シンポジウム講演論文集「スーパーコンピューティングと計算流体科学」　10-17　1999/12
磁場下のプラズマジェットの混合効果

西山秀哉, 佐藤岳彦, 茂田正哉, 加藤大悟

プラズマ・核融合学会第16回年会予稿集　(16)　99-99　1999/11
Publisher:
Magnetic Effect on a Nonequilibrium Plasma Jet in an Applied Magnetic Field

Takehiko Sato, Hideya Nishiyama, Daigo Kato

Proceedings of the 14th International Symposium on Plasma Chmistry, Prague,　II　1021-1026　1999/08
Intelligent Integrated Plasma Laboratory for Complex Studying the Basic Phenomena under Plasma Sprayed Materials Formation

Oleg P. Solonenko, Hideya Nishiyama, Takehiko Sato, Andrey V. Smirnov

Proc. the 14th International Symp. on Plasma Chemistry, Prague　IV　2133-2138　1999/08
Magnetic Control Simulation of In-Flight Particle Characteristics in a Low Pressure Plasma Spraying

H. Nishiyama, O. P. Solonenko, T. Sato

12th Symp. on Plasma Sciences for Materials, 日本学術振興会第153委員会　54　1999/07
非平衡混合プラズマジェットの磁場制御

西山秀哉, 佐藤岳彦, 加藤大悟, 片桐一成

日本機械学会1999年度年次大会講演論文集　IV　83-84　1999/07
高周波誘導非平衡プラズマの混合特性

西山秀哉, 佐藤岳彦, 伊藤修治, 佐藤武志, 神山新一

日本機械学会東北支部第34期総会・講演会講演論文集　(991-1)　115-116　1999/03
磁気ダクト内の混合プラズマジェットの電磁熱流動解析

西山秀哉, 松島幸夫, 佐藤岳彦, 神山新一

日本機械学会第76期全国大会講演論文集(III)　(98-3)　277-278　1998/10
平板に衝突する非平衡プラズマジェットの電磁場制御

佐藤岳彦, 西山秀哉, 神山新一

日本機械学会第73期通常総会講演会講演論文集(III)　(96-1)　183-184　1996/04
Electromagnetic Control of a Nonequilibrium Plasma Jet Impinging on a Flat Plate Peer-reviewed

Takehiko Sato, Hideya Nishiyama, Shinichi Kamiyama

日本機械学会論文集(B編)　62　(594)　519-526　1996/02

DOI： 10.1299/kikaib.62.519 　
Visualization of the Magnetic Confinement of a Nonequilibrium Plasma Jet Impinging on a Flat Plate

Hideya Nishiyama, Takehiko Sato, Yukio Matsushima, Shinichi Kamiyama

ALBUM OF VISUALIZATION　13　11-12　1996

ISSN： 0919-4630
Magnetic Control and Electrostatic Response of a Non-Equilibrium Plasma JetImpinging on a Flat Plate

Hideya Nishiyama, Takehiko Sato, Shinichi Kamiyama

Proceedings of the 3rd ASIA-PACIFIC Conference on Plasma Science & Technology　2　447-452　1996
Advanced Functions of a Non-equilibrium Plasma Jet by Seeding in the Applied Magnetic Field

Hideya Nishiyama, Takehiko Sato, Abraham Veefkind, Shinichi Kamiyama

Proceedings of the International Symposium on Microsystems, Intelligent Materials and Robots　271-274　1995/09
Effect of Magnetic Field on Turbulence of Nonequilibrium Plasma Jet in Pipe Peer-reviewed

Takehiko Sato, Hideya Nishiyama, Shinichi Kamiyama

日本機械学会論文集(B編)　61　(588)　2911-2917　1995/08

DOI： 10.1299/kikaib.61.2911 　
Effect of a Magnetic Field on Turbulence of a Nonequilibrium Plasma Jet in a Pipe

Takehiko Sato, Hideya Nishiyama, Shinichi Kamiyama

Proceedings of the 12th International Symposium on Plasma Chemistry　III　1779-1784　1995/08
Functional Enhancement of a Non-equilibrium Plasma Jet by Seeding in the Applied Magnetic Field Peer-reviewed

Hideya Nishiyama, Takehiko Sato, Abraham Veefkind, Shinichi Kamiyama

Heat and Mass Transfer　30　(5)　291-296　1995/05

DOI： 10.1007/s002310050023 　
管内非平衡プラズマジェットの乱れへの磁場の影響

佐藤岳彦, 西山秀哉, 神山新一

日本機械学会第72期通常総会講演会講演論文集(III)　(95-1)　13-14　1995/03
シーディングによる磁場下の非平衡プラズマジェットの高機能化

西山秀哉, 佐藤岳彦, 神山新一

日本機械学会流体工学部門講演会講演論文集　(940-53)　229-230　1994/11
Magnetic Control of a Low Pressure Plasma Pipe Flow Peer-reviewed

Takehiko Sato, Hideya Nishiyama, Shinichi Kamiyama

Proceedings of the Third JSME-KSME Fluid Engineering Conference　260-264　1994/07
Control of a Non-equilibrium Plasma Jet by Applying the Magnetic Field (Effects of Magnetic Field Distribution) Peer-reviewed

Takehiko Sato, Hideya Nishiyama, Shinichi Kamiyama

日本機械学会論文集(B編)　60　(572)　1161-1167　1994/04
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/kikaib.60.1161 　

ISSN： 0387-5016

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Control of a non-equilibrium plasma jet by applying the magnetic field is investigated experimentally. This paper describes the characteristics of plasma parameters, excited temperature and thermofluid characteristics under different magnetic flux densities and under the magnetic field distributions of the mirror and the cusp types. With the increase of the magnetic flux density of the mirror-type, electron density, electron temperature and ion velocity increase rapidly, and furthermore, excited temperature, gas temperature and gas velocity increase slightly only in the core region. These may result from the confinement of electrons by magnetic lines of force, Lorentz force and induced electric field effect. However, the cusp-type magnetic field shows a slight effect on the plasma characteristics, compared to the case of the mirror-type. This implies the mirror-type magnetic field is far better than the cusp-type for controlling the characteristics of a plasma jet.
磁場による非平衡プラズマジェットの制御（軸方向分布への影響）

佐藤岳彦, 西山秀哉, 神山新一

日本機械学会第71期全国大会講演論文集（C）　930　(63)　402-404　1993/10
磁場による非平衡プラズマジェットの熱と流れの精密制御

Hideya Nishiyama, Takehiko Sato, Shinichi Kamiyama

東北大学流体科学研究所報告　4　1-8　1993/03
Precise Control of Characterization of a Low Pressure Plasma Jet by Applying the Magnetic Field

Hideya Nishiyama, Takehiko Sato, Shinichi Kamiyama

Proceedings of the Tenth International Conference on Gas Discharges and Their Applications　2　778-781　1992/09
磁場による非平衡プラズマジェットの熱と流れの精密制御

西山秀哉, 佐藤岳彦, 神山新一

日本機械学会東北支部第27期総会講演会論文集　921　27-29　1992/03

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Misc. 104

電気的に等量のプラズマが生成する化学および電気刺激に対する細胞応答

中山愛理, 劉思維, 矢野憲一, 中嶋智樹, 佐藤岳彦

クリーンテクノロジー　35　(2)　17-20　2025/02
Publisher: 日本工業出版株式会社
高速ナノ液滴が拓く「超節水・薬剤フリー・濡れない」殺菌・洗浄 Invited

佐藤岳彦, 劉思維, 中嶋智樹, 肖昀晨, 藤村茂, 金澤誠司

クリーンテクノロジー　33　(9)　40-43　2023/09
Numerical Exploration of Plasma-Induced Charge and Electric Field-Induced Transport Transformations in Biological Membranes

内田諭, 佐藤岳彦

東北大学流体科学研究所共同利用・共同研究拠点流体科学国際研究教育拠点活動報告書(CD-ROM)　2022　2023
Highly Efficient Gene Transfer in Cells by Combined Plasma and Pulsed Electric Field Treatment in Liquid

本田竜介, 佐々木渉太, 高島圭介, 神崎展, 佐藤岳彦, 金子俊郎

応用物理学会春季学術講演会講演予稿集(CD-ROM)　69th　2022

ISSN： 2436-7613
Sterilization and Virus Inactivation by Fine Bubbles Invited Peer-reviewed

Takehiko SATO, Yoshikatsu UEDA, Katsuyuki TAKAHASHI, Koichi TAKAKI

Japanese Journal of Multiphase Flow　35　(2)　251-258　2021/06/15
Publisher: The Japanese Society for Multiphase Flow
Generation and Application of Pressure Wave by Discharge in Water Invited Peer-reviewed

Takehiko Sato

Journal of Plasma and Fusion Research　97　(5)　255-260　2021/05/25
Flow Visualization of Atmospheric-Pressure He Microplasma Jet Ejected from a Narrow Metal Pipe Electrode

45　(3)　120-121　2021/05

DOI： 10.34342/iesj.2021.45.3.120 　
Biological Phenomena Induced by Pulsed Electrical Stimulation Invited

Sunao KATSUKI, Takehiko SATO

The Journal of The Institute of Electrical Engineers of Japan　141　(3)　139-142　2021/03/01
Publisher: Institute of Electrical Engineers of Japan (IEE Japan)
DOI： 10.1541/ieejjournal.141.139 　

ISSN： 1340-5551

eISSN： 1881-4190
Study on Gene Transfer Method Using In-Liquid Plasma

本田竜介, 佐々木渉太, 高島圭介, 神崎展, 佐藤岳彦, 金子俊郎

応用物理学会春季学術講演会講演予稿集(CD-ROM)　68th　2021

ISSN： 2436-7613
プラズマによる水中有機物の分解と水中殺菌 Invited

竹内希, 見市知昭, 上原聡司, 佐藤岳彦

静電気学会誌　44　(6)　230-238　2020/11
環境工学を取り巻く状況 Invited

佐藤岳彦

機械工学年鑑2020　2020/07
プラズマ流による殺菌・ウイルス不活化法 Invited

佐藤岳彦

フルードパワーシステム「フルードパワーのクリーン化技術最前線」　51　(4)　172-176　2020/07
Utilization of In-Liquid Plasma in Highly Efficient Transfection into Cells

本田竜介, 佐々木渉太, 高島圭介, 神崎展, 佐藤岳彦, 金子俊郎

プラズマ・核融合学会年会(Web)　37th　2020
Study on Mechanism of Drug Simulated Molecule Introduction by Direct In-liquid Plasma Treatment

本田竜介, 佐々木渉太, 高島圭介, 神崎展, 佐藤岳彦, 金子俊郎

応用物理学会春季学術講演会講演予稿集(CD-ROM)　67th　2020

ISSN： 2436-7613
Highly Efficient Introduction of Medium Molecules and Genes Using In-Liquid Plasma

本田竜介, 佐々木渉太, 高島圭介, 神崎展, 佐藤岳彦, 金子俊郎

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　81st　2020

ISSN： 2436-7613
Numerical Analysis of the Active Species Dynamics between Discharge Plasma and Biological Surface

内田諭, 佐藤岳彦

東北大学流体科学研究所共同利用・共同研究拠点流体科学国際研究教育拠点活動報告書　2018　2020
Investigation of reaction behavior between reactive oxygen active species and membrane constituent molecules using quantum chemical calculation

戸田和希, 内田諭, 杤久保文嘉, 佐藤岳彦

応用物理学会春季学術講演会講演予稿集(CD-ROM)　67th　2020
プラズマ-生体界面における活性種挙動の大規模数値解析

内田諭, 佐藤岳彦

東北大学流体科学研究所共同利用・共同研究拠点流体科学国際研究教育拠点活動報告書　2017　2019
Formation and Measurement of Plasma Fine Bubbles

SATO Takehiko, KANAZAWA Seiji, OHTANI Kiyonobu, KOMIYA Atsuki, KANEKO Toshiro, NAKAJIMA Tomoki, TINGUELY Marc, FARHAT Mohamed, UEHARA Satoshi, KUMAGAI Ryo, MIYAHARA Takashi, OIZUMI Masanobu, NAKATANI Tatsuyuki, OCHIAI Shiroh, MIYAZAKI Takamichi, FUJITA Hidemasa

JAPANESE JOURNAL OF MULTIPHASE FLOW　33　(4)　382-389　2019
Publisher: THE JAPANESE SOCIETY FOR MULTIPHASE FLOW
DOI： 10.3811/jjmf.2019.T016 　

ISSN： 0914-2843

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<p>Fine bubbles generated by plasma in water that we named as "Plasma Fine Bubbles," have high potential to generate long-life ultrafine bubbles due to electrical charges. It is shown that the residual bubbles formed by collapse of streamer gas channels which show a similar process of cavitation bubbles in various points such as growth, shrink, collapse, rebound, and fragmentation. There are also introductions about ultrafine bubbles measured by a dynamic laser scattering method, amount of electrical charge of plasma fine bubbles estimated by analyzing their movements under application of an intense electric field strength, evidence of hydrogen gas generation in laser/spark induced bubbles and a distinguishing method for between gas bubbles and solid particles.</p>
液相中プラズマによる薬剤模擬分子導入の作用機序の探索

本田竜介, 佐々木渉太, 高島圭介, 神崎展, 佐藤岳彦, 金子俊郎

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　79th　ROMBUNNO.21a‐144‐3　2018/09/05

ISSN： 2436-7613
水中正ストリーマの生成・進展・スパーク・気泡膨張過程の連続的可視化

佐藤岳彦, 熊谷諒, 中嶋智樹, 矢野文彬

島津アプリケーションノート　46　1-5　2018/05
薬剤分子導入へ向けた液相中プラズマの電極構造の最適化

本田竜介, 佐々木渉太, 高島圭介, 神崎展, 佐藤岳彦, 金子俊郎

応用物理学会春季学術講演会講演予稿集(CD-ROM)　65th　ROMBUNNO.19p‐C201‐11　2018/03/05

ISSN： 2436-7613
Control of Cell Function Using Gas-Liquid Interfacial Plasmas -Toward Minimally-Invasive and Highly-Efficient Plasma Drug Molecule Transfer-

金子俊郎, 佐々木渉太, 本田竜介, 佐藤岳彦, 神崎展

表面と真空　61　(3)　143-149　2018/03

DOI： 10.1380/vss.61.143 　

ISSN： 2433-5835
分子動力学法を用いた細胞膜間への水チャネル形成による活性酸素種の膜内輸送特性解析

今井亮太, 内田諭, 杤久保文嘉, 佐藤岳彦

応用物理学会春季学術講演会講演予稿集(CD-ROM)　65th　2018
Recent Progress in Research on Discharge Mechanisms and Plasma Flow in Gas and Liquid Phases of Plasma Induced by Atmospheric Pressure Plasma

SATO Takehiko

Journal of Plasma and Fusion Research　93　(12)　573-579　2017/12
Characteristics of plasma in culture medium generated by positive pulse voltage and effects of organic compounds on its characteristics (vol 25, 2016)

Y. Sato, T. Sato, D. Yoshino

PLASMA SOURCES SCIENCE & TECHNOLOGY　26　(5)　2017/05

DOI： 10.1088/1361-6595/aa6212 　

ISSN： 0963-0252

eISSN： 1361-6595
細胞膜輸送に対する液相中プラズマの物理的・化学的刺激の効果

保苅雄太郎, 佐々木渉太, 神崎展, 佐藤岳彦, 金子俊郎

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　77th　ROMBUNNO.15p‐B7‐14　2016/09/01

ISSN： 2436-7613
連載講座「高度物理刺激と生体応答（１０）」第５章プラズマ刺激による細胞応答と応用その４－；連載終了に当たって

林信哉, 中谷達行, 佐藤岳彦

機械の研究　68　(5)　391-399　2016/05/01
Publisher: 養賢堂
ISSN： 0368-5713
液相微小プラズマを用いた接着細胞への薬剤分子導入

保苅雄太郎, 佐々木渉太, 神崎展, 佐藤岳彦, 金子俊郎

応用物理学会春季学術講演会講演予稿集(CD-ROM)　63rd　ROMBUNNO.21A-W621-6　2016/03/03

ISSN： 2436-7613
水中放電によるプラズマナノバブルの生成に関する研究

佐藤岳彦, 中谷達行, 宮原高志, 落合史朗, 大泉雅伸, 藤田英理, 宮崎孝道

岡山理科大学技術科学研究所年報　(34)　8-12　2016/02/15
Publisher: 岡山理科大学技術科学研究所
ISSN： 1349-4155
連載講座「高度物理刺激と生体応答（７）」第５章プラズマ刺激による細胞応答と応用その１

佐藤岳彦, 横山茉代, 城倉浩平, 金子俊郎, 佐々木渉太, 神崎展, 太田貴之

機械の研究　68　(2)　147-157　2016/02
Publisher: 株式会社養賢堂
ISSN： 0368-5713
Identification of Effective Reactive Species Generated by In-Liquid Plasma in Cell Membrane Permeability Enhancement

保苅雄太郎, 佐々木渉太, 神崎展, 佐藤岳彦, 金子俊郎

プラズマ・核融合学会年会(Web)　33rd　2016
Special Issue of the Eleventh International Conference on Flow Dynamics (ICFD2014) Preface

Takehiko Sato, Yuji Hattori, Tomohide Niimi, Hidemasa Takana, Takashi Tokumasu

JOURNAL OF FLUID SCIENCE AND TECHNOLOGY　11　(1)　2016

DOI： 10.1299/jfst.2016jfst0001 　

ISSN： 1880-5558
高度物理刺激と生体応答

佐藤岳彦, 大橋俊朗, 川野聡恭, 白樫了

日本機械学会誌　118　(1165)　50-50　2015/12/05
プラズマ処理水への暴露によるHeLa細胞の活性化・不活化応答

佐藤岳彦, 横山茉代, 城倉浩平

プラズマ・核融合学会誌　91　(12)　766-770　2015/12
Publisher: プラズマ・核融合学会
ISSN： 0918-7928
1104 Formation of directional microjet using underwater shock wave

MINAMI Tomoya, NAKAJIMA Tomoki, KANEKO Toshiro, SATO Takehiko

Fluids engineering conference ...　2015　"1104-1"-"1104-2"　2015/11/07
Publisher: The Japan Society of Mechanical Engineers
ISSN： 1348-0251

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Cavitation bubbles generated by an underwater shock wave formed microjets during the collapse and rebound process and they were visualized by a high-speed camera. The directions of the microjets showed the same direction of the initial shock wave propagation. These results imply that the direction of the microjets were affected by the compression wave not expansion wave which was generated by reflection at an interface between water and air.
プラズマによる殺菌作用

佐藤岳彦

電気学会技術報告　1350　11-13　2015/11
S0530405 Generation of a plasma flow at atmospheric pressure for sterilization

OKAZAKI Kazuki, NAKAJIMA Tomoki, FUJIMURA Shigeru, SATO Takehiko

Mechanical Engineering Congress, Japan　2015　"S0530405-1"-"S0530405-4"　2015/09/13
Publisher: The Japan Society of Mechanical Engineers

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In medical field, sterilization devices have been used to prevent surgical site infection. Sterilization is a method which eliminates microorganisms completely. In medical processes, common sterilization methods such as a high pressure stream, an ethylene oxide gas (EOG) and a hydrogen peroxide plasma have been utilized. However, heat damages by a high pressure stream, toxicity by EOG and high costs for a hydrogen peroxide plasma are disadvantages. Therefore, development of a new sterilization method with low temperature, rapid, safe and low-cost is demanded. Plasma has been expected as a novel sterilization method to solve the disadvantages mentioned above. Plasma can generate UV and reactive chemical species at low temperature and it is known that these stimuli generated by plasma have a biocidal effect. In this study, a sterilization device using atmospheric pressure plasma was developed for a practical application. This plasma device was able to generate reactive chemical species such as NOx and show good sterilization performance. To verify the completion of sterilization, biological indicators (BIs) which assure the sterility were used. In addition, plasma-induced flow with low temperature without gas feeding improved a sterilizing performance.
7・6・3 プラズマ流体(7・6 機能性流体,7.流体工学,<特集>機械工学年鑑)

佐藤岳彦, 高奈秀匡

日本機械学會誌　118　(1161)　472-472　2015/08/05
Publisher: 一般社団法人日本機械学会
ISSN： 0021-4728
機械工学年鑑，7. 流体工学

西山秀哉, 福西祐, 伊澤精一郎, 浅井圭介, 澤田恵介, 孫明宇, 祖山均, 石本淳, 山本悟, 伊賀由佳, 須藤誠一, 中野政身, 佐藤岳彦, 高奈秀匡, 徳増崇, 米村茂, 早瀬敏幸, 石川拓司

日本機械学会誌　118　(1161)　27-33　2015/08/05
Publisher: 日本機械学会
プラズマ流体

佐藤岳彦, 高奈秀匡

日本機械学会誌　118　(1161)　30-30　2015/08/05
連載講座「高度物理刺激と生体応答（１）」第１章高度物理刺激の生成法と計測・予測

佐藤岳彦, 金澤誠司, 浜口智志, 小宮敦樹

機械の研究　67　(8)　673-683　2015/08
Publisher: 株式会社養賢堂
ISSN： 0368-5713
307 Development and performance evaluation of a small plasma sterilization device

Kamiyama Hideto, Nakajim Tomoki, Fujimura Shigeru, Sato Takehiko

Symposium on Environmental Engineering　2015　(25)　115-117　2015/07/07
Publisher: The Japan Society of Mechanical Engineers

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Plasma sterilization has a potential as an alternative method against conventional sterilization methods because it enables to operate at low temperature and the cost is low. In this study, we developed a small size sterilization device using a contact lens case. The sterilization performance and plasma characteristics were investigated in air and water. Bacteria spores were sterilized in 20 min in air and in 120 min in water. The plasma generated NO_X which is considered as a main factor for the sterilization. The reason why the sterilization time was long is probably caused by that reactive species were transported by mainly diffusion.
大気圧プラズマ流への暴露による細胞応答

佐藤岳彦, 横山茉代, 城倉浩平

（社）日本機械学会部門協議会直属 P-SCC12「高度物理刺激と生体応答に関する研究分科会」成果報告書　185-187　2015/03
大気圧プラズマ流による細菌の殺滅

佐藤岳彦

クリーンテクノロジー　25　(2)　18-21　2015/02
Optimization of Micro-Plasma in Liquid for Drug-Molecules Transfer into Adherent Cell

保苅雄太郎, 佐々木渉太, 神埼展, 佐藤岳彦, 金子俊郎

プラズマ・核融合学会年会(Web)　32nd　2015
Biofilm産生Pseudomonas aeruginosaによるコンタクトレンズ汚染モデルに対するプラズマ殺菌法のメカニズムについて

中野禎久, 藤村茂, 佐藤岳彦, 吉野大輔, 渡辺彰

緑膿菌感染症研究会講演記録　48回　78-81　2014/12
Publisher: 緑膿菌感染症研究会
ISSN： 1340-6477
307 Generation of a low-temperature plasma flow for cell exposure

Okazaki Kazuki, Sato Takehiko, Yoshino Daisuke

Symposium on Environmental Engineering　2014　(24)　99-100　2014/11/17
Publisher: The Japan Society of Mechanical Engineers

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Cold plasma has been remarked for medical applications since it is capable of inactivating cancer cells and bacteria with lower cost and harmless to living body. In this study, a device of a low temperature plasma flow without gas feeding was developed, and its characteristics were investigated. Inactivated regions of HeLa cells were localized by exposure to the plasma flow. The localization may be caused by the effect of plasma-generated chemical species transported by the plasma flow.
1312 Generation of Microjet Using Underwater Shock Wave

MINAMI Tomoya, SATO Takehiko, NAKAJIMA Tomoki, YOSHINO Daisuke, KANEKO Toshiro

Fluids engineering conference ...　2014　"1312-1"-"1312-2"　2014/10/25
Publisher: The Japan Society of Mechanical Engineers
ISSN： 1348-0251

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Cavitation bubbles were generated by an underwater shock wave and formation of microjets in the collapse process were visualized by a high-speed camera. The directions of the microjets showed the same direction of the initial shock wave propagation. These results imply that the direction of the microjets were affected by the compression wave not expansion wave which was generated by reflection at an interface between water and air.
1305 Highly temporal analysis of underwater streamers with a streak camera

FUJITA Hidemasa, KANAZAWA Seiji, OHTANI Kiyonobu, KOMIYA Atsuki, KANEKO Toshiro, SATO Takehiko

Fluids engineering conference ...　2014　"1305-1"-"1305-2"　2014/10/25
Publisher: The Japan Society of Mechanical Engineers
ISSN： 1348-0251

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The highly temporal streak imaging of an underwater discharge revealed that the primary streamer propagation was intermittent though the propagation had been considered continuous from our previous study. In addition, the intermittent luminescence pattern was synchronized with the pattern of discharge pulsed currents. The primary streamer in ultrapure water was generated by the application of a single-shot pulsed positive high voltage with a duration of 10 μs to a needle-wire electrode system with the tip radius of 40 μm and with the gap distance of 6 mm.
プラズマによる農作物の鮮度保持・加工

清水一男, 内田諭, 佐藤岳彦, 大嶋孝之, 南谷靖史, 太田貴之

プラズマ・核融合学会誌小特集プラズマの農業利用　90　(10)　587-594　2014/10

ISSN： 0918-7928
S0550403 Gas Flow Formation by Plasma Discharge at Air-Water Interface with Different Water Conductivities

SHIMIZU Tetsuji, KISHIMOTO Naoya, YOSHINO Daisuke, HARA Masashi, MORFILL Gregor, SATO Takehiko

Mechanical Engineering Congress, Japan　2014　"S0550403-1"-"S0550403-3"　2014/09/07
Publisher: The Japan Society of Mechanical Engineers

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Cold atmospheric plasmas have a bactericidal effect as well as a "healing" effect on living tissues. These effects are due to the reactive species produced by the plasma discharges. It is important to understand the production and transport of these species. In this study, we focused on water flow formation by an atmospheric plasma discharge itself since living tissues are often covered by a liquid layer. Schlieren visualization technique was applied to visualize the flow formation in water. Water conductivity was changed to observe how the water conductivity affected on the flow formation. It is found that faster water flow was formed in the whole water region with lower water conductivity. This finding is important to optimize the effects on living tissues by the cold atmospheric plasma discharges.
232 Development of a plasma generation method in a culture medium and plasma irradiation to HeLa cells

Sato Yusuke, Sato Takehiko, Yoshino Daisuke

2014　(50)　51-52　2014/09/05
Publisher: The Japan Society of Mechanical Engineers
プラズマによる農業応用の基礎

高木浩一, 内野敏剛, 内田諭, 小田昭紀, 佐藤岳彦, 勝木淳

プラズマ・核融合学会誌小特集プラズマの農業利用　90　(9)　534-540　2014/09

ISSN： 0918-7928
大気圧プラズマ流の研究動向

佐藤岳彦

機械の研究　66　(6)　455-464　2014/06
Publisher: 養賢堂
ISSN： 0368-5713
Biofilm産生緑膿菌に対するプラズマ水面照射の殺菌効果と安全性について

中野禎久, 藤村茂, 渡辺彰, 佐藤岳彦

感染症学雑誌　88　(2)　255-256　2014/03
Publisher: (一社)日本感染症学会
ISSN： 0387-5911
150 Development of the generation method of micro underwater plasma for cell experiment

Masui Daiki, Yoshino Daisuke, Kanazawa Seiji, Kaneko Toshiro, Sato Takehiko

2014　(49)　97-98　2014
Publisher: The Japan Society of Mechanical Engineers
Basis of Plasma Applications for Agriculture

Koichi Takaki, Toshitaka Uchino, Satoshi Uchida, Akinori Oda, Takehiko Sato, Sunao Katsuki

Journal of Plasma and Fusion Research　90　(9)　534-540　2014
Biofilm産生Pseudomonas aeruginosaによるコンタクトレンズ汚染モデルに対するプラズマ間接殺菌法の効果

中野禎久, 藤村茂, 佐藤岳彦, 渡辺彰

緑膿菌感染症研究会講演記録　47回　119-123　2013/12
Publisher: 緑膿菌感染症研究会
ISSN： 1340-6477
113 Development of sterilization method by air plasma

NAKAMURAYA Kazuhiro, YOSHINO Daisuke, NAKAJIMA Tomoki, SATO Takehiko

2013　(49)　25-26　2013/09/20
Publisher: The Japan Society of Mechanical Engineers
S021013 Effects of Hydrostatic Pressure on Cell Cycle Dynamics of Endothelial Cells

YOSHINO Daisuke, SATO Kakeru, SATO Takehiko

Mechanical Engineering Congress, Japan　2013　"S021013-1"-"S021013-3"　2013/09/08
Publisher: The Japan Society of Mechanical Engineers

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Hydrostatic pressure treatment has already been in widespread clinical use for promoting wound healing.Although angiogenesis of blood capillary may become a main factor for promoting wound healing,effects of hydrostatic pressure on angiogenesis are still unclear.In this study,we focus on the cell cycle of endothelial cells after applying hydrostatic pressure,and discuss the effects of hydrostatic pressure on endothelial functions associated with angiogenesis.Human umbilical vein endothelial cells(HUVECs) were used in this study.HUVECs were exposed to ±50 mmHg by volume compression and expansion of the media for 6,12,and 24 hours.After pressure exposure,the cells were harvested from the dish,then the cell cycle was analyzed using a flow cytometer.The cell cycle,which remained at rest in consequence of contact inhibition in HUVECs,was forcibly driven by the hydrostatic pressure.After exposure to the hydrostatic pressure,the rate of cells in S and G2/M phases increased up to twice from that in the static condition.These results suggest that the expression of cell cycle-related proteins such as cyclin D1 were encouraged by changes in the hydrostatic pressure.
S052012 Driving mechanism of gas flow by gaseous-liquid plasma

SATO Takehiko, KISHIMOTO Naoya, SHIMIZU Tetsuji, Gregor Morfill

Mechanical Engineering Congress, Japan　2013　"S052012-1"-"S052012-2"　2013/09/08
Publisher: The Japan Society of Mechanical Engineers

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Gas-liquid plasmas for medical treatments have been developed and it includes many physical phenomena such as discharge, flow dynamics, chemical transport and heat transfer. Thermal flow field induced by a gas-liquid plasma is one of the important phenomenon though the mechanism of the flow drive was not clarified yet. In this study, we focused revealing the effect of directions of electric fields on the direction of the induced flow experimentally. It was found that the direction of the electric field govern the formation of the gas flow.
326 Characteristics of Chemical Species Generated by a Gas-Liquid Plasma Flow Using a Wire Electrode

HARA Masashi, YOSHINO Daisuke, SATO Takehiko

Symposium on Environmental Engineering　2013　(23)　252-253　2013/07/09
Publisher: The Japan Society of Mechanical Engineers

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Gas-liquid plasma flow has received a great deal of attention because it is easy to make a synergistic effect of chemical reactions in gas phase and gas-liquid interface. As biological applications generally require low temperature and low heat transport, we have developed wire-water discharge system and studied characteristics of thermal flow and chemical transport. We focused on temperature rise, pH, conductivity, and concentrations of ozone and nitrogen dioxide.
311 Development of sterilization method by air plasma using circulating flow

NAKAMURAYA Kazuhiro, YOSHINO Daisuke, NAKAJIMA Tomoki, SATO Takehiko

Symposium on Environmental Engineering　2013　(23)　208-209　2013/07/09
Publisher: The Japan Society of Mechanical Engineers

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Medical instruments are generally sterilized by high pressure steam, ethylene oxide gas (EOG), or gamma radiation. However, high pressure steam needs higher than 121 ℃ and 2 atm, the EOG has a toxic consequence and takes long time for an operation. In addition, the cost of gamma radiation is high. Therefore we focus on sterilization using plasma. Plasma sterilization can sterilize a wide range of materials jn ambient temperature. In this study, we develop the sterilization device by air plasma using circulating flow, and evaluate the efficiency of the device by using biological indicators.
315 Characteristics of cold plasma flow for viral inactivation

Kudo Yuji, Okamoto Michiko, Sato Takehiko, Yoshino Daisuke, Suzuki Akira, Oshitani Hitoshi

Symposium on Environmental Engineering　2013　(23)　220-221　2013/07/09
Publisher: The Japan Society of Mechanical Engineers

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In recent years, pandemic outbreak due to a mutation of virus is paid close attention as a big problem that may collapse social order. Generally, the methods for preventing and healing disease by the virus depend on medical agents s uch as the vaccine or antiviral drug. However, the vaccine and antiviral drug could be poorly supplied when the pandemic occurred. Plasma has been proven to be capable of sterilizing bacteria and expected to inactivate the virus. In this study, we focused on the effect of chemical species generated by plasma flow on influenza viruses.
Killing of Bacteria by Plasma Flow at Atmospheric Pressure

SATO Takehiko

37　(3)　127-131　2013/05/31
Publisher: 静電気学会
ISSN： 0386-2550
143 Process of Primary Streamer Propagation in Water

FUJITA Hidemasa, KANAZAWA Seiji, OHTANI Kiyonobu, Komiya Atsuki, SATO Takehiko

2013　(48)　88-89　2013/03/15
Publisher: The Japan Society of Mechanical Engineers
1D12 Functional response of HeLa cells by exposure to plasma-treated culture medium

SATO Takehiko, YOKOYAMA Mayo, JOHKURA Kohei

2013　(25)　133-134　2013/01/08
Publisher: The Japan Society of Mechanical Engineers
Biofilm産生グラム陰性桿菌に対するプラズマ間接殺菌法の効果

中野禎久, 藤村茂, 渡辺彰, 佐藤岳彦

感染症学雑誌　87　(1)　138-138　2013/01
Publisher: (一社)日本感染症学会
ISSN： 0387-5911
Streamer Propagation Process of Plasma in Water

FUJITA Hidemasa, SATO Takehiko, KANAZAWA Seiji, OHTANI Kiyonobu, KOMIYA Atsuki

2012　(107)　21-24　2012/12/10
Biofilm産生Pseudomonas aeruginosaとAcinetobactor baumanniiに対するプラズマ照射法の殺菌効果

中野禎久, 藤村茂, 佐藤岳彦, 渡辺彰

緑膿菌感染症研究会講演記録　46回　96-99　2012/12
Publisher: 緑膿菌感染症研究会
ISSN： 1340-6477
S055012 Visualization of a streamer propagation process in water

SATO Takehiko, FUJITA Hidemasa, KANAZAWA Seiji, OHTANI Kiyonobu, KOMIYA Atsuki

Mechanical Engineering Congress, Japan　2012　"S055012-1"-"S055012-2"　2012/09/09
Publisher: The Japan Society of Mechanical Engineers

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A series of photographs for a streamer propagation process in water was successfully observed using a nano-pulse discharge system, an ultra high speed camera system with a microscope lens and a phase shift type Mach-Zehnder interferometer. After the initiation process of 600 ns - 800 ns from the applying voltage of 16 kV_<0p> - 17.5 kV_<0p>, a primary streamer occurred. It accompanied with a shock wave and the period of the propagation was several hundred ns. The propagation velocity of the primary streamer was around 1.5 km/s.
Analysis of thermal flow field and chemical transport of atmospheric plasma generated above water

SATO Takehiko, IWAFUCHI Yutaka, SHIMIZU Tetsuji, MORFILL Gregor E.

2012　(49)　21-24　2012/08/08
307 Inactivation of MDCK cell viability by exposure to plasma

Kudo Yuji, Suziki Akira, Sato Takehiko, Oshitani Hitoshi

Symposium on Environmental Engineering　2012　(22)　205-206　2012/07/03
Publisher: The Japan Society of Mechanical Engineers

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Influenza pandemic is one of the biggest threats to not only human being but also other living beings, such as birds and cows. Air cleaners using plasma have been commercialized and expec ted to prevent infection of virus, although their effect has not been verified yet. Plasma has been proven to be capable of sterilizing pathogenic bacteria with low temperature, low cost and safely, but the effect of plasma on virus inactivation has not been known yet because the authorized verification protcol for plasma inactivation method has not been established. At present, a method to transmit the virus to cells is used as an inspection method. To apply this inspection method to the verification protocol, it is necessary to examine the influence of the plasma on cell viability.In this study, we focused on how the chemical species generated by a plasma flow have effects on viability of MDCK cells, which will be used as a host cell.
309 Processes of Streamer Propagation in Water

Fujita Hidemasa, Kanazawa Seiji, Otani Kiyonobu, Komiya Atsuki, Sato Takehiko

Symposium on Environmental Engineering　2012　(22)　209-210　2012/07/03
Publisher: The Japan Society of Mechanical Engineers

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A continuous photograph of a streamer propagation process in water was successfully observed using a nano-pulse discharge system, an ultra high speed camera system with a microscope lens and a phase shift type Mach-Zehnder interferometer. After the initiation process of 600 ns - 800 ns from the applying voltage of 16 kV0p-17.5 kV0p, a primary streamer was occurred. It accompanied with a shock wave and the period of the propagation was several hundred ns. The propagation velocity of the primary streamer was around 1.5 km/s.
308 Verification of sterilization factor by atmospheric discharges

Ishida Masayuki, Sato Takehiko

Symposium on Environmental Engineering　2012　(22)　207-208　2012/07/03
Publisher: The Japan Society of Mechanical Engineers

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Medical equipments are generally sterilized by high pressure steam and ethylene oxide gas methods which allow a large amount of instruments in a vessel to be sterilized at once. However, high pressure steam needs more than 121°C and 2 atm, and the ethylene oxide gas is a toxic substance and takes about one week for aeration. Therefore, development of new sterilization method with safety, low-temperature・ and lower cost is expected. Plasma sterilization devices are considered to be possible to operate with low-temperature, shorter time, low-cost and safety. In this study, plasma sterilization methods in air at atmospheric pressure have been developed. In the case of air, the spores of Geobacillus stearot加rmophilus were sterilized with 5 log scale reduction in 10 min, and it was clarified that the important sterilization factor is NO2 using a NO2 mixed argon gas.
プラズマ医療：熱流体からバイオ・医療までを融合する新領域

佐藤岳彦

伝熱　216　(216)　70-77　2012/07
Publisher: 日本伝熱学会
ISSN： 1344-8692
213 Temperature dependence of streamer propagation in water

FUJITA Hidemasa, KANAZAWA Seiji, SATO Takehiko

2012　(47)　232-233　2012/03/13
Publisher: The Japan Society of Mechanical Engineers
Simulation of gas phase reaction in atmospheric plasma

KAMBARA Shinji, SATO Takehiko, KOMURO Atsushi, ONO Ryo, ODA Tetsuji, TAKANA Hidemasa, NOZAKI Tomohiro, OKUNO Yasuyuki, SUGIMOTO Kazuya, EHADO Syoichi

電気学会研究会資料. PST, プラズマ研究会　2011　(71)　91-91　2011/12/15
プラズマ医療と流体工学

佐藤岳彦

日本機械学会流体工学部門ニューズレター　12　2011/12
プラズマ気泡生成法の開発

佐藤岳彦, 中谷達行

東北大学流体科学研究所共同利用・共同研究拠点流体科学研究拠点活動報告書　2010　83-84　2011/10
大気圧プラズマ流による化学種生成輸送機構と滅菌機構

佐藤岳彦

日本学術振興会「プラズマ照射による医療用品の滅菌、エンドトキシンならびにプリオン不活化法と応用」に関する研究開発専門委員会報告書　116-119　2011/09
313 Thermal flow analysis of a plasma flow at atmospheric pressure in air and water

Sato Takehiko, Iwafuchi Yutaka, Shimizu Tetsuji, Morfill Gregor

Symposium on Environmental Engineering　2011　(21)　206-207　2011/06/29
Publisher: The Japan Society of Mechanical Engineers

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An atmospheric plasma discharge was produced between a platinum pin electrode and the surface of water. The thermal flow field of the cold atmospheric plasma in air and water was measured experimentally and analyzed computationally. A gas flow with a velocity of around 15 m/s was shown to be generated toward the water surface by the discharge. This air flow induced a circulating flow in the water from the discharge point at the water surface due to friction. These results were also predicted computationally.
302 Development of sterilization method by an atmospheric discharge

Ishida Masayuki, Sato Takehiko

Symposium on Environmental Engineering　2011　(21)　177-178　2011/06/29
Publisher: The Japan Society of Mechanical Engineers

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Sterilization device using an atmospheric pressure discharge has been expected as a next-generation sterilization method due to easy handling, low cost and safety. In the present study, we generated plasmas in air and water vapor. The sterilization of spores of Geobacillus stearothermophilus was completed in the air plasma for 40 min-discharge and the water vapor plasma for 180 min-discharge, respectrively. In the case of air plasma, NOx were considered as one of sterilization factors since NOx were observed by a spectrum analysis. This result implies that sterilization in the air plasma at atmospheric pressure has a good performance as a sterilization device.
What I Though in the Great East Japan Earthquake

SATO Takehiko

35　(3)　95-95　2011/05/31

ISSN： 0386-2550
Interference mechanism between an atmospheric plasma flow and liquid

Reports of Toyoda Physical and Chemical Research Institute.　(64)　121-124　2011/05
Publisher: 豊田理化学研究所
ISSN： 0372-039X
101 Development of plasma sterilization device

Ishida Masayuki, SATO Takehiko

2011　(46)　6-7　2011/03/15
Publisher: The Japan Society of Mechanical Engineers
9J-11 Influence of chemical species generated by atmospheric plasma on cell

SATO Takehiko, YOKOYAMA Mayo, JOHKURA Kohei

2010　(23)　495-496　2011/01/07
Publisher: The Japan Society of Mechanical Engineers
プラズマ滅菌

佐藤岳彦

静電気学会誌　33　(4)　137-141　2009/10
大気圧プラズマ流による滅菌技術の開発

佐藤岳彦

クリーンテクノロジー　19　(8)　41-45　2009/08
Publisher: 日本工業出版
I：低温プラズマ流, 1-(1) 大気圧プラズマ流の研究動向と医療分野への展開

佐藤岳彦

日本機械学会流体工学部門ニューズレター「特集：大気圧プラズマ流」　2007/12
プラズマ流体の機能力学と先端応用（特集：機能性流体）

西山秀哉, 佐藤岳彦

日本実験力学会誌「実験力学」　7　(3)　205-212　2007/09
7・3・1 プラズマ流体(7・3 機能性流体, 7.流体工学,<特集>創立110周年記念機械工学年鑑)

西山秀哉, 佐藤岳彦

日本機械学會誌　110　(1065)　593-593　2007/08/05
Publisher: 一般社団法人日本機械学会
ISSN： 0021-4728
プラズマ流体

西山秀哉, 佐藤岳彦

日本機械学会誌「機械工学年鑑特集号」　110　(1065)　592　2007/08
大気圧非平衡プラズマ流による滅菌システムの開発（トピックス）

佐藤岳彦

日本機械学会誌　110　(1063)　472-472　2007/06
Publisher: 一般社団法人日本機械学会
ISSN： 0021-4728
Numerical simulation of upwelling flow in pipe generated by perpetual salt fountain Peer-reviewed

Sato T, Maruyama S, Komiya A, Tsubaki K

Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC　394-397　2007
821 Sterilization mechanism of Escherichia coli by a low temperature atmospheric plasma flow(1)

Sato Takehiko, Miyahara Takashi, Ochiai Shiroh, Doi Akiko, Urayama Takuya, Nakatani Tatsuyuki

Fluids engineering conference ...　2006　"821-a"　2006/10/28
Publisher: The Japan Society of Mechanical Engineers
ISSN： 1348-2882
Natural convective Heat Transfer from Vertical Baffled Plate with Oscillation

T. Sato, S. Maruyama, A. Komiya

Third International Conference on Flow Dynamics　199　(200)　2006
305 VOC decomposition by an atmospheric nonequilibrium plasma flow and the process analysis

SATO Takehiko, KAMBE Makoto, NISHIYAMA Hideya

Symposium on Environmental Engineering　2005　(15)　233-234　2005/07/06
Publisher: The Japan Society of Mechanical Engineers

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In this study, experimental and numerical analyses have been adopted to clarify the key radical of the VOC decomposition process. In experimental analysis, it is clarified that the DBD system decompose the methanol and styrene completely. Those characteristics are also numerically analyzed using conservation equations of mass, chemical component, momentum and energy. In numerical analysis, it is suggested that OH is an important radical to decompose the methanol.
プラズマ流と粒子－相互作用を観る－

T. Sato

溶射 (日本溶射協会誌)　39　(2)　65-71　2002/04
万物流転－粒子が皮膜になるまで－

T. Sato

溶射 (日本溶射協会誌)　38　(3)　176-177　2001/07

ISSN： 0916-6076
(8) 電磁場下の管内微粒子プラズマ流の数値シミュレーション

佐藤岳彦, 西山秀哉

日本機械学會誌　104　(990)　261-261　2001/05/05
Publisher: 一般社団法人日本機械学会
ISSN： 0021-4728
プラズマ流体と磁気粘性流体の知的制御に関する研究

西山秀哉, 佐藤岳彦, 小山忠正

大学・高専・研究機関の研究情報　9　12-13　1999/03
Publisher: （財）宮城県高度技術振興財団
プラズマで守る生活環境

西山秀哉, 佐藤岳彦

文部省科研費研究成果公開発表「流れを科学する」　1999/03
Publisher: 文部省

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Books and Other Publications 15

Plasma Technologies for Industrial Innovation

2023/04/28

ISBN: 9784781317335
Fundamentals and Industrial Applications of Foam Formation and Antifoaming

2022/09/30

ISBN: 9784781316772
Plasma Medical Science

Toshiro Kaneko, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Masanori Tachikawa, Hiroyasu Kanetaka, Takehiko Sato, Michael G. Kong

Elsevier　2018
第4章プラズマ刺激 4.3 細胞・植物の応答 4.3.1 プラズマ照射培養液に曝露したHeLa細胞の応答

佐藤岳彦, 横山茉代, 城倉浩平

（株）養賢堂出版　2017/08
第4章プラズマ刺激 4.1 はじめに

佐藤岳彦

（株）養賢堂出版　2017/08
第1章緒論 1.1 生体への刺激の種類と生体応答の概説

佐藤岳彦

（株）養賢堂出版　2017/08
第4章医療・バイオ・農業への応用 1 プラズマ殺菌

佐藤岳彦

（株）シーエムシー出版　2017/07
第2編プラズマ反応シミュレーションの実際: 第4章 CFD-ACE+について

西田哲, 佐藤岳彦

（株）エヌ・ティー・エス　2013/07
第1編大気圧プラズマ反応工学の基礎: 第3章流体の基礎

佐藤岳彦

（株）エヌ・ティー・エス　2013/07
大気圧プラズマの熱流体連成解析

崎山幸紀, 佐藤岳彦

（株）シーエムシー出版　2011/07
溶射工学便覧

佐藤岳彦

日本溶射協会　2010/01/25
大気圧プラズマ基礎と応用

佐藤岳彦

オーム社　2009/10/15
The 21st Century COE Program, International COE of Flow Dynamics, Lecture Series Vol.12, Nano-Mega Scale Flow Dynamics in Complex Systems

Hideya Nishiyama, Takehiko Sato, Michio Tokuyama, Toshiaki Ikohagi, Yasuaki Kohama, Jun Ishimoto

Tohoku University Press　2008/03
Thermal Plasma Torches and Technologies, Vol. 2, Thermal Plasma and Applied Technologies Research and Developments, Concept of an Intelligent Integrated Plasma Laboratory for Studying Basic Phenomena in Plasma Spraying

Oleg P. Solonenko, Hideya Nishiyama, Takehiko Sato, Andrey V. Smirnov

Cambridge International Science Publishing　2001/08
Thermal Plasma Torches and Technologies, Vol. 2, Thermal Plasma and Applied Technologies Research and Developments, Magnetic Control Simulation of In-Flight Particle Characteristics in an Impinging Dusty Plasma Jet

Hideya Nishiyama, Masakatsu Kuzuhara, Masakazu Shiozawa, Takehiko Sato, Oleg P. Solonenko

Cambridge International Science Publishing　2001/08

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Presentations 449

Innovations in Water Utilization Using High-Speed Nanodroplets Invited

Takehiko Sato

Special Seminar at ETH Zürich　2025/06/17
Water Use Innovation through High-Speed Nanodroplets and Pressure Measurement of Cavitation Bubbles Invited

Takehiko Sato

Special Seminar at EPFL　2025/06/16
Investigation of Underwater Discharge Phenomena and Shock Wave Regulation International-presentation

Siwei Liu, Tomoki Nakajima, Takehiko Sato

XI International Symposium on Electrohydrodynamics 2025 (ISEHD2025)　2025/06/13
Charged Phenomenon of High-Speed Nanodroplet Impact on the Copper Plate International-presentation International-coauthorship

Jiun-Shian Lee, Yun-Chien Cheng, Toshiyuki Sugimoto, Siwei Liu, Tomoki Nakajima, Takehiko Sato

XI International Symposium on Electrohydrodynamics 2025 (ISEHD2025)　2025/06/12
Visualization of Electrohydrodynamic Convection Cells in a Phase Change Material Using Schlirien Imagery International-presentation International-coauthorship

Ethan Chariandy, Siwei Liu, Takehiko Sato, James Cotton

XI International Symposium on Electrohydrodynamics 2025 (ISEHD2025)　2025/06/11
Water Use Innovation through High-Speed Nanodroplets and the Mechanism of Plasma-Induced Gas–Liquid Flow Invited

Takehiko Sato

Special Lecture at McMaster University　2025/06/04
Scattering emission spectroscopy of fine particles International-presentation

Takuro Okuma, Siwei Liu, Tomoki Nakajima, Takehiko Sato

The 8th Japan-Taiwan Workshop on Plasma Leading Science and Technology (8th JTPL 2024)　2024/12/14
Current Induced by High-speed Nanodroplets Impinging on Copper Plate International-presentation International-coauthorship

Jiun-Shian Lee, Yun-Chien Cheng, Siwei Liu, Tomoki Nakajima, Takehiko Sato

The 8th Japan-Taiwan Workshop on Plasma Leading Science and Technology (8th JTPL 2024)　2024/12/14
Pressure measurement inside a laser-induced cavitation bubble using plasma discharge International-coauthorship

2024/11/19
Schlieren Imagery of Low Frequency AC Voltage EHD of Phase Change Materials International-presentation International-coauthorship

Ethan Chariandy, James S. Cotton, Takehiko Sato, Siwei Liu

The 24th International Symposium on Advanced Fluid Information (AFI2024)　2024/11/20
Pressure Measurement in Laser-Induced Cavitation Bubble Using Discharge Characteristics International-presentation International-coauthorship

The 24th International Symposium on Advanced Fluid Information (AFI2024)　2024/11/20
Generation of High-Speed Ultrafine Droplets and Droplets Characteristics International-presentation

Takehiko Sato, Seiji Kanazawa, Kosuke Tachibana, Siwei Liu, Tomoki Nakajima

The 24th International Symposium on Advanced Fluid Information (AFI2024)　2024/11/20
Electric Current Measurement of Nanodroplets Generated by Condensation of Water Vapor with High-speed Flow International-presentation International-coauthorship

Jiun-Shian Lee, Yun-Chien Cheng, Siwei Liu, Tomoki Nakajima, Takehiko Sato

The 24th International Symposium on Advanced Fluid Information (AFI2024)　2024/11/20
Membrane Permeation Characteristics of Reactive Oxygen Species under Cold Atmospheric Pressure Plasma Irradiation International-presentation

Satoshi Uchida, Yuki Iijima, R. Tanaka, Ryo Ninomiya, Yuto Ninagawa, Ippei Yagi, Kosuke Tachibana, Akinori Oda, Takehiko Sato

The 24th International Symposium on Advanced Fluid Information (AFI2024)　2024/11/20
Development of a Plasma-Liquid Interfacial Reactor on a Microfluidic Chip International-presentation

Hiroyuki Yoshiki, Akihiro Enta, Tomoki Nakajima, Takehiko Sato

The 24th International Symposium on Advanced Fluid Information (AFI2024)　2024/11/20
Experiment and Molecular Dynamics Simulation for Plasma-Dependent Interface International-presentation

Kosuke Tachibana, Siwei Liu, Satoshi Uchida, Tomoki Nakajima, Takehiko Sato

The 24th International Symposium on Advanced Fluid Information (AFI2024)　2024/11/20
Gas Component Identification for Laser-Induced Cavitation Bubbles International-presentation International-coauthorship

The 24th International Symposium on Advanced Fluid Information (AFI2024)　2024/11/20
Application of High-Speed Nanodroplets to Cleaning and Sterilization Treatments International-presentation

Takehiko Sato, Shigeru Fujimura, Seiji Kanazawa, Siwei Liu, Kosuke Tachibana, Yun-Chien Cheng, Jiun-Shian Lee, Takuro Okuma, Keisuke Iwasawa, Yunchen Xiao, Tomoki Nakajima

The 21st International Conference on Flow Dynamics (ICFD2024)　2024/11/18
Towards Advanced Control and Application of Charged Cavitation for Biomedicine International-presentation

Siwei Liu, Tomoki Nakajima, Takehiko Sato

The 21st International Conference on Flow Dynamics (ICFD2024)　2024/11/18
Effect of High-Speed Water Nanodroplets on Cell Response International-presentation

Keisuke Iwasawa, Siwei Liu, Tomoki Nakajima, Takehiko Sato

The 21st International Conference on Flow Dynamics (ICFD2024)　2024/11/18
Innovation in water use pioneered by high-speed nanodroplets: Cleaning and sterilization without wet and with low-temperature and high water-saving International-presentation Invited

Takehiko Sato

Special Lecture　2024/11/13
Charging Phenomena of the High-speed Nanodroplets Impinging on a Copper Plate International-presentation International-coauthorship

Jiun-Shian Lee, Yun-Chien Cheng, Takuro Okuma, Siwei Liu, Tomoki Nakajima, Takehiko Sato

The 17th International Conference on Electrostatic Precipitation (XVII ICESP Japan)　2024/10/30
Generation of High-Speed Nanodroplets and the Cleaning Effect International-presentation

Takehiko Sato, Shigeru Fujimura, Seiji Kanazawa, Siwei Liu, Tomoki Nakajima, Yunchen Xiao

The Nanobubble 2024　2024/10/10
絶縁油中帯電レーザー誘起気泡の特性 International-coauthorship

栗原輝太, 劉思維, 中島智樹, Outi Supponen, Mohamed Farhat, 佐藤岳彦

日本機械学会東北支部第60期秋季講演会　2024/09/28
ファインバブルによる水中パルス放電の発生効率への影響

前田優希, 高田凌佑, 高橋克幸, 高木浩一, 上田義勝, 佐藤岳彦

第48回静電気学会全国大会　2024/09/11
電気的に等量のプラズマが生成する化学および電気刺激に対する細胞応答

中山愛理, 劉思維, 矢野憲一, 中嶋智樹, 佐藤岳彦

第48回静電気学会全国大会　2024/09/11
プラズマを用いた農業に関するレビュー

浦島邦子, 高橋克幸, 高木浩一, 佐藤岳彦

第48回静電気学会全国大会　2024/09/11
Flow of water vapor in a vessel with a cooling surface

2024/07/18
Influence of fine bubble on generation efficiency of pulsed discharge underwater International-presentation

Yuki Maeda, Ryosuke Takada, Katsuyuki Takahashi, Koichi Takaki, Yoshikatsu Ueda, Takehiko Sato

International Young Electrostatic Scholar Symposium for Convergence Technology 2024 (I-YES 2024)　2024/07/06
Energy-efficiency improvement of plasma-induced shock waves International-presentation International-coauthorship

Siwei Liu, Yi Liu, Yijia Ren, Tomoki Nakajima, Takehiko Sato

The 1st Asian Symposium for Building Future of Plasma (1st ASBFP)　2024/07/06
Electric Current Induced by Impact of High-speed Nanodroplets on a Copper Plate International-presentation International-coauthorship

Jiun-Shian Lee, Yun-Chien Cheng, Takuro Okuma, Siwei Liu, Tomoki Nakajima, Takehiko Sato

International Young Electrostatic Scholar Symposium for Convergence Technology 2024 (I-YES 2024)　2024/07/05
Gas Component Identification for Laser-Induced Cavitation Bubbles International-presentation International-coauthorship

Siwei Liu, Kaito Nitto, Outi Supponen, Tomoki Nakajima, Mohamed Farhate, Takehiko Sato

The 51st IEEE International Conference on Plasma Science & The 4th Asia-Pacific Conference on Plasma and Terahertz Science (ICOPS & APCOPTS 2024)　2024/06/19
革新的水利用技術：高速ナノ液滴が拓く「超節水・薬剤フリー・濡れない」殺菌・洗浄 Invited

佐藤岳彦

第14回MaSC技術交流会 Real Exchange “ナノスケールのバブルとミストの先端科学とその応用”　2024/04/22
微粒子の散乱光分光

大熊拓郎, 劉思維, 中嶋智樹, 金澤誠司, 佐藤岳彦

日本機械学会東北支部第59期総会・講演会　2024/03/15
「濡れない・薬剤フリー・超節水」洗浄・殺菌技術が拓く革新的水利用社会 Invited

佐藤岳彦

未来のくらしと水の科学研究会第13回定例研究会（公開シンポジウム）　2024/01/31
プラズマファインバブル Invited

佐藤岳彦

2023年度静電気学会九州支部・放電プラズマによる水処理研究委員会合同研究会第502回生存圏シンポジウム（第5回プラズマ・ファインバブル研究会）　2023/12/08
Effect of Charge Distribution on the Plasma-induced Fine Bubble Dynamics International-presentation International-coauthorship

Siwei Liu, Outi Supponen, Tomoki Nakajima, Takehiko Sato

23rd International Symposium on Advanced Fluid Information (AFI2023)　2023/11/08
Production of Laser-induced Bubbles in Water-oil System International-presentation International-coauthorship

Kouta Kurihara, Siwei Liu, Tomoki Nakajima, Kiyonobu Ohtani, Mohamed Farha, Takeniko Sato

23rd International Symposium on Advanced Fluid Information (AFI2023)　2023/11/07
Characteristics of High-speed Ultrafine Droplets International-presentation

Takehiko Sato, Seiji Kanazawa, Kosuke Tachibana, Siwei Liu, Tomoki Nakajima

23rd International Symposium on Advanced Fluid Information (AFI2023)　2023/11/07
Electrical Characteristics of High-speed Mists International-presentation International-coauthorship

Yun-Chien Cheng, Takehiko Sato

23rd International Symposium on Advanced Fluid Information (AFI2023)　2023/11/07
Permeation Characteristics of Long-lifetime Reactive Oxygen Species through Biological Membranes under Superimposed Electric Field Generated by the Irradiation of Cold Atmospheric Pressure Plasma International-presentation

Satoshi Uchida, K. Takami, Ryo Ninomiya, Ippei Yagi, Kosuke Tachibana, A. Oda, Takehiko Sato

23rd International Symposium on Advanced Fluid Information (AFI2023)　2023/11/07
Heat Transfer Enhancement of Phase Change Material under the Application of an Oscillating Electric Field International-presentation International-coauthorship

Ethan Chariandy, James S. Cotton, Takehiko Sato, Siwei Liu, Tomoki Nakajima

23rd International Symposium on Advanced Fluid Information (AFI2023)　2023/11/08
Observation of Laser-Induced Optical Breakdown and Its Application in Biomedicine International-presentation

Siwei Liu, Keisuke Iwasawa, Airi Nakayama, Tomoki Nakajima, Takehiko Sato

20th International Conference on Flow Dynamics (ICFD2023)　2023/11/06
Development of innovative sterilization method by high-speed nanodroplets International-presentation

Takehiko Sato, Shigeru Fujimura, Seiji Kanazawa, Yunchen Xiao, Tomoki Nakajima, Siwei Liu

7th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL7, TJPL2023　2023/10/28
Influence of fine bubble on generation efficiency of pulsed discharge underwater International-presentation

Yuki Maeda, Ryosuke Takada, Katsuyuki Takahashi, Koichi Takaki, Yoshikatsu Ueda, Takehiko Sato

7th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL7, TJPL2023)　2023/10/27
Cellular Response to Plasma-generated Electrical and Chemical Stimulation International-presentation

Airi Nakayama, Tomoki Nakajima, Siwei Liu, Takehiko Sato

7th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL7, TJPL2023)　2023/10/27
Observation of an Atmospheric-Pressure Microplasma Flow using Schlieren Method International-presentation

Hiroyuki Yoshiki, Kenji Otosaka, Ryota Nishimura, Tomoki Nakajima, Satoshi Uehara, Takehiko Sato

7th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL7, TJPL2023)　2023/10/27
水中プラズマによるファインバブル生成 Invited

佐藤岳彦

第511回生存圏シンポジウム・第9回ファインバブル学会連合シンポジウム　2023/10/18
Initiation and propagation mechanisms of underwater streamers International-presentation Invited

Takehiko Sato, Hidemasa Fujita, Ryo Kumagai, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Tomoki Nakajima, Toshiro Kaneko

76th Annual Gaseous Electronics Conference (GEC2023)　2023/10/12
水蒸気中の不凝縮ガスリアルタイム計測法の開発

橘洋司, 劉思維, 中嶋智樹, 忰田正浩, 佐藤岳彦

第47回静電気学会全国大会　2023/09/11
Real time measurement of non-condensable gas in water vapor International-presentation

Takehiko Sato, Yoji Tachibana, Siwei Liu, Tomoki Nakajima, Masahiro Kaseda

International Workshop on Environmental Engineering 2023 (IWEE2023)　2023/07/26
革新的水利用技術：高速ナノ液滴が拓く「超節水・薬剤フリー・濡れない」殺菌・洗浄 Invited

佐藤岳彦

東北大学新技術説明会　2023/07/11
Plasma-enhanced Degradation of Chlorinated Compounds International-presentation

Siwei Liu, Tomoki Nakajima, Takehiko Sato

25th International Symposium on Plasma Chemistry (ISPC25)　2023/05/25
Generation of spark-induced bubble and its dependence on conductivity International-presentation International-coauthorship

Siwei Liu, Tomoki Nakajima, Yijia Ren, Yi Liu, Takehiko Sato

7th International Symposium on Plasma & Fine Bubbles to Agriculture and Aquaculture (7th ISPFB 2023)　2023/05/19
高速ナノ液滴噴流の特性と細胞への影響

岩澤慶祐, 中嶋智樹, 劉思維, 佐藤岳彦

日本機械学会東北支部第58期総会・講演会　2023/03/17
革新的水利用技術：高速ナノ液滴が拓く「超節水・薬剤フリー・濡れない」殺菌・洗浄 Invited

佐藤岳彦

未来のくらしと水の科学研究会第8回定例研究会 (グリーンインフラ産業展公開シンポジウム)　2023/02/02
Effect of electrical conductivity of water on bubble generation by underwater discharge

2022/11/13
Visualization of Collapse Processes of Laser-Induced Cavitation Bubble International-presentation International-coauthorship

Marc Tinguely, Kiyonobu Ohtani, Mohamed Farhat, Takehiko Sato

22nd International Symposium on Advanced Fluid Information (AFI-2022)　2022/11/11
Schlieren Visualization of Phase Change Material Heat Transfer Enhancement under the Application of Electrohydrodynamics International-presentation International-coauthorship

Ethan Chariandy, Siwei Liu, Tomoki Nakajima, Takehiko Sato, James S. Cotton

Schlieren Visualization of Phase Change Material Heat Transfer Enhancement under the Application of Electrohydrodynamics　2022/11/11
Characteristics of High-speed Ultrafine Mist Flow International-presentation

Yunchen Xiao, Seiji, Kanazawa, Tomoki Nakajima, Siwei Liu, ○Takehiko Sato

22nd International Symposium on Advanced Fluid Information (AFI-2022)　2022/11/10
The Effects of Atmospheric-Pressure Cold Plasma Generated Electrical Field, Short-Life Species, and Long-Life Species on Cancer Cells International-presentation International-coauthorship

Po-Chien Chien, Chao-Yu Chen, Takehiko Sato, Yun-Chien Cheng

22nd International Symposium on Advanced Fluid Information (AFI-2022)　2022/11/10
Numerical Analysis of Changes in Transport Properties in Biological Membranes due to Plasma-Induced Charges and Electric Fields International-presentation

Yuta Iwata, Kosuke Takami, Satoshi Uchida, Takehiko Sato

22nd International Symposium on Advanced Fluid Information (AFI-2022)　2022/11/10
Corona Discharge-induced Air Flow Control for Environmental and Biological Applications International-presentation International-coauthorship

Seiji Kanazawa, Taiga Mitsui, Takashi Furuki, Kosuke Tachibana, Ryuta Ichiki, Takehiko Sato, Marek Kocik, Jerzy Mizeraczyk

19th International Conference on Flow Dynamics (ICFD2022)　2022/11/09
Effect of Plasma-generated Electrical and Chemical Stimulation on HT-1080 Cells International-presentation

Airi Nakayama, Tomoki Nakajima, Siwei Liu, Takehiko Sato

19th International Conference on Flow Dynamics (ICFD2022)　2022/11/09
プラズマを模擬したナノ秒パルス電流刺激による細胞応答 Invited

Takehiko Sato

2022年度静電気学会東北・関西・九州支部合同研究会, 第482回生存圏シンポジウム（プラズマ・ナノバブル研究会）　2022/10/28
Deepening of the Study of Corona Discharges by Recent Advances of Electrical and Optical Measurement Techniques International-presentation International-coauthorship

Seiji Kanazawa, Taiga Mitsui, Akihito Kuno, Takashi Furuki, Kosuke Tachibana, Ryuta Ichiki, Takehiko Sato, Marek Kocik, Jerzy Mizeraczyk

The 16th International Conference on Electrostatic Precipitation (ICESP2022)　2022/10/28
Development of Gene Transfection Method Using Combined Plasma and Pulsed Electric Field in Liquid International-presentation

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

75th Annual Gaseous Electronics Conference (GEC2022)　2022/10/05
Changes in the permeation characteristics of ROS through biological membranes by discharge plasma-Induced electric field International-presentation

Yuta Iwata, Ippei Yagi, Kosuke Tachibana, Akinori Oda, Takehiko Sato, Satoshi Uchida

75th Annual Gaseous Electronics Conference (GEC2022)　2022/10/04
Propagation processes of underwater streamers International-presentation Invited

Takehiko Sato, Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko

National Conference on Recent Developments and Evolving Trends in Plasma Science and Technology & Pre-Conference Workshop on Modelling and Simulation of Industrial Plasmas　2022/09/23
Generation of high-speed mist by condensed water vapor aiming at a novel cleaning technology

Siwei Liu, Yunchen Xiao, Tomoki Nakajima, Seiji Kanazawa, Takehiko Sato

2022/09/09
コロナ放電の計測自動化と統計処理 International-coauthorship

三井大雅, 古木貴志, 立花孝介, 市來龍大, 金澤誠司, 佐藤岳彦, Marek Kocik, Jerzy Mizeraczyk

第46回静電気学会全国大会　2022/09/09
Improvement of underwater plasma generation efficiency using fine bubbles

2022/09/09
Degradation of Chlorinated Compounds by Treatment of Repetitive Plasma Discharges International-presentation

Siwei Liu, Tomoki Nakajima, Takehiko Sato

12th International Symposium on Nonthermal/Thermal Plasma Pollution Control Technology and Sustainable Energy & International Symposium on Electrohydrodynamics 2022 (ISNTP-12 and ISEHD 2022)　2022/09/02
Corona Discharge and the Induced-EHD Gas Flow under Repetitive Ramp and Triangular Voltage Applications International-presentation International-coauthorship

Seiji Kanazawa, Taiga Mitsui, Takashi Furuki, Kosuke Tachibana, Ryuta Ichiki, Takehiko Sato, Marek Kocik, Jerzy Mizeraczyk

12th International Symposium on Nonthermal/Thermal Plasma Pollution Control Technology and Sustainable Energy & International Symposium on Electrohydrodynamics 2022 (ISNTP-12 and ISEHD 2022)　2022/08/31
Formation of post-collapse bubbles of laser- or spark-induced bubbles International-presentation International-coauthorship

Takehiko Sato, Marc Tinguely, Masanobu Oizumi, Mohamed Farhat

The International Symposium on Plasma & Fine Bubbles (ISPFB2022)　2022/08/22
Residual non-condensable gas near cooling pipe in water vapor

2022/07/07
Improvement of underwater plasma generation efficiency using fine bubbles

2022/05
Underwater streamers induced by microsecond pulsed discharge with bi-polarities International-coauthorship

Siwei Liu, Yi Liu, Takehiko Sato

2022/03/01
Modeling of Spark Channel of Microsecond Pulsed Discharge in Water International-presentation International-coauthorship

Siwei Liu, Yi Liu, Takehiko Sato

12th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-12)　2021/12/11
Formation and Measurement of Plasma Fine Bubbles International-presentation International-coauthorship Invited

Takehiko Sato, Satoshi Uehara, Ryo Kumagai, Takashi Miyahara, Masanobu Oizumi, Tatsuyuki Nakatani, Shiroh Ochiai, Takamichi Miyazaki, Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Marc Tinguely, Mohamed Farhat

12th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-12)　2021/12/10
Automatic measurement of corona discharge characteristics using ramp and triangular voltages International-coauthorship

2021/12/05
Observation of flow field generated by corona discharge using the Schlieren method International-coauthorship

2021/12/05
プラズマを模擬した電気刺激に対する細胞応答 Invited

張家興, 矢野憲一, 奥村賢直, 佐藤岳彦

第38回プラズマ・核融合学会年会　2021/11/23
水中プラズマにより生成された微細気泡の残留消滅過程

佐藤岳彦, 熊谷諒, 中嶋智樹

日本機械学会第99期流体工学部門講演会　2021/11/08
Polarity Effects of Plasma-Induced Stimuli on Cell Viability International-presentation

Airi Nakayama, Honoka Taguchi, Chia-Hsing Chang, Tomoki Nakajima, Siwei Liu, Takehiko Sato

18th International Conference on Flow Dynamics (ICFD2021)　2021/10/29
Electrohydrodynamics (EHD): the next generation thermal management technology International-presentation International-coauthorship

James S. Cotton, Takehiko Sato

21st International Symposium on Advanced Fluid Information (AFI-2021)　2021/10/29
Science of Ultrafine Droplet and High Speed Impact International-presentation

Takehiko Sato, Masao Watanabe, Takeru Yano, Yuka Iga, Kazumichi Kobayashi, Atsuki Komiya, Hidemasa Takana, Kiyonobu Ohtani, Junnosuke Okajima, Kenichi Funamoto, Yunchen Xiao, Tomoki Nakajima, Siwei Liu

21st International Symposium on Advanced Fluid Information (AFI-2021)　2021/10/29
An Innovative Method of Generating Plasma Microbubbles in Flowing Water International-presentation International-coauthorship

Mu-Chien Wu, Satoshi Uehara, Tomoki Nakajima, Takehiko Sato, Jong-Shinn Wu

21st International Symposium on Advanced Fluid Information (AFI-2021)　2021/10/29
Pressure Measurement in Laser-Cavitation Bubbles International-presentation International-coauthorship

Satoshi Uehara, Sayaka Kamata, Tomoki Nakajima, Yuka Iga, Seiji Kanazawa, Mohamed Farhat, Takehiko Sato

21st International Symposium on Advanced Fluid Information (AFI-2021)　2021/10/29
The Effects of Atmospheric-pressure Cold Plasma Generated Electrical Field, Short-life Species, and Long-life Species on Cancer Cells International-presentation International-coauthorship

Po-Chien Chien, Chao-Yu Chen, Takehiko Sato, Yun-Chien Cheng

21st International Symposium on Advanced Fluid Information (AFI-2021)　2021/10/29
Numerical Simulations of Membrane Deformation Induced by Cold Atmospheric Plasma with Circuit Analysis and Molecular Dynamics International-presentation

Yuta Iwata, Shota Yamauchi, Yuya Oishi, Ippei Yagi, Satoshi Uchida, Takehiko Sato

21st International Symposium on Advanced Fluid Information (AFI-2021)　2021/10/28
Simulation and experiment analysis of shock wave induced by underwater pulsed discharge International-coauthorship

Siwei Liu, Yi Liu, Yijia Ren, Takehiko Sato

2021/09/21
Activation of Ion Channel and Uptake of Extracellular Dye Induced by In-liquid Plasma Treatment International-presentation

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

8th International Conference on Plasma Medicine (ICPM8)　2021/08/06
Compact Atmospheric Plasma Sterilization Device for Contact Lenses International-presentation Invited

Takehiko Sato, Kazuki Okazaki, Hideto Kamiyama, Koki Oikawa, Kairi Muramatsu, Tomoki Nakajima, Shigeru Fujimura, Toshikatsu Nagasawa, Tatsuyuki Nakatani

8th International Conference on Plasma Medicine (ICPM8)　2021/08/05
Investigation of Chemical and Electrical Factors Induced by Double Plasmas on Cancer Cells International-presentation

Chia-Hsing Chang, Honoka Taguchi, Ken-ichi Yano, Takehiko Sato

8th International Conference on Plasma Medicine (ICPM8)　2021/08/04
Development of measurement method for non-condensable gas in water vapor

Takehiko Sato, Tomoki Nakajima, Kento Horiuchi, Siwei Liu, Takeru Yano

2021/07/08
Influencing Factors on Microsecond-pulsed Discharge Mode in Water International-presentation

5th International Symposium on Application of High-Voltage, Plasma & Micro/Nano (Fine) Bubbles to Agriculture, Aquaculture and Food Safety (ISHPMNB2021)　2021/05/13
Generation of water vapor condensing mist

2021/03/12
Analysis of Influencing Factors on Discharge Mode of Water Under Microsecond High Current Pulse International-coauthorship

Siwei Liu, Yi Liu, Yijia Ren, Takehiko Sato

2021年度 (第22回) 静電気学会春季講演会　2021/03/02
Discharge and flow field characteristics measured by a new measurement method for corona discharge generated in needle-to-plate electrode system International-coauthorship

Takahiro KOSHIISHI, Taiga MITSUI, Takashi FURUKI, Kosuke TACHIBANA, Ryuta ICHIKI, Seiji KANAZAWA, Takehiko SATO, Jerzy MIZERACZYK

2021/03/02
水中プラズマによる気泡生成過程と計測 Invited

佐藤岳彦

日本学術振興会産学協力研究委員会「水の先進理工学」第183委員会第58回研究会　2021/02/18
レーザー誘起気泡中の圧力測定 International-coauthorship

上原聡司, 佐藤岳彦, 鎌田さやか, 中嶋智樹, 金澤誠司, 伊賀由佳, ファーラットモハメッド

日本機械学会第98期流体工学部門講演会　2020/11/12
Nanosecond Pulsed Current Under Plasma-producing Conditions Induces Morphological Alterations in Human Fibrosarcoma Cells International-presentation Invited

Chia-Hsing Chang, Ken-ichi Yano, Takehiko Sato

17th International Conference on Flow Dynamics (ICFD2020)　2020/10/30
Liquid Discharge Characteristics Under Exposure to Ultraviolet-rays for Observation of Hydrated Electron International-presentation

Siwei Liu, Yunchen Xiao, Satoshi Uehara, Tomoki Nakajima, Takehiko Sato

17th International Conference on Flow Dynamics (ICFD2020)　2020/10/30
Comparison of the Concentration of Reactive Chemical Species in Water by Plasma Jet and Plasma-activated Microbubbles Jet International-presentation International-coauthorship

Mu-Chien Wu, Satoshi Uehara, Takehiko Sato, Tomoki Nakajima, Jong-Shinn Wu

17th International Conference on Flow Dynamics (ICFD2020)　2020/10/30
Development of Analyzing Method for Cancer Cell Migration Using Long-term Time-lapse International-presentation

Hayato Tada, Satoshi Uehara, Chia-Hsing Chang, Takehiko Sato

17th International Conference on Flow Dynamics (ICFD2020)　2020/10/30
Science of Ultrafine Droplet and High Speed Impact International-presentation

Takehiko Sato, Masao Watanabe, Takeru Yano, Yuka Iga, Kazumichi Kobayashi, Toshiyuki Hayase, Jun Ishimoto, Makoto Ohta, Atsuki Komiya, Hidemasa Takana, Kiyonobu Ohtani, Junnosuke Okajima, Satoshi Uehara, Suguru Miyauchi, Hitomi Anzai

20th International Symposium on Advanced Fluid Information (AFI-2020)　2020/10/28
Improvement of Pressure Measurement Method in a Laser-Induced Cavitation Bubble International-presentation

Satoshi Uehara, Sayaka Kamata, Tomoki Nakajima, Yuka Iga, Seiji Kanazawa, Takehiko Sato

20th International Symposium on Advanced Fluid Information (AFI-2020)　2020/10/28
Characteristics of Jetting from Micro Cavitation Bubbles International-presentation International-coauthorship

Satoshi Uehara, Takahito Akimura, Tomoki Nakajima, Kiyonobu Ohtani, Outi Supponen, Mohamed Farhat, ○Takehiko Sato

20th International Symposium on Advanced Fluid Information (AFI-2020)　2020/10/28
Numerical Analyses of Transport Characteristics of Discharge Species Generated by Cold Atmospheric Plasma on Cell Membrane using Fluid Model and Molecular Dynamics International-presentation

Shota Yamauchi, Kazuaki Abe, Yuya Oishi, Ippei Yagi, Satoshi Uchida, Takehiko Sato

20th International Symposium on Advanced Fluid Information (AFI-2020)　2020/10/28
The Effects of Atmospheric-pressure Cold Plasma Generated Electrical Field, Short-life Species, and Long-life Species on Cancer Cells International-presentation International-coauthorship

Po-Chien Chien, C. Y. Chen, Takehiko Sato, Yun-Chien Cheng

20th International Symposium on Advanced Fluid Information (AFI-2020)　2020/10/28
Concentration Enhancement of Reactive Chemical Species by Plasma-activated Microbubbles Jet in a Water Recirculation System International-presentation International-coauthorship

Mu-Chien Wu, Satoshi Uehara, Tomoki Nakajima, Takehiko Sato, Jong-Shinn Wu

20th International Symposium on Advanced Fluid Information (AFI-2020)　2020/10/28
Experimental Observation on Characteristics of High-Speed Mist International-presentation

Yunchen Xiao, Siwei Liu, Tomoki Nakajima, Takehiko Sato

17th International Conference on Flow Dynamics (ICFD2020)　2020/10/28
電気刺激によるヒト繊維肉腫細胞の間葉系運動の活性化

張家興, 矢野憲一, 佐藤岳彦

第44回静電気学会全国大会　2020/09/24
ランプ電圧および三角波電圧を用いたコロナ放電の新規計測法による放電特性 International-coauthorship

輿石昂宏, 古木貴志, 立花孝介, 市來龍大, 金澤誠司, 佐藤岳彦, Jerzy Mizeraczyk

第44回静電気学会全国大会　2020/09/24
誘導電流観測による沿面放電の諸特性調査

二階堂慎一, 杉本俊之, 佐藤岳彦

第44回静電気学会全国大会　2020/09/24
帯電した絶縁フィルムの表面で起こる沿面放電の誘導電流観測

二階堂慎一, 杉本俊之, 佐藤岳彦

2020年度電気関係学会東北支部連合大会　2020/08/27
高速流を用いたプラズママイクロバブル生成デバイスによる水質浄化 International-coauthorship

Mu-Chien Wu, 上原聡司, 中嶋智樹, Chia-Hsing Chang, Jong-Shinn Wu, 佐藤岳彦

第30回環境工学総合シンポジウム2020（中止）　2020/06/24
小型密閉型大気圧プラズマ水中滅菌装置の開発

佐藤岳彦, 村松海里, 中嶋智樹, 藤村茂

第30回環境工学総合シンポジウム2020（中止）　2020/06/24
分割接地電極を用いた沿面放電進展時の誘導電流観測

二階堂慎一, 杉本俊之, 佐藤岳彦

令和２年電気学会全国大会（中止）　2020/03/11
プラズマ誘導性細胞応答における電荷の生理的意義の解析

Chia-Hsing Chang, 佐藤岳彦

熊本大学パルスパワー科学研究所令和元年度共同研究成果報告会（中止）　2020/03/10
Effects of Plasma-generator-supplied Pulsed Current on Cell Behavior and Morphology using a Timelapse Monitoring International-presentation

Chia-Hsing Chang, Hayato Tada, Ken-ichi Yano, Takehiko Sato

11th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-11)　2019/12/13
An Innovative Method of Generating Plasma Microbubbles in a Flowing Water Tube International-presentation International-coauthorship

Mu-Chien Wu, Satoshi Uehara, Tomoki Nakajima, Chia-Hsing Chang, Jong-Shinn Wu, Takehiko Sato

11th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-11)　2019/12/12
Investigation of the key factor(s) for molecule introduction by in-liquid plasma treatment

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

第29回日本MRS年次大会（C: プラズマライフサイエンス）　2019/11/27
Nano-Pulsed Current Plays a Critical Role in Plasma Treatment on Fibrosarcoma Cells International-presentation

Chia-Hsing Chang, Kenichi Yano, Takehiko Sato

Sixteenth International Conference on Flow Dynamics (ICFD2019)　2019/11/08
Active Control of Corona Discharge Process for Environmental and Biological Applications International-presentation Invited

Seiji Kanazawa, Kosuke Tachibana, Takashi Furuki, Ryuta Ichiki, Takehiko Sato, Jerzy Mizeraczyk

Sixteenth International Conference on Flow Dynamics (ICFD2019)　2019/11/08
Science of Ultrafine Drop and High Speed Impact International-presentation

Takehiko Sato, Masao Watanabe, Takeru Yano, Yuka Iga, Kazumichi Kobayashi, Toshiyuki Hayase, Jun Ishimoto, Makoto Ohta, Atsuki Komiya, Hidemasa Takana, Kiyonobu Ohtani, Junnosuke Okajima, Satoshi Uehara, Suguru Miyauchi, Hitomi Anzai

Nineteenth International Symposium on Advanced Fluid Information (AFI2019)　2019/11/07
Fluid flow analysis of an atmospheric-pressure microplasma ejected from a narrow nozzle International-presentation

Hiroyuki Yoshiki, Kenji Otosaka, Takehiko Sato, Tomoki Nakajima, Satoshi Uehara

Nineteenth International Symposium on Advanced Fluid Information (AFI2019)　2019/11/07
Influence of Electric Potential Induced by Atmospheric Pressure Plasma on Cell International-presentation

Takamasa Okumura, Chia-Hsing Chang, Takehiko Sato

Nineteenth International Symposium on Advanced Fluid Information (AFI2019)　2019/11/07
Development of Pressure Measurement Method in a Laser-Induced Cavitation Bubble International-presentation

Satoshi Uehara, Sayaka Kamata, Tomoki Nakajima, Yuka Iga, Seiji Kanazawa, Takehiko Sato

Nineteenth International Symposium on Advanced Fluid Information (AFI2019)　2019/11/07
Measurement of Electrical Charge in Fine Bubbles Generated by Plasma in Water International-presentation

Takehiko Sato, Ryo Kumagai, Satoshi Uehara, Tomoki Nakajima, Kiyonobu Ohtani, Takashi Miyahara, Tatsuyuki Nakatani

Nineteenth International Symposium on Advanced Fluid Information (AFI2019)　2019/11/07
Characteristics of Jetting from Micro Cavitation Bubbles Under Multiple Pressure Waves International-presentation

Satoshi Uehara, Takahito Akimura, Tomoki Nakajima, Kiyonobu Ohtani, Outi Supponen, Mohamed Farhat, Takehiko Sato

Nineteenth International Symposium on Advanced Fluid Information (AFI2019)　2019/11/07
Large-scale numerical analysis of discharge active species behavior at plasma-biological interface International-presentation

Satoshi Uchida, Kazuki Toda, Atsushi Kokubu, Shota Yamauchi, Kazuaki Abe, Takehiko Sato

Nineteenth International Symposium on Advanced Fluid Information (AFI2019)　2019/11/07
The sterilization effect against Staphylococcus aureus and Pseudomonas aeruginosa on the contact lens using the Ultraviolet C irradiation International-presentation

Shigeru Fujimura, Toshikatsu Nagasawa, Masato Kawamura, Takumi Sato, Takehiko Sato

31st International Congress of Antimicrobial Chemotherapy & 4th Gulf Congress of Clinical Microbiology & Infectious Diseases　2019/11/06
A new measurement method of corona-discharge characteristics using repetitive ramp voltage International-presentation

Kosuke Tachibana, Yoshihiro Sudo, Takashi Furuki, Ryuta Ichiki, Seiji Kanazawa, Takehiko Sato, Jerzy Mizeraczyk

4th ISNPEDADM 2019 (New electrical technologies for environment)　2019/10
帯電した絶縁膜表面の水分層が沿面放電の進展に及ぼす効果

二階堂慎一, 杉本俊之, 佐藤岳彦

第43回静電気学会全国大会　2019/09/13
針―水面放電に伴う水中電荷の挙動

佐藤旭, 上原聡司, 清水鉄司, 佐藤岳彦

第43回静電気学会全国大会　2019/09/12
Propagation mechanism and formation process of fine bubbles by underwater plasma streamer International-presentation Invited

Takehiko Sato

2nd Joint Workshop on Bio-medical Sensor Network between NCTU and Tohoku Univ.　2019/08/23
In-Solution Type Plasma Device for Highly-Efficient Drug Transfer International-presentation

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

XXXIV International Conference on Phenomena in Ionized Gases (XXXIV ICPIG) and the 10th International Conference on Reactive Plasmas (ICRP-10)　2019/07/18
Quantum chemical analysis on oxidation of membrane constituent molecules by plasma irradiation International-presentation

Kazuki Toda, Satoshi Uchida, Yusuke Nakagawa, Fumiyoshi Tochikubo, Takehiko Sato

XXXIV International Conference on Phenomena in Ionized Gases (XXXIV ICPIG) and the 10th International Conference on Reactive Plasmas (ICRP-10)　2019/07/18
Spectroscopic measurement of needle discharge in pure water International-presentation

Satoshi Uehara, Haruki Ishizuka, Takehiko Sato

XXXIV International Conference on Phenomena in Ionized Gases (XXXIV ICPIG) and the 10th International Conference on Reactive Plasmas (ICRP-10)　2019/07/16
Measurements of Reactive Chemical Species in Atmospheric-Pressure Corona Plasma Activated Water International-presentation

Mu-Chien Wu, Jui-Chun Ku, Chih-Chia Lee, Shih-Sen Huang, Jong-Shinn Wu

The 6th Japan-Taiwan Workshop on Plasma Life Science and Technology (JTPL2019)　2019/07/12
Reduction of nitrogen oxides concentration in plasma sterilization International-presentation

Kairi Muramatsu, Takehiko Sato, Tomoki Nakajima, Toshikatsu Nagasawa, Tatsuyuki Nakatani, Shigeru Fujimura

The 6th Japan-Taiwan Workshop on Plasma Life Science and Technology (JTPL2019)　2019/07/12
Plasma-generator-supplied Nanosecond Pulsed Current Induces Fibrosarcoma Cells to Mesenchymal Type by Actin Polymerization International-presentation

Chia-Hsing Chang, Kenichi Yano, Takehiko Sato

The 6th Japan-Taiwan Workshop on Plasma Life Science and Technology (JTPL2019)　2019/07/12
Visualization of thermal flow in liquid medium by high-Frequency pulsed gas-liquid phase discharge International-presentation

Yuto Oba, Shuto Tamura, Takamasa Okumura, Tomoki Nakajima, Takehiko Sato

The 6th Japan-Taiwan Workshop on Plasma Life Science and Technology (JTPL2019)　2019/07/12
Fluid analysis of and atmospheric-pressure μplasma ejected from a narrow nozzle International-presentation

Kenji Otosaka, Hiroyuki Yoshiki, Tomoki Nakajima, Takehiko Sato, Satoshi Uehara

The 6th Japan-Taiwan Workshop on Plasma Life Science and Technology (JTPL2019)　2019/07/12
Analysis of cell mobility and morphology change on pulse current discharge application International-presentation

Satoshi Uehara, Hayato Tada, Chia-Hsing Chang, Takehiko Sato

The 6th Japan-Taiwan Workshop on Plasma Life Science and Technology (JTPL2019)　2019/07/12
The molecule introduction into cells by in-liquid plasma irradiation and investigation of the key factor for introduction International-presentation

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

The 6th Japan-Taiwan Workshop on Plasma Life Science and Technology (JTPL2019)　2019/07/12
Effect of nitrogen oxides on ozone sterilization of spores International-presentation

Koki Oikawa, Takehiko Sato, Tomoki Nakajima, Toshikatsu Nagasawa, Shigeru Fujimura, Tatsuyuki Nakatani

International Workshop on Environmental Engineering 2019 (IWEE2019)　2019/06/27
Spectroscopic measurement of streamer discharge in water for water purification International-presentation

Satoshi Uehara, Haruki Ishizuka, Takehiko Sato

International Workshop on Environmental Engineering 2019 (IWEE2019)　2019/06/27
Development of electrodes for air plasma sterilization International-presentation

Kairi Muramatsu, Takehiko Sato, Tomoki Nakajima, Toshikatsu Nagasawa, Shigeru Fujimura, Tatsuyuki Nakatani

International Workshop on Environmental Engineering 2019 (IWEE2019)　2019/06/27
Investigation of Nanosecond Pulsed Current Induced Reorganization of the Cytoskeleton International-presentation

Chia-Hsing Chang, Kenichi Yano, Takehiko Sato

International Workshop on Environmental Engineering 2019 (IWEE2019)　2019/06/27
Development of analysis method of cell movement International-presentation

Hayato Tada, Chia-Hsing Chang, Satoshi Uehara, Takehiko Sato

International Workshop on Environmental Engineering 2019 (IWEE2019)　2019/06/27
Plasma-generator-supplied Nanosecond Pulsed Current Effects on Fibrosarcoma Cells International-presentation

Chia-Hsing Chang, Ken-ichi Yano, Takehiko Sato

24th International Symposium on Plasma Chemistry (ISPC24)　2019/06/11
電界刺激による細胞応答のタイムラプス観察

多田隼都, 張家興, 上原聡司, 中嶋智樹, 矢野憲一, 佐藤岳彦

日本機械学会東北支部第54期総会・講演会　2019/03/12
Influence of Nanosecond Pulsed Current on HT-1080 Cells

Chia-Hsing Chang, Takehiko Sato

2019/03/07
表面電位計を用いた放電に伴う水中電荷量計測

上原聡司, 佐藤旭, 清水鉄司, 佐藤岳彦

2019年度静電気学会春期講演会　2019/03/04
Stable Generation of In-Liquid Plasma and Its Application to Local Drug Transfer International-presentation

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

36th Symposium on Plasma Processing (SPP36)　2019/01/16
Generation of Fine Bubbles by Underwater Plasma Discharge International-presentation Invited

Takehiko Sato, Ryo Kumagai, Takashi Miyahara, Masanobu Oizumi, Tatsuyuki Nakatani, Shiroh Ochiai, Takamichi Miyazaki, Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Marc Tinguely, Mohamed Farhat

28th Annual Meeting of MRS-Japan 2018, Symposium C-2: Plasma Life Science　2018/12/19
Development of Gas-Liquid Interfacial Plasma Devices for Medical and Agricultural Applications International-presentation

Toshiro Kaneko, Shota Sasaki, Keisuke Takashima, Ryosuke Honda, Kenji Nihei, Makoto Kanzaki, Takehiko Sato

5th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL2018)　2018/12/15
Propagation process of underwater negative streamer International-presentation

Ryo Kumagai, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

5th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL2018)　2018/12/15
Development of non-contact measurement on charge behavior in water associated with needle-water discharge International-presentation

Akira Sato, Satoshi Uehara, Tomoki Nakajima, Takehiko Sato

5th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL2018)　2018/12/14
Effect of exposure to electrical pulse current on cell response International-presentation

Chia-Hsing Chang, Kenichi Yano, Takehiko Sato

5th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL2018)　2018/12/14
Surface potential and charge transfer of needle-water discharge for different applied voltage International-presentation

Satoshi Uehara, Akira Sato, Takehiko Sato

5th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL2018)　2018/12/14
Propagation mechanism of underwater streamer and formation of fine bubbles International-presentation Invited

Takehiko Sato

Lecture at National Chiao Tung University　2018/12/13
Atmospheric Pressure Plasma Flow for Bio-medical Applications International-presentation Invited

Takehiko Sato

Technical Workshop of Biomedical Sensor and Network Project in International Joint Research Laboratory between NCTU and Tohoku Univ　2018/11/30
HT-1080 Cell Response to Nanosecond Pulsed Current Modeled after Atmospheric Pressure Plasma International-presentation

Chia-Hsing Chang, Ken-ichi Yano, Takehiko Sato

15th International Conference on Flow Dynamics (ICFD2018)　2018/11/09
Directional control of micro-jets from cavitation bubbles subject to multiple pressure waves International-presentation

Takahito Akimura, Tomoya Minami, Outi Supponen, Tomoki Nakajima, Satoshi Uehara, Kiyonobu Ohtani, Toshiro Kaneko, Mohamed Farhat, Takehiko Sato

18th International Symposium on Advanced Fluid Information (AFI-2018)　2018/11/08
Mechanism of propagation of underwater negative streamer International-presentation

Ryo Kumagai, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

18th International Symposium on Advanced Fluid Information (AFI-2018)　2018/11/08
The Effects of Atmospheric-pressure Cold Plasma Generated Short-life Species on A549 Cells International-presentation

Hamza H. S. Helal, Chao-Yu Chen, Po-Chien Chien, Chia-Hsing Chang, Jong-Shinn Wu, Takehiko Sato, Yun-Chien Cheng

18th International Symposium on Advanced Fluid Information (AFI-2018)　2018/11/08
Fluid flow analysis of an atmospheric-pressure micro-plasma ejected from a narrow nozzle International-presentation

Hiroyuki Yoshiki, Kenji Otosaka, Takehiko Sato, Tomoki Nakajima, Satoshi Uehara

18th International Symposium on Advanced Fluid Information (AFI-2018)　2018/11/08
針－水面放電に伴う水中電荷移動計測

上原聡司, 佐藤旭, 清水鉄司, 佐藤岳彦

2018年度第42回静電気学会全国大会　2018/09/14
プラズマ滅菌装置における放電電極の性能評価

村松海里, 佐藤岳彦, 中嶋智樹, 長沢敏勝, 藤村茂, 中谷達行

日本機械学会2018年度年次大会　2018/09/10
酸素プラズマ中の微量窒素酸化物による芽胞菌の不活化作用

及川港基, 佐藤岳彦, 中嶋智樹, 長沢敏勝, 藤村茂, 中谷達行

第28回環境工学総合シンポジウム2018　2018/07/12
Cell Response to Pulsed Current Modeled after Atmospheric Pressure Plasma International-presentation

Chia-Hsing Chang, Ken-ichi Yano, Takamasa Okumura, Takehiko Sato

7th International Conference on Plasma Medicine (ICPM-7)　2018/06/19
Introduction of drug simulated molecules into adherent cells using in-liquid plasmas International-presentation

Ryosuke Honda, Shota Sasaki, Keisuke Takashima, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

The 6th International Workshop and the 5th International Mini Workshop on Solution Plasma and Molecular Technology (SPM-6 and Mini SPM-5)　2018/06
水中負ストリーマの進展過程の可視化解析

熊谷諒, 金澤誠司, 大谷清伸, 小宮敦樹, 金子俊郎, 中嶋智樹, 佐藤岳彦

放電／プラズマ・パルスパワー合同研究会　2018/05/19
Formation process of fine bubbles by plasma in water International-presentation Invited

Takehiko Sato, Ryo Kumagai, Takashi Miyahara, Masanobu Oizumi, Tatsuyuki Nakatani, Shiroh Ochiai, Takamichi Miyazaki, Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Marc Tinguely, Mohamed Farhat

International Symposium on Application of High-voltage, Plasmas & Micro/Nano Bubbles (Fine Bubbles) to Agriculture and Aquaculture (ISHPMNB2018)　2018/05/11
Numerical Analysis on Charge Transfer and Potential Change in Water after Single Pulsed Discharge to the Water Surface International-presentation

Akira Sato, Kazuyuki Ueno, Takehiko Sato

International Symposium on Application of High-voltage, Plasmas & Micro/Nano Bubbles (Fine Bubbles) to Agriculture and Aquaculture (ISHPMNB2018)　2018/05/10
水中圧力波により生成されたキャビテーション気泡およびマイクロジェットの挙動の解析

秋村隆仁, 南共哉, 中嶋智樹, 大谷清伸, 金子俊郎, Mohamed Farhat, Outi Supponen, 佐藤岳彦

日本機械学会東北支部第53期総会・講演会　2018/03/15
マイクロジェット生成方向に対する水中圧力波の影響

秋村隆仁, 南共哉, 中嶋智樹, 大谷清伸, 金子俊郎, Outi Supponen, Mohamed Farhat, 佐藤岳彦

平成29年度衝撃波シンポジウム　2018/03/09
針－水面単一パルス放電による水中電位形成

奥村賢直, 周超一, 清水鉄司, 中嶋智樹, 佐藤岳彦

第19回静電気学会春期講演会　2018/03/05
Hydrogen gas generation in plasma-induced cavitation bubbles International-presentation Invited

Takehiko Sato, Marc Tinguely, Masanobu Oizumi, Mohamed Farhat

10th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT 2017)　2017/12/17
Micro-jets from microbubble clouds under the effect of traveling pressure waves International-presentation

Takahito Akimura, Tomoya Minami, Tomoki Nakajima, Kiyonobu Ohtani, Toshiro Kaneko, Outi Supponen, Mohamed Farhat, Takehiko Sato

10th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT 2017)　2017/12/16
Formation of Electric Potential in Liquid by Needle-Water Discharge International-presentation

Takamasa Okumura, Chaoyi Zhou, Eijiro Kubo, Tetsuji Shimizu, Tomoki Nakajima, Takehiko Sato

10th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT 2017)　2017/12/16
Effect of Pulsed Current on Cell Activity International-presentation

Chia-Hsing Chang, Kenichi Yano, Takamasa Okumura, Takehiko Sato

10th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT 2017)　2017/12/16
Effect of minute amount of nitrogen oxides in pure oxygen plasma on sterilization efficacy International-presentation

Koki Oikawa, Takehiko Sato, Tomoki Nakajima, Toshikatsu Nagasawa, Shigeru Fujimura, Tatsuyuki Nakatani

10th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT 2017)　2017/12/16
Reactive Flow Dynamics of Atmosperic Pressure Plasma Invited

Takehiko Sato, Naoya Kishimoto, Yutaka Iwafuchi, Gregor E. Morfill, Tetsuji Shimizu

Plasma Conference 2017 (PLASMA2017)　2017/11/23
Visualization of Pressure Field of Negative Discharge in Water International-presentation

Ryo Kumagai, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

17th International Symposium on Advanced Fluid Information (AFI-2017)　2017/11/02
Pressure Measurement of Traveling Pressure Waves for Cavitation Bubble Generation International-presentation

Takahito Akimura, Tomoya Minami, Tomoki Nakajima, Kiyonobu Ohtani, Toshiro Kaneko, Outi Supponen, Mohamed Farhat, Takehiko Sato

17th International Symposium on Advanced Fluid Information (AFI-2017)　2017/11/02
Potential Formation in Water by Cold Atmospheric Plasma International-presentation

Takamasa Okumura, Chaoyi Zhou, Eijiro Kubo, Tetsuji Shimizu, Tomoki Nakajima, Takehiko Sato

14th International Conference on Flow Dynamics (ICFD-2017)　2017/11/02
Large Scale Numerical Analysis of Reactive Oxygen Species Behavior at Plasma-Biological Interface International-presentation

Ryota Imai, Satoshi Uchida, Fumiyoshi Tochikubo, Takehiko Sato

17th International Symposium on Advanced Fluid Information (AFI-2017)　2017/11/02
Development of Bubble Measurement Method Using Pressure Wave International-presentation

Takehiko Sato, Yohei Nagasawa, Tomoki Nakajima, Kiyonobu Ohtani, Takashi Miyahara, Tatsuyuki Nakatani

17th International Symposium on Advanced Fluid Information (AFI-2017)　2017/11/02
Effect of Pressure Wave on Direction of Cavitation Bubble Microjets International-presentation

Takahito Akimura, Tomoya Minami, Tomoki Nakajima, Kiyonobu Ohtani, Toshiro Kaneko, Outi Supponen, Mohamed Farhat, Takehiko Sato

The 9th JSME-KSME Thermal and Fluids Engineering Conference (TFEC9)　2017/10/29
コンタクトレンズ用プラズマ殺菌装置の開発

佐藤岳彦, 神山秀人, 中嶋智樹, 長沢敏勝, 藤村茂, 中谷達行

第41回静電気学会全国大会　2017/09/12
大気圧プラズマ誘起流によるコンタクトレンズ滅菌装置の開発

岡崎和貴, 佐藤岳彦, 中嶋智樹, 押谷仁, 岡本道子, 中谷達行, 藤村茂

日本機械学会2017年度年次大会　2017/09/06
外部空気流付加による水ジェットの微粒化とデンタルプラーク洗浄への応用に関する研究

守屋修一, 伊賀由佳, 佐々木裕章, 佐藤岳彦, 圓山重直

混相流シンポジウム2017　2017/08/20
Propagation analysis of negative streamer channel in water International-presentation

Ryo Kumagai, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

23rd International Symposium on Plasma Chemistry (ISPC23)　2017/08/03
Visualization of inception, propagation and collapse process of underwater positive streamer International-presentation

Takehiko Sato, Ryo Kumagai, Tomoki Nakajima, Kiyonobu Ohtani, Atsuki Komiya, Toshiro Kaneko, Seiji Kanazawa

31st International Symposium on Shock Waves (ISSW31)　2017/07/13
酸素ガスプラズマにおける微量窒素酸化物の滅菌への影響

及川港基, 佐藤岳彦, 中嶋智樹, 長沢敏勝, 藤村茂, 中谷達行

第27回環境工学総合シンポジウム2017　2017/07/12
Gas-liquid interfacial plasmas for novel gene transfer systems International-presentation

Toshiro Kaneko, Shota Sasaki, Keisuke Takashima, Takehiko Sato, Makoto Kanzaki

International Conference on Phenomena in Ionized Gases (ICPIG2017)　2017/07/10
Development of Portable Plasma Disinfection Device for Contact Lens International-presentation Invited

Takehiko Sato, Kazuki Okazaki, Tomoki Nakajima, Hitoshi Oshitani, Michiko Okamoto, Toshikatsu Nagasawa, Tatsuyuki Nakatani, Shigeru Fujimura

5th East Asia Joint Symposium on Plasma and Electrostatics Technologies for Environmental Application (EAPETEA-5)　2017/06/10
Potential Formation in Water by Plasma Discharge between Needle and Water International-presentation

Takamasa Okumura, Chaoyi Zhou, Eijiro Kubo, Tetsuji Shimizu, Tomoki Nakajima, Takehiko Sato

4th Japan-Taiwan Workshop on Plasma Life Science and Technology (2017 JTPL)　2017/06/03
Sterilization by Oxygen Gas Plasma International-presentation

Koki Oikawa, Takehiko Sato, Tomoki Nakajima, Toshikatsu Nagasawa, Shigeru Fujimura, Tatsuyuki Nakatani

4th Japan-Taiwan Workshop on Plasma Life Science and Technology (2017 JTPL)　2017/06/02
Drug Introduction by Prolonged Reactive Species Production Using In-Liquid Plasmas International-presentation

Ryosuke Honda, Yutaro Hokari, Shota Sasaki, Makoto Kanzaki, Takehiko Sato, Toshiro Kaneko

4th Japan-Taiwan Workshop on Plasma Life Science and Technology (2017 JTPL)　2017/06/02
Directed Jetting from Cavitation Bubbles Subject to Traveling Pressure Wave International-presentation

Takahito Akimura, Tomoya Minami, Tomoki Nakajima, Kiyonobu Ohtani, Toshiro Kaneko, Outi Supponen, Mohamed Farhat, Takehiko Sato

4th Japan-Taiwan Workshop on Plasma Life Science and Technology (2017 JTPL)　2017/06/02
Development of Bio-Medical Applications Using Plasma Flow International-presentation Invited

Takehiko Sato

Opening Ceremony of Liaison Office Joint Workshop (National Chiao Tung University)　2017/05/04
The Sterilization Effect against Acanthamoeba on the Contact Lens Using the Plasma Irradiation International-presentation

Shigeru Fujimura, Takehiko Sato, Tomomi Nakano, Akira Watanabe

27th European Congress of Clinical Microbiology and Infectious Diseases (ECCMID 2017)　2017/04/24
気液界面プラズマ流の生成機構 Invited

佐藤岳彦

日本機械学会流体工部門A-TS05-24研究会「プラズマアクチュエータ研究会」第4回シンポジウム　2017/03/19
プラズマ誘起気泡の崩壊過程における放電の影響

鎌田さやか, Outi Supponen, 金澤誠司, 伊賀由佳, 中嶋智樹, Mohamed Farhat, 佐藤岳彦

日本機械学会東北支部第52期総会・講演会　2017/03/14
Study on Charge Transfer in Water after Generation of Single Pulsed Discharge

Chaoyi Zhou, Takamasa Okumura, Tetsuji Shimizu, Tomoki Nakajima, Takehiko Sato

2017/03/08
Plasma Gene Transfection: Enhancement of Cell Membrane Permeability Without Damage Using Gas-Liquid Interfacial Micro-Scale Plasmas International-presentation

Toshiro Kaneko, Masafumi Jinno, Takehiko Sato, Shota Sasaki, Makoto Kanzaki, Masanori Tachikawa, Hiroyasu Kanetaka, Yoshihisa Ikeda, Hideki Motomura, Susumu Satoh

International Conference on Plasma Medical Science Innovation 2017 (ICPMSI2017)　2017/02/27
Precise Analysis of Propagation of Underwater Negative Streamer International-presentation

Ryo Kumagai, Seiji Kanazawa, Atsuki Komiya, Kiyonobu Ohtani, Toshiro Kaneko, Tomoki Nakajima, Takehiko Sato

International Conference on Plasma Medical Science Innovation 2017 (ICPMSI2017)　2017/02/27
水中ストリーマ放電の開始・進展機構 Invited

佐藤岳彦, 藤田英理, 金澤誠司, 大谷清伸, 小宮敦樹, 金子俊郎

仙台 “プラズマフォーラム”　2017/01/30
Generation of Microbubbles by Collapse of Plasma-Induced Bubbles

Takehiko Sato, Marc Tinguely, Masanobu Oizumi, Mohamed Farhat

34th Symposium on Plasma Processing (SPP34) / 29th Symposium on Plasma Science for Materials (SPSM29)　2017/01/16
Development of Sterilization Device for Contact Lens International-presentation

3rd Taiwan-Japan Workshop on Plasma Life Science and Technology (2016TJPL)　2016/12/16
Effect of Discharge in a Plasma-induced Bubble on Cavitation Dynamics International-presentation

3rd Taiwan-Japan Workshop on Plasma Life Science and Technology (2016TJPL)　2016/12/16
Gas-Liquid Interfacial Atmospheric Pressure Plasmas for Medical Applications International-presentation

3rd Taiwan-Japan Workshop on Plasma Life Science and Technology (2016TJPL)　2016/12/16
Highly Temporal Visualization of Propagation Process of Underwater Negative Streamer International-presentation

3rd Taiwan-Japan Workshop on Plasma Life Science and Technology (2016TJPL)　2016/12/16
Pressure Measurement of Underwater Shock Waves by Optical Fiber Hydrophone International-presentation

3rd Taiwan-Japan Workshop on Plasma Life Science and Technology (2016TJPL)　2016/12/16
大気圧プラズマによる病原性微生物殺滅法と医療応用

大気圧プラズマの産業応用に関する特別講演会　2016/12/05
細胞膜透過性促進に寄与する液相中プラズマ生成活性種の同定

第33回プラズマ・核融合学会年会　2016/12/01
水中スパークおよびレーザー誘起気泡崩壊後の残留気泡に関する考察

日本機械学会第94期流体工学部門講演会　2016/11/13
Polarity effect on plasma in water for water quality improvement International-presentation

1st International Conference on Hybridized Agriculture (HA2016)　2016/10/22
Charge-up on Water Surface by Cold Atmospheric Plasma for Sanitization Device International-presentation

16th International Symposium on Advanced Fluid Information (AFI-2016)　2016/10/11
Development of Bubble Measurement Method by Plasma-generated Shockwave International-presentation

16th International Symposium on Advanced Fluid Information (AFI-2016)　2016/10/11
Propagation Mechanism of Negative Streamer Discharge in Water International-presentation

16th International Symposium on Advanced Fluid Information (AFI-2016)　2016/10/11
負極性水中放電におけるストリーマチャネルの可視化

第40回静電気学会全国大会　2016/09/29
細胞膜輸送に対する液相中プラズマの物理的・化学的刺激の効果

第77回応用物理学会秋季学術講演会　2016/09/15
大気圧プラズマ流による小型滅菌装置の開発

日本機械学会2016年度年次大会　2016/09/12
Effects of multi-stimuli on cell membrane permeability in micro solution plasma International-presentation

6th International Conference on Plasma Medicine (ICPM6)　2016/09/08
Development of small sterilization device using a low-temperature plasma flow at atmospheric pressure International-presentation

6th International Conference on Plasma Medicine (ICPM6)　2016/09/05
Observation of propagation process of negative streamer in water International-presentation

6th International Conference on Plasma Medicine (ICPM6)　2016/09/05
プラズマ誘起流の制御による小型滅菌装置の開発

第26回環境工学総合シンポジウム2016　2016/06/30
アカントアメーバによるコンタクトレンズ汚染モデルに対するプラズマ殺菌の基礎的検討

第64回日本化学療法学会総会　2016/06/10
Improvement of Functionality of Water by Plasma Discharge International-presentation

1st International Workshop on Plasma Agriculture (IWOPA-1)　2016/05/20
負極性水中放電の進展過程の可視化

日本機械学会東北支部第51期総会・講演会　2016/03/11
Initiation and Propagation Processes of Underwater Streamers International-presentation

Joint Symposium of the 9th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-9) and the 28th Symposium on Plasma Science for Materials (SPSM-28)　2015/12/13
Macromolecule Transfer through Cell Membrane Using Micro-Scale Plasma Generated in High-Conductivity Liquid International-presentation

Joint Symposium of the 9th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-9) and the 28th Symposium on Plasma Science for Materials (SPSM-28)　2015/12/12
Study on Formation of Plasma Nanobubbles in Water International-presentation

9th International Symposium on Cavitation (CAV-2015)　2015/12/07
Generation of Micro Solution Plasma for Minimally-Invasive In Vivo Gene Transfection International-presentation

2015 MRS Fall Meeting & Exhibit　2015/12/03
接着細胞への薬剤分子導入へ向けた液中微小プラズマの最適化

第32回プラズマ・核融合学会年会　2015/11/25
水中正ストリーマの進展開始電圧に及ぼす放電パラメータの影響

静電気学会2015年度シンポジウム－環境負荷低減に寄与するコーティング／表面処理技術－　2015/11/13
水中衝撃波を用いた指向性マイクロジェットの生成

日本機械学会第93期流体工学部門講演会　2015/11/07
Development of Bubble Generation Method by Plasma International-presentation

12th International Conference on Flow Dynamics (ICFD-2015), OS17: IFS Collaborative Research Forum (AFI-2015)　2015/10/28
Development of Small Sterilization Device using Low Temperature Plasma Flow for Inactivation of Pathogens International-presentation

12th International Conference on Flow Dynamics (ICFD-2015), OS17: IFS Collaborative Research Forum (AFI-2015)　2015/10/28
Effect of Electric Fields on the Inception of Primary and Secondary Streamers in Water International-presentation

12th International Conference on Flow Dynamics (ICFD-2015), OS17: IFS Collaborative Research Forum (AFI-2015)　2015/10/28
Generation and Transport of Chemical Species in Low-temperature Atmospheric Plasma for Sanitization Device International-presentation

12th International Conference on Flow Dynamics (ICFD-2015), OS17: IFS Collaborative Research Forum (AFI-2015)　2015/10/28
Microjet Formation Mechanism in a Cavitation Process International-presentation

12th International Conference on Flow Dynamics (ICFD-2015), OS17: IFS Collaborative Research Forum (AFI-2015)　2015/10/28
Localized Gene Transfection through Cell Membrane Stimulated by Micro Solution Plasma International-presentation

68th Annual Gaseous Electronics Conference/9th International Conference on Reactive Plasmas / 33rd Symposium on Plasma Processing (ICRP-9 / GEC-68 / SPP-33)　2015/10/16
水中ストリーマの進展開始電界強度への放電条件の影響

2015年度第39回静電気学会全国大会　2015/09/24
滅菌に向けた大気圧プラズマ流生成法の開発

日本機械学会2015年度年次大会　2015/09/16
ナノスケール非平衡プラズマによる高効率局所遺伝子導入

新学術領域研究「プラズマ医療科学の創成」＋「統合的神経機能の制御を標的とした糖鎖の作動原理解明」合同公開シンポジウム　2015/08/05
プラズマを用いた小型滅菌装置の開発と性能評価

第25回環境工学総合シンポジウム2015　2015/07/09
Threshold electric fields for the inception of a primary streamer and a secondary streamer in water International-presentation

22nd International Symposium on Plasma Chemistry (ISPC22)　2015/07/06
Responses of HeLa Cells Exposed to a Medium Treated by a Plasma Flow at Atmospheric Pressure International-presentation

The 2nd Japan-Taiwan Workshop on Plasma Life Science and Technology (2015 JTPL)　2015/06/13
Development and Performance Evaluation of a Small Plasma Sterilization Device International-presentation

The 2nd Japan-Taiwan Workshop on Plasma Life Science and Technology (2015 JTPL)　2015/06/12
Development of Small Sterilization Device Using Cold Plasma Flow International-presentation

The 2nd Japan-Taiwan Workshop on Plasma Life Science and Technology (2015 JTPL)　2015/06/12
Formation of Microjet by Plasma Generated Underwater Shock Wave International-presentation

The 2nd Japan-Taiwan Workshop on Plasma Life Science and Technology (2015 JTPL)　2015/06/12
ナノプラズマ制御技術の創成と局所照射による生体機能制御～水中ストリーマ放電の開始・進展機構～

佐藤岳彦, 藤田英理, 金澤誠司, 大谷清伸, 小宮敦樹, 金子俊郎

平成26年度第4回新学術領域研究「プラズマ医療科学の創成」全体会議　2015/03/21
Comprehensive gene expression analysis of cell responses by exposure to plasma-treated medium International-presentation

The 2nd International Workshop on Plasma for Cancer Treatment (IWPCT-2)　2015/03/17
培養液中プラズマ照射に対する細胞応答

日本機械学会東北支部第50期総会・講演会　2015/03/13
ナノスケール針状電極を用いた液中放電の機構解明

2015年第62回応用物理学会春季学術講演会　2015/03/11
水中ストリーマ放電の開始・進展機構

静電気学会「放電プラズマによる水処理研究委員会」キックオフ講演会　2015/03/06
大気圧水中放電の形成機構とバイオ応用

東北大学電気通信研究所共同プロジェクト研究会仙台“プラズマフォーラム”　2015/02/20
Plasma Sterilization Methods at Atmospheric Pressure International-presentation

1st Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL 2014)　2014/12/20
Nanosecond time-resolved imaging of underwater secondary streamer and the synchronized discharge current （水中二次ストリーマのナノ秒時間分解画像と同期放電電流） International-presentation

第24回日本MRS年次大会　2014/12/11
Characteristics of Pulse Discharge in Water Using Nanoscale Needle Electrode （ナノスケール針状電極による水中パルス放電の特性） International-presentation

第24回日本MRS年次大会　2014/12/10
Development of sterilization device using atmospheric pressure plasma International-presentation

International Workshop on Environment & Engineering 2014 (IWEE2014)　2014/11/19
細胞照射用低温プラズマ流生成法の開発

第24回環境工学総合シンポジウム2014　2014/11/18
ストリークカメラを用いた水中ストリーマの高時間分解解析

日本機械学会第92期流体工学部門講演会 (JSME FED 2014)　2014/10/26
水中衝撃波を用いたマイクロジェット生成法

日本機械学会第92期流体工学部門講演会 (JSME FED 2014)　2014/10/26
Performance of the sterilization device using a low-temperature atmospheric pressure plasma International-presentation

15th World Sterilization Congress　2014/10/16
Characteristics of a Plasma-induced Flow using a Mesh Electrode for Viral Inactivation International-presentation

11th International Conference on Flow Dynamics (ICFD2014), CS4: IFS Collaborative Research Forum (AFI2014)　2014/10/09
Development of New Visualization Method for Plasma-Generated Nano-Micro Bubbles International-presentation

11th International Conference on Flow Dynamics (ICFD2014), CS4: IFS Collaborative Research Forum (AFI2014)　2014/10/09
Formation of Microjet by Plasma Generated Underwater Shock Wave International-presentation

11th International Conference on Flow Dynamics (ICFD2014), OS10: The Tenth International Students / Young Birds Seminar on Multi-scale Flow Dynamics　2014/10/09
Generation and Transport of Chemical Species in Low-Temperature Atmospheric Plasma for Sanitization Device International-presentation

11th International Conference on Flow Dynamics (ICFD2014), CS4: IFS Collaborative Research Forum (AFI2014)　2014/10/09
Plasma Characterisitics of Discharge in a Culture Medium International-presentation

11th International Conference on Flow Dynamics (ICFD2014), OS10: The Tenth International Students / Young Birds Seminar on Multi-scale Flow Dynamics　2014/10/09
Propagation Processes of Primary and Secondary Streamers by Pulsed Discharge in Water International-presentation

11th International Conference on Flow Dynamics (ICFD2014), CS4: IFS Collaborative Research Forum (AFI2014)　2014/10/09
Sterilization Mechanism of Plasma Discharge against Biofilm-producing Pseudomonas aeruginosa on Contact Lenses International-presentation

11ｔｈ International Conference on Flow Dynamics (ICFD2014), CS4: IFS Collaborative Research Forum (AFI2014)　2014/10/09
Visualization of the Formation of Shock Waves at the Collapse of a Laser-induced Bubble International-presentation

11th International Conference on Flow Dynamics (ICFD2014), CS4: IFS Collaborative Research Forum (AFI2014)　2014/10/09
Effects of a Cold Plasma Flow on HeLa Cells Viability International-presentation

11th International Conference on Flow Dynamics (ICFD2014), OS10: The Tenth International Students / Young Birds Seminar on Multi-scale Flow Dynamics　2014/10/08
空気－水プラズマによるガス流駆動への水の導電率の影響

日本機械学会2014年度年次大会　2014/09/10
細胞培養液中放電のプラズマ特性

2014年度第38回静電気学会全国大会　2014/09/08
水中正ストリーマの進展開始電圧に及ぼす放電パラメータの影響

2014年度第38回静電気学会全国大会　2014/09/08
細胞培養液中におけるプラズマ生成法の開発とHeLa細胞への照射

日本機械学会東北支部第50期秋季講演会　2014/09/05
Role of continuous discharge current for secondary streamer in water International-presentation

International Symposium on Electrohydrodynamics (ISEHD 2014)　2014/06/24
Gas Flow Formation by Plasma Discharge on Water Surface International-presentation

International Symposium on Electrohydrodynamics (ISEHD 2014)　2014/06/23
大気圧プラズマによる病原性微生物殺滅法と医療応用

大気圧プラズマによる環境対策に関する特別講演会－健康社会・環境改善のための最先端プラズマ技術－　2014/06/06
Generation of micro plasma in water for biomedical applications International-presentation

5th International Conference on Plasma Medicine (ICPM5)　2014/05/22
大気圧プラズマの流れの科学

第7回新学術領域「プラズマ医療科学の創成」セミナー　2014/05/09
プラズマ利用による殺菌反応

平成26年電気学会全国大会シンポジウム S1「大気圧プラズマの反応シミュレーションの進歩」　2014/03/19
大型真空砲の加速長に対する速度測定

服部邦彦, 鈴木秀明, 清水拓磨, 佐藤杉弥, 塚林功, 佐藤岳彦

第61回応用物理学会春季学術講演会　2014/03/18
大気圧プラズマ流の生成機構～水中ストリーマの進展ならびに針－水面プラズマによるガス流誘起～

2014年度第一回静電気学会研究会　2014/03/06
Investigation of main sterilization factor of bacterial spores by atmospheric pressure air plasma International-presentation

6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma 2014)　2014/03/04
Driving mechanism of plasma-induced gas flow between needle electrode and water surface International-presentation

8th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-8)　2013/12/22
Observation of Underwater Discharge Phenomena Using a Laser Schlieren Technique International-presentation

8th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-8)　2013/12
Sterilization of Bacterial Spores by Atmospheric Pressure Plasma International-presentation

10th International Conference on Flow Dynamics　2013/11/27
Analysis of Plasma-generated Bubbles by Electron Microscope International-presentation

13th International Symposium on Advanced Fluid Information (AFI 2013)　2013/11/26
Bactericidal Effect of Plasma Discharge against Biofilm-producing Pseudomonas aeruginosa on Contact Lenses International-presentation

13th International Symposium on Advanced Fluid Information (AFI 2013)　2013/11/26
Characteristics of Non-equilibrium Plasma Flow for Viral Inactivation International-presentation

13th International Symposium on Advanced Fluid Information (AFI 2013)　2013/11/26
Flow Formation in Atmospheric Plasma Discharge between Pin Electrode and Water Surface International-presentation

13th International Symposium on Advanced Fluid Information (AFI 2013)　2013/11/26
On Hydrogen Generation by the Collapse of Cavitation Bubbles International-presentation

13th International Symposium on Advanced Fluid Information (AFI 2013)　2013/11/26
Visualized Propagation Process of Positive Primary Streamers in Water International-presentation

13th International Symposium on Advanced Fluid Information (AFI 2013)　2013/11/26
Characteristics of Chemical Species Generated by a Gas-Liquid Plasma Flow Using a Wire Electrode International-presentation

10th International Conference on Flow Dynamics　2013/11/25
Effects of Hydrostatic Pressure on Cell Cycle Progression and Morphology of Endothelial Cells International-presentation

10th International Conference on Flow Dynamics　2013/11/25
Plasma sterilization at low temperature and the transport mechanism of chemical species International-presentation

Seminar in National University of Singapore　2013/11/11
大気圧プラズマによる病原性微生物殺滅法と医療応用

静電気学会‐エアロゾル学会合同シンポジウム大気汚染物質の除去に関する特別講演会　2013/10/21
水中１次ストリーマの高時空間分解能計測

高速度イメージングとフォトニクスに関する総合シンポジウム2013　2013/10/17
空気プラズマ滅菌法の開発

日本機械学会東北支部第49期秋季講演会　2013/09/20
Plasma Sterilization Device using Circulating Air Flow under Atmospheric Pressure International-presentation

2013 JSAP-MRS Joint Symposia (Symposium O)　2013/09/16
水中1 次ストリーマのナノ秒時間分解観測

藤田英理, 金澤誠司, 大谷清伸, 小宮敦樹, 金子俊郎, 佐藤岳彦

第37回静電気学会全国大会　2013/09/11
気液プラズマによる気流駆動機構

日本機械学会2013年度年次大会　2013/09/09
血管内皮細胞の細胞周期動態に対する静水圧の影響

日本機械学会2013年度年次大会　2013/09/09
Role of pulsed repetitive current for positive primary streamers in water International-presentation

21st International Symposium on Plasma Chemistry　2013/08/09
Gene ontology analysis for HeLa cells exposed to a plasma- or H2O2-treated culture medium International-presentation

21st International Symposium on Plasma Chemistry　2013/08/06
水中放電におけるストリーマチャネル生成過程の可視化

第41回可視化情報シンポジウム　2013/07/17
ウイルス不活化に向けた低温プラズマ流の特性

第23回環境工学総合シンポジウム2013　2013/07/12
ワイヤ電極を用いた気液プラズマ流の化学種生成特性

第23回環境工学総合シンポジウム2013　2013/07/12
循環流を用いた空気プラズマ滅菌法の開発

第23回環境工学総合シンポジウム2013　2013/07/12
大気圧プラズマ流への暴露による細胞応答

第1回日本機械学会部門協議会「高度物理刺激と生体応答に関する研究分科会（P-SCC12）」特別講演会　2013/07/05
大気圧プラズマによる病原性微生物殺滅法と医療応用

大気圧プラズマによる環境対策に関する特別講演会－健康社会・環境改善のための最先端プラズマ技術－　2013/05/08
レーザシュリーレン法による水中ストリーマ放電の観測

三原康裕, 吉村大輔, 赤峰修一, 市來龍大, 金澤誠司, 佐藤岳彦

平成25年電気学会全国大会　2013/03/21
水中１次ストリーマの進展過程

日本機械学会東北支部第48期総会・講演会　2013/03/15
Sterilization device using air plasma under reduced-pressure environment International-presentation

5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials　2013/01/31
大気圧プラズマ流処理培地への暴露によるHeLa細胞の機能応答

日本機械学会第25回バイオエンジニアリング部門講演会　2013/01/09
微小プラズマ生成・制御技術の開発と局所照射による遺伝子導入への効果解明

新学術領域研究「プラズマ医療科学の創成」研究会　2013/01/05
Radical transport and biological response by a plasma flow at atmospheric pressure International-presentation

Plasma-Dental Engineering Seminar　2012/12/20
水中プラズマのストリーマ進展過程

電気学会プラズマ・パルスパワー合同研究会　2012/12/11
プラズマの医療応用

秋田県立大学機械知能システム学特別講義　2012/12/07
大気圧プラズマ流の照射によるHeLa細胞の生体応答

第28回九州・山口プラズマ研究会　2012/11/11
プラズマの生体作用

第2回パルスパワーおよび放電の農水系利用調査専門委員会　2012/11/09
Biofilm 産生グラム陰性桿菌に対するプラズマ間接殺菌法の効果

第61回日本感染症学会東日本地方会学術集会　2012/10
レーザシュリーレン法によるキュベット内水中放電現象の観測

三原康裕, 金澤誠司, 赤峰修一, 市來龍大, 大久保利一, 佐藤岳彦

平成24年度電気関係学会九州支部連合大会（第65回連合大会）　2012/09/24
Propagation Process of Streamer Discharge in Water International-presentation

9th International Conference on Flow Dynamics　2012/09/21
Development of Visualization Methods of Streamers in Water International-presentation

12th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI-2012)　2012/09/20
Effect of Cavitation Generation on Dissolved Oxygen Concentration in the Cavitation Tunnel Downstream International-presentation

12th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI-2012)　2012/09/20
Formation of Thermal Flow Field in Shallow Water Cell by Plasma Flow International-presentation

12th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI-2012)　2012/09/20
Anti-bacterial Effect of a Plasma Irradiation against Biofilm-producing Pseudomonas aeruginosa and Acinetobacter baumannii International-presentation

12th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI-2012)　2012/09/20
Development of Observation Method for Plasma-generated Bubbles International-presentation

12th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI-2012)　2012/09/20
Comprehensive Gene Expression Analysis of HeLa Cells in Response to Plasma Stimuli International-presentation

9th International Conference on Flow Dynamics　2012/09/20
水中ストリーマの極微小時空間計測

第36回静電気学会全国大会　2012/09/13
水中ストリーマ進展過程の可視化

日本機械学会2012年度年次大会　2012/09/10
Gene Expression Analysis Using a Microarray for Hela Cells Exposed to a Plasma Flow International-presentation

9th International Bioelectrics Symposium (BIOELECTRICS 2012)　2012/09/07
水面上に形成する大気圧プラズマの熱流動場・化学輸送解析

電気学会プラズマ・パルスパワー合同研究会　2012/08/09
大気圧プラズマのバイオ・医療に関する基礎と応用

大気圧プラズマの産業応用に関する特別講演会（日本機械学会環境工学部門企画）　2012/08/01
プラズマ照射によるMDCK細胞の不活性化

第22回環境工学総合シンポジウム2012　2012/07/06
大気圧放電による滅菌因子の検証

第22回環境工学総合シンポジウム2012　2012/07/06
水中プラズマのストリーマ形成過程

第22回環境工学総合シンポジウム2012　2012/07/06
Development of New Sterilization Device by a Plasma Flow International-presentation

2012 Bilateral Workshop on Green Technology and Life Science between Chang Gung University and Tohoku University　2012/05/15
大気圧低温プラズマ流のラジカル輸送機構と滅菌機構

スマート材料・デバイスの発展と技術イノベーション　2012/04/27
水中ストリーマ進展の温度依存性

日本機械学会東北支部第47期総会・講演会　2012/03/13
Flow formation and chemical species transport in a pin-water surface atmospheric plasma International-presentation

The 8th EU-Japan Joint Symposium on Plasma Processing (JSPP2012)　2012/01/16
大気圧プラズマ流処理培地への暴露によるHeLa細胞の機能応答

日本機械学会第25回バイオエンジニアリング部門講演会　2012/01/09
プラズマ処理培地への暴露におけるHeLa細胞不活性化因子

日本機械学会第２４回バイオエンジニアリング部門講演会　2012/01/07
プラズマ流と生体の相互作用解明に向けた流体工学的取組

日本機械学会環境工学部門第２回第３技術委員会　2011/12/22
大気圧プラズマ流による生体への干渉機構－プラズマ医療への展開－

第１回流体科学におけるバイオ・医療に関する講演会　2011/12/21
Plasma Induced Flow and Chemical Transport in a Plasma-Water System International-presentation

21st MRS-Japan Academic Symposium　2011/12/19
流体力学的視点からみたプラズマ医療

プラズマ核融合学会専門委員会「プラズマ科学の医療応用」第２回会合　2011/12/16
プラズマ処理培地への暴露による細胞不活性化における過酸化水素の役割

プラズマコンファレンス２０１１ (PLASMA2011)　2011/11/22
Observation of Liquid-Gas Phase Dynamics from Pre-breakdown to Post-discharge in a Single-shot Underwater Pulsed Discharge International-presentation

2nd ISNPEDADM-2011 (New electrical technologies for environment)　2011/11/14
Effect of Chemical Species Generated by a Plasma Flow on Inactivation of HeLa Cell Viability International-presentation

8th International Conference on Flow Dynamics (ICFD2011)　2011/11/11
Analysis of Plasma Flow at Gas-Liquid Interface for Biological Interaction International-presentation

11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　2011/11/10
Anti-bacterial Effect of a Dielectric Barrier Discharge Plasma against Biofilm-producing Gram Negative Bacilli International-presentation

11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　2011/11/10
Effect of Neighboring Solid Wall on Generation of Residual Microbubbles after Collapse of Laser-Induced Bubble International-presentation

11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　2011/11/10
Observation of Bubble Formation and Collapse Process by Generating a Plasma International-presentation

11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　2011/11/10
Streamer Propagation Mechanism in Water International-presentation

11th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2011)　2011/11/10
プラズマ照射培地による細胞不活性化

第３５回静電気学会全国大会　2011/09/13
プラズマ滅菌

第２回プラズマ・バイオ融合若手研究会　2011/09/02
Inactivation process of HeLa cell by exposure to a plasma-treated medium International-presentation

20th International Symposium on Plasma Chemistry (ISPC-20)　2011/07/25
大気圧プラズマ流の気液中における熱流動解析

第２１回環境工学総合シンポジウム２０１１　2011/07/01
大気放電による滅菌法の開発

第２１回環境工学総合シンポジウム２０１１　2011/06/30
大気圧プラズマ流の化学種生成輸送機構と滅菌特性

学術振興会「プラズマ照射による医療用品の滅菌、エンドトキシンならびにプリオン不活化法と応用」に関する研究開発専門委員会、平成23年度第4回合同委員会　2011/06/27
Transport Mechanism of Chemical Species in a Pin-water Atmospheric Discharge driven by Negative Voltage International-presentation

28th International Conference of Photopolymer Science and Technology　2011/06/23
水面上に形成するプラズマ流による気液中の化学輸送機構

第２３回「電磁力関連のダイナミクス」シンポジウム　2011/05/18
大気圧プラズマのバイオ・医療応用

バイオエレクトリクスシンポジウム2011　2011/03/10
大気圧プラズマ流の生成化学種による細胞への影響

日本機械学会第23回バイオエンジニアリング講演会　2011/01/09
Plasma Sterilization by Generation and Transport of Reactive Chemical Species International-presentation

Takehiko Sato

20th Academic Symposium of MRS-Japan 2010　2010/12/20
Mechanism for Inactivation of Bacteria by Transport of Chemical Species in a Plasma Flow at Atmospheric Pressure International-presentation

Takehiko Sato

The 1st International Workshop on Bio Device and Medical Applications　2010/11/26
Water Quality Change Induced by Plasma Formation in Water International-presentation

Takashi Miyahara, Takehiko Sato, Masanobu Oizumi, Tatsuyuki Nakatani

10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2010)　2010/11/01
Development of Next-Generation Plasma Autoclave International-presentation

Takehiko Sato, Takeshi Furui, Kei Igarashi

10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2010)　2010/11/01
Residual Microbubbles after Collapse of Discharge-Induced or Laser-Induced Bubbles in Water International-presentation

Marc Tinguely, Masanobu Oizumi, Takehiko Sato, Mohamed Farhad

10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2010)　2010/11/01
Observation of Streamer and Bubble Generation by Plasma International-presentation

Takehiko Sato, Masanobu Oizumi, Takashi Miyahara, Tatsuyuki Nakatani

10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration (AFI/TFI2010)　2010/11/01
大気圧水蒸気プラズマ流の化学種生成過程と滅菌機構

佐藤岳彦, 古居剛

日本機械学会第88期流体工学部門講演会　2010/10/30
Effect of Culture Medium Exposed to a Plasma Flow on Activity of HeLa Cells International-presentation

Takehiko Sato, Mayo Yokoyama, Kohei Johkura

3rd International Conference on Plasma Medicine (ICPM 3)　2010/09/19
W0501「電磁場に応答する機能性流体研究の最先端」大気圧プラズマ流による機能性化学種の生成輸送機構と滅菌機構

佐藤岳彦

日本機械学会2010年度年次大会　2010/09/06
水中の放電現象による水質への影響

日本機械学会第20回環境工学総合シンポジウム2010　2010/06/27
Characteristics of a Plasma Flow Generated in Pure Water Vapor at Atmospheric Pressure and Its Sterilization Efficacy International-presentation

Takehiko Sato, Takeshi Furui

International Workshop on Plasmas with Liquids (IWPL 2010)　2010/03/22
Generation of a Plasma Flow in Pure Steam and Its Sterilization Efficacy

Takehiko Sato

プラズマ生成・電離過程に関わる突発性と構造形成研究会　2010/03/15
大気圧アルゴンプラズマ流と水の干渉機構

佐藤岳彦, 落合史朗, 宮原高志

日本機械学会熱工学コンファレンス2009　2009/11/07
Mechanism of Radical Generation and Sterilization by a Plasma Flow at Atmospheric Pressure International-presentation

Takashi Miyahara, Shiro Ochiai, Takehiko Sato

9th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration　2009/11/04
Mechanism of Bubble Generation and Disappearance by Plasma International-presentation

Takehiko Sato, Masanobu Oizumi, M. Tinguely, Mohamed Farhat

9th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration　2009/11/04
Production of Complex Plasma at Atmospheric Pressure International-presentation

Takehiko Sato, Yutaka Iwafuchi, Tetsuji Shimizu, Gregor E. Morfill

9th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration　2009/11/04
Development of Bubble Generation Method by Plasma International-presentation

Takehiko Sato, Masanobu Oizumi, Takashi Miyahara, Tatsuyuki Nakatani

9th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration　2009/11/04
大気圧プラズマ流の超微弱発光可視化による機能性化学種の生成輸送解析

佐藤岳彦, 落合史朗, 浦山卓也

可視化情報学会全国講演会（米沢2009）　2009/10/24
Effect of Plasma Generation on Characteristics of Water and Its Mechanism International-presentation

Takehiko Sato

Swiss Federal Institute of Technology Lausanne (EPFL)　2009/10/09
大気圧水蒸気プラズマ流による滅菌機構

佐藤岳彦, 古居剛

第33回静電気学会全国大会　2009/09/10
水中プラズマによる水の特性変化への印加電圧極性の影響

佐藤岳彦, 大泉雅伸, 宮原高志, 中谷達行

電気学会プラズマ技術委員会プラズマ研究会　2009/09/04
Mechanism of Sterilization by Steam Plasma Flow at Atmospheric Pressure for Innovative Autoclave International-presentation

Takehiko Sato, Takeshi Furui

2nd International Conference on Plasma Medicine (ICPM-2)　2009/03/16
大気圧プラズマ流による滅菌機構および医療分野への展開

佐藤岳彦

第６回大気圧プラズマ流による人間環境保全技術に関する研究分科会　2009/03/13
Generation and Transportation Mechanisms of Chemical Species by an Atmospheric Plasma Flow in a Tube for Sterilization International-presentation

Takehiko Sato

International Symposium of Experiment-Integrated Computational Chemistry on Multiscale Fluidics (ECCMF)　2009/01/17
大気圧低温プラズマ流による滅菌機構と医療分野への応用について

佐藤岳彦

メディカルテキスタイルの開発に関する研究会　2008/11/21
Improvement of Oxidation Reduction Potential by Plasma in Water International-presentation

Takehiko Sato, Masanobu Oizumi, Takashi Miyahara, Tatsuyuki Nakatani

International Symposium on Electrostatics in Okinawa　2008/11/09
Transportation of Chemical Species in a Post Discharge Flow in Atmospheric Air International-presentation

Takehiko Sato, Shiroh Ochiai, Takuya Urayama

9th Asia-Pacific Conference on Plasma Science and Technology and 21st Symposium on Plasma Science for Materials (9APCPST & SPSM21)　2008/10/08
Generation and Transport Mechanisms of Chemically Active Species in Post Discharge Flow International-presentation

Takehiko Sato

Collaboration Seminar in Max-Planck-Institute for Extraterrestrial Physics　2008/09/26
Gaseous and Water Plasma Flow at Atmospheric Pressure and Its Application to Medical Field International-presentation

Takehiko Sato

Core to Core Seminar in Lausanne　2008/09/23
Plasma Sterilization: Mechanism and Application International-presentation

Takehiko Sato

Core to Core Seminar in Geneva　2008/09/22
放電部下流域における化学的活性種の生成輸送機構

佐藤岳彦, 落合史朗, 浦山卓也

第32回静電気学会全国大会　2008/09/18
ROS Generation in Water by Exposure to an Argon Plasma Flow International-presentation

Takashi Miyahara, Shiroh Ochiai, Takehiko Sato

International Interdisciplinary- Symposium on Gaseous and Liquid Plasmas (ISGLP2008)　2008/09/05
Application of an Atmospheric Nonequilibrium Plasma Flow to Medical Field International-presentation

Takehiko Sato

International Workshop on Molecular Gas Dynamics　2008/07/29
水中プラズマによる水の特性変化

佐藤岳彦, 大泉雅伸, 宮原高志, 中谷達行

日本機械学会第18回環境工学総合シンポジウム2008　2008/07/10
大気圧低温プラズマ流の照射による水の特性変化

宮原高志, 落合史朗, 佐藤岳彦

第20回「電磁力関連のダイナミクス」シンポジウム　2008/05/21
Characteristics of Low Temperature Plasma Flow at Atmospheric Pressure and its Application to Medical Field International-presentation

The 6th EU-Japan Joint Symposium on Plasma Processing (JSPP2008)　2008/04/21
大気圧プラズマ流による医療分野への展開

日本学術振興会プラズマ材料科学第153委員会第85回研究会バイオ・プラズマ応用　2008/03/18
大気圧プラズマ流の技術動向及び医療分野への応用

平成19年度第2回プラズマ研究交流会―プラズマ技術の応用可能性を探る― （中国経済産業局主催）　2007/12/06
細管内に形成された大気圧非平衡プラズマ流のラジカル輸送機構

佐藤岳彦, 古屋修, 中谷達行

日本機械学会第85期流体工学部門講演会　2007/11/17
Dielectric Barrier Discharge in Tube for Catheter Sterilization and its Mechanism for Radical Generation and Transportation International-presentation

Takehiko Sato, Osamu Furuya, Kei Ikeda, Tatsuyuki Nakatani

The 1st International Conference on Plasma Medicine (ICPM-1)　2007/10/15
Analysis of Post Discharge Flow by Microwave Argon Plasma at Atmospheric Pressure for Bacteria Sterilization International-presentation

Takehiko Sato, Shiroh Ochiai, Takuya Urayama, Tatsuyuki Nakatani, Takashi Miyahara

The 1st International Conference on Plasma Medicine (ICPM-1)　2007/10/15
細管内誘電体バリア放電のラジカル生成輸送解析と滅菌特性

佐藤岳彦, 古屋修, 池田圭, 中谷達行

第31回静電気学会全国大会　2007/09/10
細管内誘電体バリア放電の数値解析

古屋修, 佐藤岳彦, 池田圭, 中谷達行

日本機械学会第17回環境工学総合シンポジウム2007　2007/07/19
マイクロ波放電を用いた大気圧低温プラズマ流の滅菌機構

佐藤岳彦, 宮原高志, 落合史朗, 土井章子, 浦山卓也, 中谷達行

第30回静電気学会全国大会　2006/09
Sterilization Efficacy in a Tube by a Nonthermal Plasma Flow at Atmospheric Pressure International-presentation

Takehiko Sato, Osamu Furuya, Tatsuyuki Nakatani

ESA/IEEE-IAS/IEJ/SFE Joint Conference on Electrostatics 2006　2006/06/06
Sterilization of Escherichia Coli by a Coaxial Microwave Plasma Flow International-presentation

2005 IEEE Industry Applications Conference 40th Annual Meeting　2005/10/02
大気圧低温プラズマ流による低濃度メタノールの分解特性とプロセス解析

プラズマプロセスシミュレーション研究会　2005/07/26
大気圧非平衡プラズマ流によるVOC分解特性とプロセス解析

佐藤岳彦, 神戸誠, 西山秀哉

日本機械学会第15回環境工学総合シンポジウム2005　2005/07
Sterilization of Escherichia Coli by a Low Temperature Coaxial Microwave Plasma Flow at Atmospheric Pressure

Takehiko Sato, Akiko Doi, Shiroh Ochiai, Takashi Miyahara, Takuya Urayama, Kazunari Fujioka, Raju Ramasamy, Tatsuyuki Nakatani

第18回プラズマ材料科学シンポジウム　2005/06
大気圧低温プラズマ流による室内環境浄化－微量化学物質の分解と滅菌－

日本機械学会機能性流体工学の先端融合化に関する研究分科会　2005/05/16
Basic Characteristics of Sterilization by a Coaxial Microwave Plasma International-presentation

First International Conference on Flow Dynamics　2004/11/11
Sterilization Characteristics by a Coaxial Microwave Plasma Flow at Atmospheric Pressure International-presentation

IEEE/IAS 39th Annual Meeting　2004/10/03
Decomposition Characteristics of VOCs Using Nonthermal Plasma Flow International-presentation

7th Asia Pacific Conference on Plasma Science and Technology (APCPST) & 17th Symposium on Plasma Science for Materials (SPSM)　2004/06/29
Computational Evaluation of Coating Characteristics in Ceramic Spraying International-presentation

International Thermal Spray Conference & Exposition (ITSC2004)　2004/05/10
CFD-ACE+による大気圧非平衡プラズマの反応流動場解析

プラズマプロセスシミュレーション研究会　2004/03/08
大気圧非平衡プラズマ流の放電特性と反応流動場解析

高温プロセス部会ノーベルプロセシングフォーラムプラズマの化学的応用研究グループ平成15年度研究会　2004/01/23
Performance of Intelligent Control Systems for an Oscillating Plasma Jet International-presentation

The Forth International Symposium on Applied Plasma Science　2003/09/01
Reactive Flow Analysis of Nonthermal Plasma in a Cylindrical Reactor International-presentation

ESA-IEEE Joint Meeting on Electrostatics 2003　2003/06/24
数値シミュレーションによるプラズマ溶射プロセスの評価

（社）溶接学会アドホック研究会　2002/11/21
プラズマ溶射プロセスの数値シミュレーションによる表面改質，成膜評価

平成１４年度第１回静電気学会研究委員会　2002/08/31
Basic Discharge Characteristics of a Non-thermal Plasma Flow International-presentation

Joint International Plasma Symposium of 6th APCPST, 15th SPSM, OS　2002/06/01
Control System Performance of a Plasma Jet and Numerical Evaluations of Plasma Spraying Processes International-presentation

ソウル国立大学原子力工学科　2002/05/13
プラズマ溶射の数値実験による最適化

プラズマプロセスシミュレーション研究会　2002/01/24
Optimization for Plasma Spraying Processes by Numerical Simulation International-presentation

1st International Symposium on Advanced Fluid Information　2001/10/04
Control System Characteristics of a Nonequilibrium Plasma Jet International-presentation

15th International Symposium on Plasma Chemistry　2001/07/09
Numerical Simulation of a Particle -Laden Plasma Flow in a Complex Configuration under an Electromagnetic Field International-presentation

4th International Conference on Multiphase Flow (ICMF-2001)　2001/05/27
プラズマ溶射プロセスの最適化数値シミュレーション

溶接学会第５６回界面接合研究委員会　2001/01/19
Computational Experiment of a Complex Dusted Plasma Flow International-presentation

First International Conference on Computational Fluid Dynamics　2000/07/09
Mixing Effect on a Nonequilibrium Plasma Jet in an Applied Magnetic Field International-presentation

14th International Symposium on Plasma Chemistry　1999/08/02
Advanced Functions of a Non-equilibrium Plasma Jet by Seeding in the Applied Magnetic Field International-presentation

International Symposium on Microsystems, Intelligent Materials and Robots　1995/09/27
Effect of a Magnetic Field on Turbulence of a Non-equilibrium Plasma Jet in a Pipe International-presentation

12th International Symposium on Plasma Chemistry　1995/08/21
Magnetic Control of a Low Pressure Plasma Pipe Flow International-presentation

Third JSME-KSME Fluid Engineering Conference　1994/07/25

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Industrial Property Rights 27

凝縮ガス中の不凝縮ガスの判別方法及び判別ユニット

佐藤岳彦, 中嶋智樹, 上原聡司, 五十嵐敬, 吉永千佳士, 湯本紳一, 佐藤晶, 忰田正浩

特許第7525841号

Property Type: Patent

Holder: 国立大学法人東北大学、株式会社平山製作所
気泡内圧力測定装置、気泡内圧力測定方法、及び、プログラム、並びに、気泡内圧力評価装置、及び、気泡内圧力評価方法

佐藤岳彦, 鎌田さやか, 中嶋智樹, 伊賀由佳

特許第7295525号

Property Type: Patent
Sterilization Device and Sterilization Method

Shigeru FUJIMURA, Takehiko SATO, Tomoki NAKAJIMA, Kazuki OKAZAKI, Hideto KAMIYAMA, Hitoshi OSHITANI, Michiko OKAMOTO, Kei IGARASHI, Toshikatsu NAGASAWA, Katsuyuki SUZUKI, Hitonari NAKAMURA, Tatsuyuki NAKATANI

3934685

Property Type: Patent
殺菌装置、及び、殺菌方法

佐藤岳彦, 中嶋智樹, 岡崎和貴, 神山秀人, 押谷仁, 岡本道子, 五十嵐敬, 長沢敏勝, 鈴木勝之, 中村人也, 藤村茂, 中谷達行

特許第6675538号

Property Type: Patent
中空微粒子の製造方法

佐藤岳彦, 大泉雅伸, 中谷達行, 阿部義紀

特許第5283122号

Property Type: Patent
プラズマ発生装置およびプラズマ発生方法

佐藤岳彦, 古屋修, 中谷達行, 木邑達男

特許第5193483号

Property Type: Patent
気泡発生方法

佐藤岳彦, 落合史朗, 宮原高志, 中谷達行, 木邑達男, 阿部義紀

特許第5190834号

Property Type: Patent
還元水生成装置および還元水生成方法

佐藤岳彦, 中谷達行, 阿部義紀

特許第5070644号

Property Type: Patent
Plasma Generation System and Plasma Generation Method

Takehiko Sato, Tatsuyuki Nakatani, Tatsuo Kimura

US 8,168,130 B2

Property Type: Patent

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特願2005-269989 (2005.9.16)
プラズマ発生方法およびプラズマ発生装置

佐藤岳彦, 中谷達行, 木邑達男

特許第4902842号

Property Type: Patent
プラズマ滅菌装置及びプラズマ滅菌方法

佐藤岳彦, 古居剛, 五十嵐敬

特許第4881249号

Property Type: Patent
プラズマ発生装置およびプラズマ発生方法

佐藤岳彦, 中谷達行, 木邑達男

特許第4798635号

Property Type: Patent
機能水製造方法および装置

佐藤岳彦, 落合史朗, 浦山卓也

Property Type: Patent
プラズマ発生装置およびプラズマ発生方法

西山秀哉, 佐藤岳彦, 片桐一成, 髙奈秀匡, 中嶋智樹, 仲野是克, 堤崎高司

Property Type: Patent
発光体の微弱発光領域を光学装置によって観測するための方法および装置

佐藤岳彦, 志田彰典

Property Type: Patent
プラズマ発生装置

佐藤岳彦, 芳賀洋一, 中谷達行, 木邑達男

Property Type: Patent
プラズマ発生装置、表面処理装置、光源、プラズマ発生方法、表面処理方法および光照射方法

佐藤岳彦, 中谷達行, 木邑達男

Property Type: Patent
プラズマ処理装置およびプラズマ処理方法

西山秀哉, 佐藤岳彦, 片桐一成

Property Type: Patent
低温乾式殺菌方法および装置

佐藤岳彦, 藤井修逸, 浦山卓也, 志田彰典, ラマサミー・ラズ, 藤岡万也, 中谷達行

Property Type: Patent
プラズマ制御方法、及びプラズマ制御装置

西山秀哉, 佐藤岳彦, 片桐一成

3793816

Property Type: Patent
非接触発光流体流速計

佐藤岳彦, 西山秀哉, 片桐一成, 塩崎裕一

Property Type: Patent
微粒子捕集装置及びプラズマ処理装置

西山秀哉, 佐藤岳彦, 片桐一成, 伊藤憲男, 渡辺努, 菊田清

3551320

Property Type: Patent
熱電変換素子及び熱電変換素子の製造方法

佐藤岳彦, 亀井克基, 小林健太郎

3484960

Property Type: Patent
熱電変換モジュールの製造方法

佐藤岳彦, 亀井克基, 鹿田善一, 小林健太郎

3724133

Property Type: Patent
熱電モジュールの製造方法

亀井克基, 鎌田策雄, 中村良光, 鹿田善一, 佐藤岳彦

3509450

Property Type: Patent
熱電変換素子およびその製造方法

3144328

Property Type: Patent
熱電モジュールの製造方法

鹿田善一, 亀井克基, 鎌田策雄, 中村良光, 佐藤岳彦

3528471

Property Type: Patent

Show all Show first 5

Research Projects 35

大気圧プラズマによる細胞不活性化 Competitive

System: The Other Research Programs

2011/04 - Present
気液界面現象に関する研究 Competitive

System: Cooperative Research

2009/04 - Present
大気圧微粒子プラズマの基礎研究 Competitive

2008/04 - Present
Functional enhancement of water by a plasma flow Competitive

System: Cooperative Research

2005/04 - Present
水中プラズマの反応流動機構の解明 Competitive

2005/04 - Present
Generation and transportation of chemically active species by a nonequilibrium plasma flow at atmospheric pressure and its sterilization mechanism Competitive

System: Cooperative Research

2003/12 - Present
大気圧プラズマ流と生体の相互作用 Competitive

2003/04 - Present
準液滴の科学：水の転成が生む混沌と秩序

佐藤岳彦, 由井宏治, 谷垣実, 原田慈久, 藤村茂, 伊賀由佳, 小林一道, 立花孝介, 劉思維, 宮原高志

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(S)

Institution: 東北大学

2025/04 - 2030/03
帯電気泡崩壊圧縮による革新的ナノ秒パルスＸ線が拓くがん細胞転移抑制

佐藤岳彦, 劉思維, 宮原高志

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 挑戦的研究(開拓)

Institution: 東北大学

2023/06 - 2026/03
プラズマを利用したキャビテーション気泡内圧力・ガス種リアルタイム同時計測 Competitive

佐藤岳彦

Offer Organization: 日本学術振興会

System: 科学研究費助成事業挑戦的研究(萌芽)

Category: 挑戦的研究(萌芽)

Institution: 東北大学

2020/07 - 2022/03
Development of principle of underwater-plasma ultra-high-speed charge transfer mechanism by hypothesis of pioneer hydrated electron channel formation Competitive

TAKEHIKO SATO

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2019/04 - 2022/03

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We designed the devices for the streamer generation and the measurement of the hydrated electron, then examined and developed the method for the detection of the hydrated electron by image analysis of the streamer development direction, chemical measurement by scavenger, measurement of red light absorption, measurement of probe light absorption, measurement of Raman scattering light, and the measurement of cell responses. Also, we verified the precursor phenomenon caused by the potential change at the time of the streamer propagation on the water film. These results showed that we succeeded in verifying the generation of hydrated electron by plasma for the first time in the world and that there is a possibility that the generation of hydrated electron have an influence on the streamer propagation.
Development of Micro X-ray Point Source by Collapse and Compression of Plasma-Charging Bubbles Competitive

SATO Takehiko, UEHARA Satoshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2018/06 - 2020/03

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This study aimed at development of an X-ray generation method using high charge density at the time of collapse by charging plasma-induced bubbles. We validated the charge transport mechanism in a liquid which is essential for charge densification, and clarified the details of electric potential and delay time formed by escape of charges from the accumulated charged area. We also aimed at enhancement of charge density by using insulating oil. Comparing insulating oil and water, water has a higher shrink velocity at the time of collapse and a smaller minimum bubble diameter which is directly linked to densification. This result indicated that the charge accumulation in the bubble has the influence on the shrink velocity and the minimum bubble size. Also, based on the Paschen’s law, we newly developed a measurement method of the pressure inside the bubble which strongly affects the minimum bubble diameter at the time of collapse.
Cell Responses Induction Mechanism by Control of Generation and Transport of Plasma Charge Stimuli Competitive

SATO Takehiko, KANAZAWA Seiji, YANO Ken-ichi, KANEKO Toshiro, IGA Yuka, MIYAHARA Takashi, OKUMURA Takamasa, FARHAT Mohamed, NAKATANI Tatsuyuki, SHIMIZU Tetsuji

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2016/04 - 2019/03

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The charge transport mechanism in water was clarified by constructing a measurement system of the electric potential and by analyzing an equivalent circuit model proposed in this study. Also, it was clarified that the micro bubbles generated by underwater plasma moved with the velocity of higher than 50 m/s by the electric field, and its electrical charge quantity of the bubbles was estimated. Furthermore, a device which gives only electrical charge stimuli without chemical stimuli to the cells was developed and it was clarified that the actin filaments in the cells were elongated by the charged stimuli. Also, we clarified the generation mechanism of the directional microjet aiming at injecting charges to the inside of the cells and propagation mechanism of the negative streamer, by developing the visualization method of the small pressure.
Develpment of ultrahigh density charge accumulation method using the growth and the contraction of plasma-induced bubbles Competitive

SATO Takehiko, KANAZAWA Seiji

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2015/04 - 2017/03

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This research aimed at forming very high density of electric charge by using a collapse process of a plasma-induced bubble. The bubble was formed by a nano-pulse laser of 532 nm and a discharge was generated using a submerged narrow electrode with application of positive or negative voltages. The collapse process of the bubble was visualized by a high speed camera of 10 Mfps in frame rate. Thus, a device which can discharge in a laser-induced bubble and can visualize the phenomenon was successfully developed. It was found that streamer channels were generated when the diameter of the bubble decrease in the cases of positive and negative voltage although the streamer was not generated without the discharge. This result implies that the elevated density of the charge probably generated a high potential which is greater than the threshold of inception electric field strength for the streamer. This is an important founding to develop a method to accumulate high density of electric charge.
Construction of nano-plasma control technique and biological function control by localized plasma irradiation Competitive

KANEKO Toshiro, KANZAKI Makoto, TACHIKAWA Masanori, KANETAKA Hiroyasu, TAKASHIMA Keisuke

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Institution: Tohoku University

2012/06 - 2017/03

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In order to develop a highly efficient and minimally invasive drug delivery method, the applications of plasmas generated in liquid to control of biological response have been proposed. In the beginning, it has been experimentally verified that micro-scale plasma was generated by applying a pulse voltage to coaxial type thin electrode and had the capability to enhance the cellular uptake of drugs and genes. Next, investigation of effects of separated plasma-derived stimuli on drug uptake showed that plasma-produced short-lived reactive species contribute to the drug uptake. Furthermore, it is clarified that relatively short-lived reactive species (i.e., deactivated within approximately 10 min) in plasma-irradiated saline induced physiologically relevant calcium ion influx through ion channel on cell membrane, which triggers activation of gene and drug uptake.
Development of plasma nano-bubbles with modified antibody for induction of apoptosis Competitive

SATO Takehiko, MIYAHARA Takashi, OHTANI Kiyonobu, YOSHINO Daisuke

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2013/04 - 2015/03

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The underwater discharge device which produces a large amount of microscopic bubbles was accomplished by installing the insulation-coated needle-like and ring-shaped platinum wire electrodes in the ultrapure water and applying the high voltage to the needle electrodes. It has been shown that these bubbles generated a particle size distribution with a greatest frequency of particle size of 100 - 200 nm. Also, a verification method for ultrafine bubbles that was impossible for solid-gas determination was developed by developing the devices that pressurizes and observes the bubbles with a maximum of 100 atm in order to distinguish solid impurities such as electrode materials and the ultrafine bubbles, and that observes bubble deformation using shock waves. By these results, we proposed an important fundamental technology toward modification of antibodies of nano-bubbles.
Induction mechanism of targeted gene expression by controlling spatiotemporally plasma flow at biological interface Competitive

SATO Takehiko, JOHKURA Kohei, OHARA Taku, KANAZAWA Seiji, MIYAHARA Takashi, KOMIYA Atsuki, OHTANI Kiyonobu, YOSHINO Daisuke

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2012/04 - 2015/03

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The development of the formation and controlling method of the self-preserving plasma flow were accomplished by development of the high-speed high-voltage power supply, visualization system which had a very high spatiotemporal resolution and high accurate synchronous measurement system of the plasma characteristics. It has been shown that the self-preserving plasma flow makes a microscopic bubble cluster at the tip of the electrode several hundred nanoseconds after the voltage was applied, then starts propagation intermittently with a speed of about 2 kilometers per second from the tip of the protrusion of the bubbles synchronously with the pulsed discharge current. As for the induction of gene cluster expression, it has been shown by the comprehensive gene analysis that the gene cluster with functions of metabolism, immunity, regeneration, etc. expressed by weak plasma stimuli, which was different from hydrogen peroxide which was a main cause of the plasma stimuli.
Development of method of inducing cell response by gene expression plasma flow Competitive

SATO Takehiko, JOHKURA Kohei

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2011 - 2012

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To transport of plasma stimuli to cell membrane, we found following results: 1. a primary streamer under water is much suitable to apply charged particles due to its low discharge current. 2. Hydrogen peroxide in the plasma-treated culture medium is not the inactivation factor of cell viability among chemical species when the plasma stimulus is weak though H2O2 is the main in activation factor in the strong plasma stimuli case.3. Analysis using AFM revealed morphologically the cell membrane surface and the plasma effect on the surface shape.
Mechanism of activation and inactivation of cell viability by generation and transport control of biological reactive plasma flow Competitive

SATO Takehiko, OHARA Taku, JOHKURA Kohei, MIYAHARA Takashi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2009 - 2011

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The chemical species of the biological reactive plasma flow was mainly transported by the generation of the expanding high temperature gas flow on the water surface and induced water flow due to the gas flow. Hydrogen peroxide among the stable chemical species generated by the plasma flow was identified as an important inactivation factor of the HeLa cell viability by the morphological variation process, the effect of catalase, the gene expression analysis, and so on. The energy transport in the cell membrane was affected by the transport directions and molecular types.
生体分散プラズマ流の帯電制御による細胞空間格子配列法の開発 Competitive

佐藤岳彦

Offer Organization: 日本学術振興会

System: 科学研究費助成事業挑戦的萌芽研究

Category: 挑戦的萌芽研究

Institution: 東北大学

2008 - 2009

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本研究は,大気圧プラズマ流中に細胞を包含するナノ・マイクロスケールの液滴を分散し,その帯電量を制御することにより,細胞を空間格子構造に均一配列させる研究課題であり,革新的な遺伝子導入プロトコル創成への基礎研究と成すことを目的としている. 平成21年度は,平成20年度に液滴の空間配列の可能性を示唆する成果をえられたものの,空間中への配列に至らなかった要因を検証した.その結果,本年度は,細胞を液体培地表面に配列することを想定し,液面上に微粒子を配列する手法の開発を進めた.液面上に分散させた粒径数十μmのポリマー微粒子に,大気圧低温プラズマ流を照射し照射条件を最適化した結果,規則的に配列する微粒子列が形成される可能性があることを発見した.これは,微粒子の間隔が概ね等間隔の列を形成する現象であるが,プラズマ流の照射が無くなると同時に微粒子列は消滅することから,プラズマ流の荷電粒子による帯電と印加電圧による電場の形成ならびに液面形状の変化による流体力学的作用が相乗して生じた現象であると推察した.そこで,流体力学的作用を明らかにするために,液面の変形や気液界面現象について解析を進めた.また,微粒子を細胞に置換することも検討した.これより,プラズマ流と液面の干渉により,中心から放射状に外側に向かい流動場が形成され,同時に熱が拡散と対流で移動することが明らかになった.一方,微粒子はこれらの流れの影響を大きく受けずにプラズマ流の照射位置付近に留まることから,大気圧プラズマ流による微粒子配列の可能性が示唆された. これらの研究は,連携研究者や海外共同研究先のマックスプランク地球圏外物理研究所(ドイツ)との意見交換や共同実験を通し進めた.
Generation and transport mechanisms of functional radicals and control of biological reactions by a non-equilibrium plasma flow at atmospheric pressure Competitive

SATO Takehiko, MIYAHARA Takashi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2007 - 2008
Optimum Control of Plasma Flow Systems through Multi-Scale Integration Competitive

NISHIYAMA Hideya, HAYASE Toshiyuki, SATO Takehiko, TOKUMASU Takashi, TAKANA Hidemasa

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2005 - 2007

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In the present study, the plasma flow systems with multi-scale interactions are analyzed by using multi-scale control method and multi-scale integration to give the fundamental data for cold spray, plasma assist combustion, arc melting process and gas circuit breaker. The obtained results are as follows. 1. An integrated model for advanced cold spray process is constructed by integrating nano-micro particle flow model and coating formation model. It is clarified that electrostatic acceleration of nano-particle is effective in the presence of shock wave. The deposition process in the cavity is also clarified by comparing with cold spray experiment. 2. The pulsed arc torch and dielectric barrier discharge torch with small input power are developed to produce oxygen and nitrogen radicals and ozone for combustion assist. The effects of applied voltage and frequency on radical concentrations are clarified experimentally. Time evolution of chemical species in an air plasma are also clarified numerically using complex reaction model 3. Real time simulations are conducted for purpose of compactness of gas circuit breaker (GCB) and optimization of arc melting process. It is clarified that rough structure in the exhaust tube enhances the rapid cooling of exhaust hot gas for compact GCB. It is shown that the temperature dependent surface tension and mushy zone effect the melting pool structure in an arc-melting systems.
Sterilization Mechanism by Functional Radical Transportation of BiocompatiblePlasma Flow Competitive

SATO Takehiko, MIYAHARA Takashi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

Category: Grant-in-Aid for Scientific Research (C)

Institution: TOHOKU UNIVERSITY

2005 - 2006

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The radical transportation and its sterilization mechanisms in the nonequilibrium plasma flow were studied in this research project for development of innovative plasma sterilization system to protect human environment from infection by pathogenic microorganism. The results of this research project are summarized as follows. Escherichia coli can be sterilized by a low-temperature argon plasma flow at atmospheric pressure and the inactivation of E. coli results from the destructions of the cytoplasmic membrane and the outer membrane under plasma exposure and the destruction of nucleic acids by exposure to ultraviolet radiation from the plasma source. These were clarified by analyzing the surviving cells and the potassium leakage of cytoplasmic material using ICP-MS, and by observing the morphological aspect by SEM. This result was published in the "Applied Physics Letters" and it was selected for the "Virtual Journal of Biological Physics Research". Optical analysis system for very weak emission was successfully developed, which is capable of measuring intensity of 10^<-8> of that in the discharge region. Using this system, the radical flow fields downstream the discharge region was optically investigated. An innovative catheter sterilization system using a nonequilibrium plasma flow was developed. This system is capable of sterilizing anti-UV and anti-heat bacteria within 5 minutes under the condition of low temperature less than 70 degrees Celsius. The sterilization was caused by a radical flow induced by plasma in the tube, which were clarified by analysis systems for the flow fields and radical emissions. Those results were summarized in the 5 academic papers and 7 patents which includes 1 international patent.
Indoor Environmental Treatment by Atmospheric Nonequilibrium Plasma Flow Competitive

System: Grant-in-Aid for Scientific Research

2001/04 - 2004/03
Study on Nonequilibrium Plasma Flow by Intelligent Control Competitive

System: Grant-in-Aid for Scientific Research

1998/04 - 2004/03
磁気ナノ構造流体の多機能性を利用した先進医療および福祉工学への展開 Competitive

西山秀哉, 佐藤岳彦, 高奈秀匡

Offer Organization: 日本学術振興会

System: 科学研究費助成事業萌芽研究

Category: 萌芽研究

Institution: 東北大学

2003 - 2004

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本研究では、強磁場下では半固体、また、弱磁場下では流動特性を有する安定な磁気粘性流体について、密閉容器内での磁場下における音速特性および矩形断面流路内でのMR流体流動特性を実験的に明らかにした。得られた結果を要約すると、以下のようになる。 1.密閉容器内の水ベース磁性流体、ケロシンベース磁性流体およびMR流体について、超音波伝播特性により磁場強度による音速変化割合や異方性および磁場増減による音速のヒステリシスを実験的に詳細に明らかにした。特にMR流体では、磁場の増加によるクラスター形成で半固体化することにより、磁性流体に比べ、音速変化が著しく顕著になることが明らかになり、音速と磁性粒子の局所濃度や体積弾性率との相関性が示された。 2.磁場下のMR流体中での振動平板荷重試験による粘弾性特性実験により、バネ係数は小振幅で、磁場に対しほぼ直線的に増加する。また、医療用流動バルブの基礎研究として、矩形断面流路内にある磁場下のMR流体流動実験により、1,000Gauss程度の磁場強度で流量が遮断され、圧力分布が急激に変化した。
Multi-dimensional Nano Control of Plasma Flow Systems by Using Fusion Competitive

NISHIYAMA Hideya, HAYASE Toshiyuki, SATO Takehiko, TAKANA Hidemasa

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: TOHOKU UNIVERSITY

2003 - 2004

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‘Plasma Flow Integrated System' is successfully constructed by combining plasma flow with micor/nano particles, radicals and interface with complex interactions and further by integrating with senser and controller. The results obtained in the present study are as follows. (1)The effects of inlet flow rate ratios, swirling flow, gas injection location on needed input power for stable plasma generation and injected reactant gas flow rate are clarified for DC-RF hybrid plasma flow system. Furthermore, the effect of operating pressure on the in-flight characteristics and flow structure is clarified to provide the important element for multi-dimensional control. (2)Based on the statistically optimized DC-RF hybrid plasma flow system for photo-catalytic nano particle synthesis, particle size distribution and crystal structure can be controlled by inlet gas flow rate ratio and quench gas flow rate. (3)Multi-dimensional intelligent control system is developed to stabilize the argon/nitrogen plasma jet impinging onto the substrate for nitridation. Constant control of radiation intensity near substrate and suppression of plasma jet fluctuation are realized by operating back pressure and applied magnetic field. (4)The effects of seeding, applied frequency and trubulent characteristics on phase change and diameter decrease of micro particles are numerically clarified to control particle treatment by ICP with seeding potassium vapor. (5)The effects of quench gas flow rate, applied frequency and DC jet addition on nano particle size distribution for ICP are numerically clarified by realistic nano-particle synthesis model.
非平衡プラズマ流の機能粒子分散制御による低濃度環境汚染物質の浄化 Competitive

佐藤岳彦

Offer Organization: 日本学術振興会

System: 科学研究費助成事業若手研究(B)

Category: 若手研究(B)

Institution: 東北大学

2003 - 2004

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本研究は,微粒子分散非平衡プラズマ流の機能性を最大限に活用し,低濃度の環境汚染物質を浄化する工学的手法の学問体系の構築と実用化への展開をすることを目的とする.本年度は,非平衡プラズマ流中の機能性微粒子の分散,イオン・ラジカル種の濃度場や環境汚染物質の分解プロセスをより詳細に検討するために,前年度で明らかにした高機能性を有するラジカル反応場を実験および理論の両面から明らかにすることを目指した.特に,15年度の実験により得られたデータを初期条件及び境界条件として与え,実験と数値解析を融合し,より現実的な低濃度環境汚染物質の分解プロセスを解明した.また,本研究では極超低濃度で存在する準安定粒子やO, OHラジカルを生成する機能性粒子の確認が極めて重要であるが,通常の光学分析では検出が困難なことが判明したため,生体を用いた検出方法の研究も平行して行った.得られた結果を以下にまとめる. (1)41の化学種と108の化学反応式を数値計算により解くことで,複雑な化学反応流動場が明らかにされた.これより,メタノール分解の主要因は,OHラジカルであることが明らかにされた.O, Hラジカル濃度は入り口で増大してもメタノールの分解効率への影響は小さいことが示された. (2)超高感度分光システムを用いて下流におけるラジカル計測を行ったが,基底状態にある機能性粒子が多いため,十分に計測されなかった.一方,下流に設置した生体に対する影響を調べた結果,プラズマ流中に長寿命の高反応性ラジカルが存在し,下流まで輸送されることが示された.これは,準安定状態にある粒子が下流まで輸送され,生体と衝突した時点でエネルギーを放出し失活していると推測できる.
Improvement of Oxidation and Delamination Resistant Properties in Thermal Barrier Coatings by Means of Plasma Thermal Spraying Competitive

SHOJI Tetsuo, SATO Takehiko, YOKOBORI Toshimitu, NISHIYAMA Hideya, OGAWA Kazuhiro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2001 - 2002

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We suggested that degradation of thermal barrier coating (TBC) was induced by thermal stress due to formation and growth of thermally grown oxide (TGO) in YSZ top coat and MCrAlY bond coat, and by the decrease in bonding strength due to formation of many pores in TGO. In order to inhibit of formation of pores in TGO, an improvement of chemical composition of bond coat material was considered. Ce and Si added MCrAlY bond coat material was developed. As a result, morphology of the TGO changed drastically, namely TGO grew up from the interior of the bond coat like wooden root (wedge shaped TGO). Furthermore, the developed material also inhibited the growth of nickel and cobalt oxides, which have bad influence on formation of pores. And four point bending test was carried out to evaluated the interface strength. The strain of developed bond coat material used for TBC was three times higher than conventional one. Accordingly, the improvement of delamination resistant property using the developed bond coat material was successful. Also, a technique of laser remelting to a bond coat was developed to improve the oxidation resistant property. An objective of laser remelting is to produce a dense and less impure TGO. As a result, if conventional bond material (MCrAlY) was used, TGO thickness decreased and dense alumina formed. Moreover, laser remetled TBC was found to have stronger bending strength than the standard TBC, probably due to disappearance of pores in TGO. The improvement of oxidation and delamination resistant properties was succeeded by means of modification of bond coat material and usage of laser remelting technique.
Multi-sensing Control of Plasma Flow Systems Utilizing Super Functionalization Competitive

NISHIYAMA Hideya, RAMACHANDRAN Kandasamy, SATO Takehiko, HAYASE Toshiyuki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: TOHOKU UNIVERSITY

2001 - 2002

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The experimental and theoretical studies were carried out to establish a multi-sensing control systems for functional plasma flow by utilizing the applied magnetic effect and by seeding vaporized metal and reactive gas and further by injecting fine particles. The main results obtained here are as follows: (1) A multi-sensing control system for plasma jet stabilization was successfully established by controling the radiation intensity and by operating magnetic flux density. The constant value control performance of radiation intensity for sudden flow rate variation and further the control performance of plasma jet dynamic behavior for oscillating inlet flow rate were clarified experimentally. (2) The effects of applied frequency and seeding ratio of potassium on thermofluid field of inductivley coupled plasma and phase change of various kinds of metal powders injected were clarified by numerical simulation. (3) 3D multiphase plasma jet with carrier gas, particles and water droplet in dense loading were numerically analyzed by taking loading effect, phase change, variation of thermophysical properties, compressible effect and complex configuration into account. (4) Computational simulation for plasma spraying process, arc ash melting process and arc-electrodes system were conducted by developing strongly realistic model. The optimal operating conditions and plasma gun geometry were obtained to increase process efficiency and to extend life time. (5) DC-RF hybrid plasma systems were developed by super functionalization. The elongation of plasma flame and uniform temperature distribution were achieved by controlling the flow rate ratio of sheath gas to carrier gas. Furthermore, vortex flow structure in the coil zone was visualized by using PIV system.
環境調和型大気圧非平衡プラズマ流による難処理有害物質の無害化 Competitive

佐藤岳彦

Offer Organization: 日本学術振興会

System: 科学研究費助成事業若手研究(B)

Category: 若手研究(B)

Institution: 東北大学

2001 - 2002

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本研究は,高機能性プラズマ流による難処理有害物質の無害化に向けた新たな学問体系の構築を目的とする.本年度では,ラジカル種を多量に有する高反応流動場の詳細な解明を行うために,前年度の研究成果を基に,非平衡プラズマ流によるラジカル生成反応流路を新たに作製した.本装置は,電極間距離を1mm〜2mmに設定し,印加電圧は方形波で±12kV,印加電圧周波数20Hz,流路断面は円形と矩形とした.オゾンやNO, NO_2の濃度,流速,温度の計測が可能である. 一方,有害物質の分解プロセスにおいて,OやNなどのラジカル反応流動場を明らかにすることは極めて重要であるが,計測が困難なため未だ十分に解明されていない.そこで,22の化学種,88の化学反応を考慮したラジカル混合プラズマ流の2次元数値モデルを新たに構築し,有限要素法を用い作製した反応流路形状に適用し,反応流動場を詳細に検討した. 具体的には,(1)速度及び温度分布は実験結果と数値解析に良好な一致が得られた.(2)NOおよびNO_2濃度分布は,放電部下流で最大値を示しその後下流方向へ減少する.計算結果は,実験結果とNOに関しては定性的な一致を示すが,NO_2では一致しないため,入口条件等の最適化が重要である.また,電極間距離を狭くするとNO, NO_2濃度共に減少すること,矩形断面流路の方が円形断面流路より流速の影響が大きいこと等が明らかにされた.(3)実験結果と数値解析の統合により,N, O等のラジカル種の二次元分布等,活性種解析が可能であることが示された. 本研究では,実験結果と数値解析を統合する手法を確立し,従来解明が困難であったラジカル反応流動場の解明や,反応流路形状やガス流量の影響を明らかにした.本手法を用いることで,有害物質無害化プロセス機構の解明や高効率な無害化システムの構築が進展することを確信している.
Intelligent Electromagnetic Control of Complex Interactions in Plasma Flow Systems Competitive

NISHIYAMA Hideya, SATO Takehiko, HAYASE Toshiyuki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B).

Category: Grant-in-Aid for Scientific Research (B).

Institution: TOHOKU UNIVERSITY

1999 - 2000

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The experimental and theoretical studies were carried out to establish the intelligent electromagnetic control of plasma flow system, utilizing the complex interactions between plasma flow and mixed reactive gas and also injected fine particles. The main results obtained here are as follows : (1) A numerical model was proposed to clarify the complex plasma-particle-EM field in a pipe or complex configuration. The effects of RF EM field, particle injection and particle composition and nozzle angle on the plasma characteristics and particle behavior were clarified. (2) A virtual plasma spraying process was conducted using the above numerical model to clarify the optimum spraying conditions for high quality coating. (3) The effects of mixing gas on the plasma volume, radiation, and thermofluid field of nonequilibrium RF plasma were clarified experimentally. Furthermore, the effects of injection locations, inlet flow rates of chemical gases on the thermofluid field and species fields were clarified theoretically using multi-compoment model. (4) A feed back control system was successfully established by sensing the radiation and operating the discharge current, magnetic coil current. The control perfomance by changing discharge current or applying magnetic field was clarified.
電磁場下のプラズマ流による環境汚染物質の分離無害化 Competitive

佐藤岳彦

Offer Organization: 日本学術振興会

System: 科学研究費助成事業奨励研究(A)

Category: 奨励研究(A)

Institution: 東北大学

1999 - 2000

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本研究では,環境汚染物質の無害化に向けた新たな学問体系の構築を目的とする.本年度では微粒子混相プラズマ流の電磁場下での挙動を,非定常圧縮性を考慮した電磁熱流動場の2次元数値モデルを構築することで,微粒子特性への電磁場効果を詳細に検討した.また,新たに導入した電磁熱流動場解析プログラムにより多種のガスとの混合や化学反応・分解等の解析が可能となった.さらに,前年度に引き続きプラズマ流の実験的解明を進めた.得られた知見や基礎資料等を以下に記す. 1.熱流動場の解析熱流動場は,電磁場印加による加熱効果が大きく,特に下流部において高温領域が大きく増大し,有害ガス分解において分解効率の向上に大きく寄与する知見が得られた. 2.微粒子特性の解析微粒子はノズル形状,注入条件やプラズマ作動条件によりその分散が大きく変化し,電磁場印加により大きな加熱効果を示す事を新たに知見した.これは,触媒微粒子をプラズマ中に効果的に分散させ有害ガスを選択的に分解させたり,有害微粒子を効果的に熱分解し無害化する等の工学的手法の基礎資料となる. 3.プラズマ流の不安定特性と非対称性プラズマ流の不安定性は,磁場強度や放電電流を増大させることで抑制できる.また,DCプラズマ流をRFプラズマ流に貫入させたり,旋回ガスの注入やRFコイルの非対称性によりプラズマ流が下流においても熱流動場を示す事を新たに知見した.
反応性プラズマ流の機能制御による環境汚染物質の浄化 Competitive

西山秀哉, 佐藤岳彦, 渡辺隆行

Offer Organization: 日本学術振興会

System: 科学研究費助成事業萌芽的研究

Category: 萌芽的研究

Institution: 東北大学

1998 - 1999

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本研究では、電離や解離等の化学反応を伴う反応性プラズマ流の機能性を熱流動場や電磁場と関連づけて制御することにより、地球環境汚染物質の分解や浄化のための基盤技術を確立するために、以下の成果を得た。 1.反応速度係数が全く異なる電離と解離反応が共存するアルゴン-窒素非平衡高周波誘導プラズマに関して、7種の化学種の生成・消滅を考慮した多成分モデルによる濃度場および熱流動場解析のための基礎式を新たに提示した。数値シミュレーションにより、窒素原子、窒素原子イオン、窒素分子イオン等の反応化学種の分布は、温度分布に対応するばかりでなく、再循環領域の存在の有無、あるいは、窒素を注入する位置に非常に影響を受けることが明らかになった。 2.高周波誘導非平衡アルゴンプラズマに二次ガスとしてヘリウムを注入した場合、注入位置や注入ガイド長さによるヘリウム濃度分布とプラズマ面積およびプラズマ温度分布との相関を実験的に明らかにした。 3.非平衡アルゴンプラズマジェット二次ガスとしてヘリウムと反応性窒素を注入した場合、それらの濃度分布と熱流体力学特性およびプラズマパラメータとの相関を明らかにし、特に化学反応過程の影響も検討した。 4.溶融灰から高周波誘導プラズマ処理により蒸発・分解と凝縮プロセスより、鉛や亜鉛を回収する技術を確立した。以上、1〜4より環境汚染物質を分解・浄化するには、温度場に強く依存する化学反応を精密に制御することが重要であることを指摘した。
Intelligent Electromagnetic Control of Chemically Reactive Plasma Flow by Infomations Competitive

NISHIYAMA Hideya, SATO Takehiko, KOBAYASHI Hideaki, KAMIYAMA Shinichi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: TOHOKU UNIVERSITY

1997 - 1998

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The experimental and theoretical study was conducted to control chemically reactive plasma flow by applying the electromagnetic field intelligently, utilizing the informations of mixing and interactions in the plasma flow. The main results obtained here are as follows : (1) The numerical analysis was conducted to clarify the control characteristics of thermofluid flow and plasma parameters in the nonequilibrium RF plasma flow by injecting secondary gas. (2) The numerical analysis was conducted to clarify the control characteristics of particle dispersion and particle heating in the supersonic plasma jet by applying the RF magentic field and by changing particle parameters and nozzle angle. (3) The numerical analysis was conducted to clarify the control characteristics of thermofluid flow and plasma parameter in the mixed nonequilibrium plasma flow in the magnetic duct. (4) The experimental study was conducted to clarify the control characteristics of the nonequilibrium plasma boundary layer along the biased flat plate by applying the magentic field. (5) The experimental study was conducted to clarify the control characteristics of nonequilibrium plasma jet by mixing with other functional gases in the applied magnetic field.

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Teaching Experience 8

Functional Fluids Engineering　Tohoku University
Bio-Plasma Fluid Engineering　Tohoku University
Flow Visualization Project　Tohoku University
流れの科学　東北大学
Intelligent Fluid Systems　Tohoku University
Fluid Mechanics I　Tohoku University
自然界の構造　東北大学
基盤流体力学　東北大学

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Social Activities 13

実行委員長, 片平まつり2017

東北大学

2017/10/07 - 2017/10/08
放送大学面接授業

2015/05/23 - 2015/05/24

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「プラズマの科学と応用」に関する講義
放送大学面接授業

2014/07/19 - 2014/07/20

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「プラズマの科学と応用」に関する講義
みやぎ県民大学「学校等開放講座」流体科学研究所「ながれ」

2013/07/05 - 2013/07/26

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「プラズマのながれ」に関する講演
みやぎ県民大学「学校等開放講座」流体科学研究所「ながれ」

2011/08/26 - 2011/09/30

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「プラズマのながれ」に関する講演
みやぎ県民大学学校等開放講座「ながれ」

2009/08/28 - 2009/09/25

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プラズマのながれ
みやぎ県民大学学校等開放講座「ながれを科学する」

2008/09/12 - 2008/10/10

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プラズマの流れ
東北大学機械系フォーラム2008 in Tokyo

2008/05/09 - 2008/05/10

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東北大学工学部機械系、流体科学研究所および多元物質科学研究所の研究展示会
ASTEC2008 （国際先端表面技術展・会議）

2008/02/13 - 2008/02/15

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東北大学流体科学研究所ナノ・マイクロクラスターとして出展し、「大気圧プラズマ流による医療分野への応用」のパネルを展示
SEMICON Japan

2007/12/05 - 2007/12/07

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東北大学流体科学研究所ナノ・マイクロクラスターとして出展し、「プラズマ流の機能性と応用、大気圧プラズマ」のパネルを展示
みやぎ県民大学大学開放講座「ながれを科学する」

2006/09/01 - 2006/09/29

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プラズマの流れ－暮らしを豊にするプラズマの科学を解き明かす－
ポスターによる新学術領域のアウトリーチ向け活動

2016/04/26 -

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名古屋大学「プラズマ科学プラットフォーム」開所記念講演会・見学会での、ポスターによる新学術領域のアウトリーチ向け活動ポスタータイトル：「ナノプラズマ制御技術の創成と局所照射による生体機能制御～液中ナノスケールプラズマの生成制御～」「～プラズマ刺激による細胞膜輸送の機序解明～」
Swiss Federal Institute of Technology at Lausanne (EPFL)

2009/10/09 -

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Effect of Plasma Generation on Characteristics of Water and Its Mechanism

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Media Coverage 1

東北大学の新世紀：プラズマ効果を運ぶ流れ

東日本放送

2009/06/15

Type: TV or radio program

Academic Activities 7

Session Organizer, Session Chair, 20th International Conference on Flow Dynamics (ICFD2023) and 23rd International Symposium on Advanced Fluid Information (AFI-2023)

ハイブリッド開催（仙台国際センターおよびオンライン）

2023/11/06 - 2023/11/08

Activity type: Competition, symposium, etc.
Session Organizer, Session Chair, 19th International Conference on Flow Dynamics (ICFD2022) and 22nd International Symposium on Advanced Fluid Information (AFI-2022)

ハイブリッド開催（仙台国際センターおよびオンライン）

2022/11/09 - 2022/11/11

Activity type: Competition, symposium, etc.
実行委員長, 第46回静電気学会全国大会

琉球大学

2022/09/07 - 2022/09/10

Activity type: Competition, symposium, etc.
Session Organizer, Session Chair, 18th International Conference on Flow Dynamics (ICFD2021) and 21st International Symposium on Advanced Fluid Information (AFI-2021)

オンライン開催

2021/10/27 - 2021/10/29

Activity type: Competition, symposium, etc.
Session Organizer, Session Chair, 17th International Conference on Flow Dynamics (ICFD2020) and 20th International Symposium on Advanced Fluid Information (AFI-2020)

Online Conference

2020/10/28 - 2020/10/30

Activity type: Competition, symposium, etc.
Session Organizer, Session Chair, 16th International Conference on Flow Dynamics (ICFD2019) and 19th International Symposium on Advanced Fluid Information (AFI-2019)

仙台国際センター

2019/11/06 - 2019/11/08

Activity type: Competition, symposium, etc.
Chair, International Workshop on Environmental Engineering 2019 (IWEE2019)

Bankoku Shinryokan Resort MICE Facility (Nago City, Okinawa)

2019/06/25 - 2019/06/28

Activity type: Competition, symposium, etc.

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Other 37

大気圧プラズマ流の応用開発に関する研究

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大気圧プラズマ流による微細気泡の生成計測や滅菌装置の開発
小型プラズマ滅菌装置の開発

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次世代オートクレーブの開発
小型可搬式低温プラズマ滅菌装置の開発

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小型可搬式低温プラズマ滅菌装置の開発
大気圧プラズマに関する研究

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大気圧プラズマに関する研究
プラズマ流によるウイルスの不活性化に関する研究

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プラズマ流によるウイルスの不活性化に関する研究
大気圧プラズマ流と液体の干渉機構

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大気圧プラズマ流と液体の干渉機構
プラズマを用いたバイオフィルム産生グラム陰性桿菌の環境殺菌に関する研究

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プラズマを用いたバイオフィルム産生グラム陰性桿菌の環境殺菌に関する研究
大気圧水蒸気プラズマ滅菌法による次世代オートクレーブの開発

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大気圧水蒸気プラズマ滅菌法による次世代オートクレーブの開発
大気圧プラズマに関する研究

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大気圧プラズマに関する研究
非公開

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非公開
プラズマ流の細胞反応機構

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プラズマ流の細胞反応機構
細胞反応機構に関する研究

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細胞反応機構に関する研究
微細気泡の生体材料への応用に関する研究

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微細気泡の生体材料への応用に関する研究
非公開

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非公開
大気圧水蒸気プラズマ流による滅菌システムの開発

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大気圧水蒸気プラズマ流による滅菌システムの開発
微粒子プラズマに関する研究

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微粒子プラズマに関する研究
大気圧水蒸気プラズマ流による滅菌システムの開発

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大気圧水蒸気プラズマ流による滅菌システムの開発
非平衡プラズマによる超音速燃焼促進技術の開発に向けた基礎研究

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非平衡プラズマによる超音速燃焼促進技術の開発に向けた基礎研究
プラズマ分析に関する研究

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プラズマ分析に関する研究
プラズマ流と水の干渉機構

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プラズマ流と水の干渉機構
水蒸気プラズマ滅菌装置の開発

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水蒸気プラズマ滅菌装置の開発
滅菌ガス生成制御に関する研究

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滅菌ガス生成制御に関する研究
細管内壁の滅菌機構の解明

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細管内壁の滅菌機構の解明
大気圧プラズマ流によるカテーテル滅菌装置の開発

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大気圧プラズマ流によるカテーテル滅菌装置の開発
プラズマ分析の開発に関する研究

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プラズマ分析の開発に関する研究
細管内壁の滅菌システム開発

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細管内壁の滅菌システム開発
滅菌ガス生成に関する研究

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滅菌ガス生成に関する研究
プラズマ流の滅菌システム

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プラズマ流の滅菌システム
医療用プラズマの解析

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医療用プラズマの解析
プラズマクラスターの光学的研究

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プラズマクラスターの光学的研究
プラズマ流のラジカル輸送機構とプラズマ医療

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プラズマ流のラジカル輸送機構とプラズマ医療
プラズマ溶射の安定化および高効率化に関する研究

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プラズマ溶射の安定化および高効率化に関する研究
汎用プラズマ滅菌システムの開発

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汎用プラズマ滅菌システムの開発
プラズマ滅菌装置の開発

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プラズマ滅菌装置の開発
汎用滅菌システム開発研究

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汎用滅菌システム開発研究
プラズマ流の滅菌機構

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プラズマ流の滅菌機構
Optimization for Plasma Spraying Processes by Numerical Simulation

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プラズマ溶射プロセスの最適化数値シミュレーション

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