Details of the Researcher

PHOTO

Yoshinori Sato
Section
Graduate School of Environmental Studies
Job title
Professor
Degree

  • 博士（工学） (Tohoku University)

Research History 11

  • 2025/04 - Present
    Tohoku University　Graduate School of Environmental Studies, Department of Environmental Studies for Advanced Society　Professor

  • 2010/04 - 2025/03
    Tohoku University　Graduate School of Environmental Studies Department of Environmental Studies for Advanced Society　Associate Professor

  • 2014/04 - 2019/03
    Shinshu University　Interdisciplinary Cluster for Cutting Edge Research, Institute for Biomedical Sciences

  • 2008/10 - 2012/03
    Japan Science and Technology Agency

  • 2007/04 - 2010/03
    東北大学 大学院環境科学研究科　助教

  • 2004/04 - 2007/03
    東北大学 大学院環境科学研究科　助手

  • 2003/04 - 2004/03
    東北大学大学院工学研究科電子工学専攻　21世紀COE特別研究員

  • 2002/04 - 2003/03
    東北大学学際科学研究センター　研究機関研究員

  • 2000/11 - 2000/12
    Gothenburg University and Chalmers University of Technology, School of Physics and Engineering Physics　大学院生

  • 1998/11 - 1999/03
    科学技術振興事業団 戦略的基礎研究　研究員

  • 1998/06 - 1998/10
    工業技術院 物質工学工業技術研究所　特別技術職員

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Committee Memberships 11

  • Scientific Reviews　Editorial Board Members

    2026/04 - Present

  • 資源・素材学会 東北支部　幹事

    2026/02 - Present

  • Scientific Reports　Editorial Board Members

    2014/06 - Present

  • ナノカーボンバイオシンポジウム　実行委員

    2014/04 - Present

  • 資源・素材学会 東北支部　幹事（庶務）

    2024/02 - 2026/01

  • 資源・素材学会 東北支部　幹事（会計）

    2011/04 - 2017/03

  • 第8回 資源・素材学会東北支部 若手の会　会長

    2015/04 - 2015/11

  • 第43回フラーレン・ナノチューブ・グラフェン総合シンポジウム　実行委員

    2012/04 - 2012/09

  • エネルギー環境教育研究会　委員

    2004/04 - 2007/03

  • 資源・素材2024（秋田） “令和6年度 資源・素材関係学協会合同秋季大会”　実行委員

    2024/09 -

  • 資源・素材2012（秋田） “平成24年度資源・素材関係学協会合同秋季大会”　実行委員

    2012/09 -

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Professional Memberships 9

  • The Carbon Society of Japan

    2012/08 - Present

  • American Chemical Society

    2005/08 - Present

  • The Electrochemical Society

    2000/04 - Present

  • The Mining and Materials Processing Institute of Japan

    1999/04 - Present

  • The Fullerenes, Nanotubes and Graphene Research Society

    1999/01 - Present

  • The Society of Fluorine Chemistry, Japan

    2017/09 - 2023/08

  • Materials Research Society

    2005/12 - 2019/12

  • The Materials Research Socieyt of Japan (MRS-J)

    2015/04 - 2019/03

  • The Surface Science Society of Japan

    2009/05 - 2015/03

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Research Interests 7

  • 脱フッ素化

  • 異元素ドーピング

  • フッ素化

  • 表面・界面

  • Energy devices

  • Carbon Nanotubes

  • Carbon Nanomaterials

Research Areas 1

  • Nanotechnology/Materials / Structural and functional materials /

Awards 8

  1. Nanoscience and Technology Session Best Contribution Award at the Materials Today Asia 2014

    2014/12　ELSEVIER

  2. Best Poster Awards at the small sciences symposium: Frontiers in Nanomedicine

    2012/12　Wiley-VCH

  3. 平成24年度石田（實）記念財団研究奨励賞

    2012/09/20　財団法人 石田（實）記念財団　高結晶単層カーボンナノチューブを用いた可視・近赤外光応答型光熱蓄電池の創製

  4. 第17回 トーキン科学技術振興財団研究奨励賞

    2007/03/05　財団法人 トーキン科学技術振興財団　高強度・高導電性を目指したバインダーフリーカーボンナノチューブ繊維の開発

  5. 平成18年度東北大学大学院環境科学研究科研究奨励賞

    2006/12/15　東北大学

  6. The most popular cover in 2005

    2006/03/01　Royal Society of Chemistry　Royal Society of Chemistryの「Molecular BioSystems」の2005年における最優秀カバー

  7. 2005 Materials Research Society Fall Meeting, Symposium S, Top 3 Best Poster Award

    2005/11/29　Materials Research Society　Top 3 Best Poster Award

  8. 財団法人 青葉工学振興会 第7回 「研究奨励賞」

    2001/12/10　財団法人青葉工学振興会

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Papers 156

  1. Self-organized thermoelectric conversion systems on the deep seafloor Peer-reviewed

    Atsushi Okamoto, Misaki Takahashi, Yoshinori Sato, Ryoichi Yamada, Kentaro Toda, Tomonori Ihara, Tatsuo Nozaki

    Geology　54　(3)　275-279　2026/01/08

    Publisher: Geological Society of America

    DOI： 10.1130/g53463.1 　

    ISSN： 0091-7613

    eISSN： 1943-2682

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    Abstract Deep-sea hydrothermal vents are sites where thermal energy from Earth’s interior is emitted into the ocean, and sulfide- or sulfate-rich chimneys form by mixing of hydrothermal fluids and ambient cold seawater. Sulfide minerals are semiconductors and can convert thermal to electrical energy. However, regardless of the high-temperature difference (up to 400 °C) between vent fluids and seawater, the significance of thermoelectric power generation by chimneys is poorly understood. We measured the electrical conductivity and thermoelectromotive force (TEMF) of typical sulfide minerals and each part of zoned chimney walls from seafloor hydrothermal vents to evaluate their thermoelectric conversion. Young and porous chimneys consist mainly of fine-grained sulfate and Zn sulfide, with extremely low electrical conductivity, resulting in no thermoelectric conversion. In contrast, mature chimneys with inner walls rich in Cu, Fe, and Pb sulfides are n-type semiconductors with a high thermoelectric conversion performance. Given a temperature difference of 200–300 °C between the vent fluids and ambient seawater, the TEMF of the mature chimneys approaches 10–210 mV, which is comparable to the redox potential between vent fluids and seawater (~500 mV). This TEMF could play an essential role as a power source to overcome the overpotential required for the redox reactions at both sides of the chimney walls. Our findings suggest that seafloor chimneys are a unique self-organized thermoelectric conversion system that supplies substantial electrical energy to deep-sea ecosystems.

  2. Synergized Effects of Amino Acids and NaCl to Enhance Silicate Mineral Dissolution in Aqueous Environments for Efficient Atmospheric CO2 Removal Peer-reviewed

    Jiajie Wang, Sena Kikuchi, Noriyoshi Tsuchiya, Yoshinori Sato, Mei-Fang Chien, Noriaki Watanabe

    Environmental Science & Technology　58　(50)　22114-22123　2024/12/02

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.est.4c07526 　

    ISSN： 0013-936X

    eISSN： 1520-5851

  3. Characteristics of congruent dissolution of silicate minerals enhanced by chelating ligand under ambient conditions Peer-reviewed

    Jiajie Wang, Astin Nurdiana, Yoshinori Sato, Noriaki Watanabe, Noriyoshi Tsuchiya

    American Mineralogist　109　(6)　1096-1105　2024/06/01

    Publisher: Mineralogical Society of America

    DOI： 10.2138/am-2023-9025 　

    ISSN： 0003-004X

    eISSN： 1945-3027

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    Abstract Natural and anthropogenic chelating ligands play important roles in promoting mineral dissolution during water-rock interactions. To address the remaining issue of how chelating ligands participate in the dissolution of minerals, this study investigated the dissolution characteristics of seven types of silicate minerals in the presence of a chelating ligand, N,N-bis(carboxymethyl)-L-glutamic acid (GLDA), which is a glutamic acid derivative, through batch dissolution experiments. The results showed that the dissolution of all types of silicate minerals, i.e., olivine (nesosilicate), epidote (sorosilicate), tourmaline (cyclosilicate), enstatite (single-chain inosilicate), hornblende (double-chain inosilicate), biotite (phyllosilicate), and anorthite (tectosilicate), can be enhanced by up to two orders of magnitude at both pH 4 and 8. The chelating ligand particularly facilitated the dissolution of minerals with a higher Al content, such as tourmaline and anorthite. Furthermore, the presence of chelating ligands enhanced the leaching of not only metals but also Si from minerals, resulting in a more congruent characteristic of mineral dissolution. A possible mechanism is that the chelating ligand adsorbs onto the negatively charged the mineral surface, which attracts more H+ and polarizes Si-O and Mg-O bonds, thereby dissolving the minerals at a faster rate. These results have significant implications for understanding the dissolution of minerals in nature and for the application of chelating agents in geological and materials engineering.

  4. Are Non-Six-Membered Ring Defects Formed in Single-Walled Carbon Nanotubes Treated by a Fluorination–Defluorination Process? Invited Peer-reviewed

    Yoji Omoto, Hiromu Morita, Yoshinori Sato, Tetsuo Nishida, Kenichi Motomiya, Hirokazu Katsui, Takashi Goto, Yoshinori Sato

    Nanomaterials　13　(6)　1086-1086　2023/03/17

    Publisher: MDPI AG

    DOI： 10.3390/nano13061086 　

    eISSN： 2079-4991

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    Single-walled carbon nanotubes (SWCNTs) modified by introducing non-six-membered ring defects, such as five- and seven-membered rings, have attracted considerable attention because their conductivity is enhanced by increasing the electronic density of states at the Fermi energy level. However, no preparation method exists to efficiently introduce non-six-membered ring defects into SWCNTs. Herein, we attempt to introduce non-six-membered ring defects into SWCNTs by defect rearrangement of the nanotube framework using a fluorination–defluorination process. Defect-introduced SWCNTs were fabricated from SWCNTs fluorinated at 25 °C for different reaction times. Their structures were evaluated, and their conductivities were measured by operating a temperature program. Structural analysis of the defect-induced SWCNTs using X-ray photoelectron spectroscopy, Raman spectroscopy, high-resolution transmission electron microscopy, and visible–near-infrared spectroscopy did not reveal the presence of non-six-membered ring defects in the SWCNTs but indicated the introduction of vacancy defects. Meanwhile, conductivity measurements performed by operating a temperature program showed that the defluorinated SWCNTs prepared from SWCNTs fluorinated for 3 min (deF-RT-3m) exhibited decreased conductivity owing to the adsorption of water molecules to non-six-membered ring defects, thereby implying the possibility of non-six-membered ring defects being introduced into deF-RT-3m.

  5. Controlled introduction of defects into single-walled carbon nanotubes via a fluorination–defluorination strategy using xenon difluoride and their alkaline oxygen reduction reaction catalytic activity Peer-reviewed

    Yokoyama, K., Mamiya, I., Morita, H., Sato, Y., Sato, K., Nishida, T.

    Journal of Colloid and Interface Science　627　168-179　2022/12

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcis.2022.07.019 　

    ISSN： 1095-7103 0021-9797

  6. 脱フッ素化により架橋結合させた多層カーボンナノチューブヤーンの機械的性質 Invited

    佐藤 義倫

    NEW DIAMOND　37　20-23　2021/10

  7. Corrigendum to “Slippage-inhibiting effect of interfacial cross-linking of nanotubes by defluorination on the mechanical properties of free-standing multi-walled carbon nanotube yarns: Comparison with individual multi-walled carbon nanotubes” [Carbon 179 (2021) 1–12] Carbon (2021) 179 (1–12), (S0008622321003973), (10.1016/j.carbon.2021.03.066)) Peer-reviewed

    Nishizaka, H., Kimura, T., Sato, Y., Yamamoto, M., Nishida, T., Motomiya, K.

    Carbon　182　865-866　2021/09

    Publisher: Elsevier BV

    DOI： 10.1016/j.carbon.2021.06.001 　

    ISSN： 0008-6223

  8. Slippage-inhibiting effect of interfacial cross-linking of nanotubes by defluorination on the mechanical properties of free-standing multi-walled carbon nanotube yarns: Comparison with individual multi-walled carbon nanotubes Peer-reviewed

    Nishizaka, H., Kimura, T., Sato, Y., Yamamoto, M., Nishida, T., Motomiya, K.

    Carbon　179　1-12　2021/07

    Publisher: Elsevier BV

    DOI： 10.1016/j.carbon.2021.03.066 　

    ISSN： 0008-6223

  9. フッ素化－脱フッ素化を用いた炭素ナノ材料の表面改質とその機能 Invited

    佐藤 義倫

    日本無機薬品協会会報　546　21-24　2021/04

  10. Functionalization of primary amine groups to single-walled carbon nanotubes by reacting fluorinated SWCNTs with ammonia gas at a low temperature Peer-reviewed

    Koji Yokoyama, Yoshinori Sato, Masashi Yamamoto, Tetsuo Nishida, Takashi Itoh, Kenichi Motomiya, Yoshinori Sato

    Carbon　172　360-371　2021/02

    DOI： 10.1016/j.carbon.2020.10.038 　

    ISSN： 0008-6223

    eISSN： 1873-3891

  11. Oxygen reduction reaction catalytic activity of carbon nanotubes in aqueous acid solutions Invited Peer-reviewed

    Yoshinori Sato

    TANSO　2020　(295)　185-193　2020/11/15

    Publisher: The Carbon Society of Japan

    DOI： 10.7209/tanso.2020.185 　

    ISSN： 0371-5345

    eISSN： 1884-5495

  12. Pt-Pd Nanoalloy for the Unprecedented Activation of Carbon-Fluorine Bond at Low Temperature Peer-reviewed

    Raghu Nath Dhital, keigo nomura, Yoshinori Sato, Setsiri Haesuwannakij, Masahiro Ehara, Hidehiro Sakurai

    Bulletin of the Chemical Society of Japan　93　(10)　1180-1185　2019/11/29

    Publisher: The Chemical Society of Japan

    DOI： 10.26434/chemrxiv.11145098.v1 　

    ISSN： 1348-0634 0009-2673

    eISSN： 1348-0634

  13. Highly Crystalline Single-Walled Carbon Nanotube Field Emitters: Energy-Loss-Free High Current Output and Long Durability with High Power Peer-reviewed

    Shimoi, N., Sato, Y., Tohji, K.

    ACS Applied Electronic Materials　1　(2)　163-171　2019/02/26

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsaelm.8b00008 　

    ISSN： 2637-6113

    eISSN： 2637-6113

  14. Work function, carrier type, and conductivity of nitrogen-doped single-walled carbon nanotube catalysts prepared by annealing via defluorination for efficient oxygen reduction reaction Peer-reviewed

    Yokoyama, K., Sato, Y., Yamamoto, M., Nishida, T., Motomiya, K., Tohji, K., Sato, Y.

    Carbon　142　518-527　2019/02

    Publisher: Elsevier BV

    DOI： 10.1016/j.carbon.2018.10.052 　

    ISSN： 0008-6223

  15. Electrochemical capacitors using nitrogen-doped vertically aligned multi-walled carbon nanotube electrodes prepared by defluorination Peer-reviewed

    Rei Nonomura, Takashi Itoh, Yoshinori Sato, Koji Yokoyama, Masashi Yamamoto, Tetsuo Nishida, Kenichi Motomiya, Kazuyuki Tohji, Yoshinori Sato

    Carbon　132　539-547　2018/06

    Publisher: Elsevier BV

    DOI： 10.1016/j.carbon.2018.02.071 　

    ISSN： 0008-6223

  16. Is the tensile strength of carbon nanotubes enhanced by supported materials?: Effect of supported amorphous alumina nanoparticles on the tensile strength of carbon nanotubes Peer-reviewed

    Kimura, T., Suzuki, H., Zhang, M., Yamamoto, G., Hashida, T., Motomiya, K., Tohji, K., Sato, Y.

    Carbon　118　339-342　2017/07

    DOI： 10.1016/j.carbon.2017.03.057 　

    ISSN： 0008-6223

    eISSN： 1873-3891

  17. Low-power-consumption flat-panel light-emitting device driven by field-emission electron source using high-crystallinity single-walled carbon nanotubes Peer-reviewed

    Norihiro Shimoi, Daisuke Abe, Kazuyuki Matsumoto, Yoshinori Sato, Kazuyuki Tohji

    Japanese Journal of Applied Physics　56　(6)　065101-065101　2017/06/01

    DOI： 10.7567/jjap.56.065101 　

    ISSN： 0021-4922

    eISSN： 1347-4065

  18. A three-dimensional block structure consisting exclusively of carbon nanotubes serving as bone regeneration scaffold and as bone defect filler Peer-reviewed

    Tanaka, M., Sato, Y., Haniu, H., Nomura, H., Kobayashi, S., Takanashi, S., Okamoto, M., Takizawa, T., Aoki, K., Usui, Y., Oishi, A., Kato, H., Saito, N.

    PLoS ONE　12　(2)　e0172601-e0172601　2017/02/24

    DOI： 10.1371/journal.pone.0172601 　

    ISSN： 1932-6203

    eISSN： 1932-6203

  19. In Vitro and In Vivo Evaluation of a Three-Dimensional Porous Multi-Walled Carbon Nanotube Scaffold for Bone Regeneration Peer-reviewed

    Manabu Tanaka, Yoshinori Sato, Mei Zhang, Hisao Haniu, Masanori Okamoto, Kaoru Aoki, Takashi Takizawa, Kazushige Yoshida, Atsushi Sobajima, Takayuki Kamanaka, Hiroyuki Kato, Naoto Saito

    Nanomaterials　7　(2)　46-46　2017/02/17

    DOI： 10.3390/nano7020046 　

    ISSN： 2079-4991

    eISSN： 2079-4991

  20. Rapid Access to Nitrogenous Heterobicycles via RhIII-Catalyzed Isomerization from Alkynes to Allenes

    Nakamura, I., Takeda, K., Sato, Y., Terada, M.

    Chemistry - A European Journal　23　(32)　2017

    DOI： 10.1002/chem.201701704 　

    ISSN： 1521-3765 0947-6539

  21. Influence of supported PtPd nanoparticles on the tensile strength of individual multi-walled carbon nanotubes: Strength decrease by the interaction of metal and nanotube Peer-reviewed

    Suzuki, H., Kimura, T., Yamamoto, G., Hashida, T., Motomiya, K., Tohji, K., Sato, Y.

    RSC Advances　7　(79)　49917-49922　2017

    DOI： 10.1039/c7ra09340c 　

    ISSN： 2046-2069

    eISSN： 2046-2069

  22. In Situ Electrochemical Raman Spectroscopy of Air-Oxidized Semiconducting Single-Walled Carbon Nanotube Bundles in Aqueous Sulfuric Acid Solution Peer-reviewed

    Shin-ichi Ogino, Takashi Itoh, Daiki Mabuchi, Koji Yokoyama, Kenichi Motomiya, Kazuyuki Tohji, Yoshinori Sato

    The Journal of Physical Chemistry C　120　(13)　7133-7143　2016/04

    DOI： 10.1021/acs.jpcc.5b12057 　

    ISSN： 1932-7447

  23. Asymmetric and symmetric absorption peaks observed in infrared spectra of CO2 adsorbed on TiO2 nanotubes Peer-reviewed

    Koichiro Yamakawa, Yoshinori Sato, Katsuyuki Fukutani

    The Journal of Chemical Physics　144　(15)　154703(1)-154703(7)　2016/04

    DOI： 10.1063/1.4946790 　

    ISSN： 0021-9606

    eISSN： 1089-7690

  24. Efficiency and long-term durability of a nitrogen-doped single-walled carbon nanotube electrocatalyst synthesized by defluorination-assisted nanotube-substitution for oxygen reduction reaction Peer-reviewed

    Koji Yokoyama, Shun Yokoyama, Yoshinori Sato, Kazutaka Hirano, Shinji Hashiguchi, Kenichi Motomiya, Hiromichi Ohta, Hideyuki Takahashi, Kazuyuki Tohji, Yoshinori Sato

    Journal of Materials Chemistry A　4　(23)　9184-9195　2016

    DOI： 10.1039/c6ta02722a 　

    ISSN： 2050-7488

    eISSN： 2050-7496

  25. Defluorination-assisted nanotube-substitution reaction with ammonia gas for synthesis of nitrogen-doped single-walled carbon nanotubes Peer-reviewed

    Koji Yokoyama, Yoshinori Sato, Kazutaka Hirano, Hiromichi Ohta, Kenichi Motomiya, Kazuyuki Tohji, Yoshinori Sato

    Carbon　94　1052-1060　2015/11

    DOI： 10.1016/j.carbon.2015.07.090 　

    ISSN： 0008-6223

    eISSN： 1873-3891

  26. Mechanical properties of boron-added carbon nanotube yarns Invited Peer-reviewed

    Sato, Y., Zhang, M., Tohji, K.

    Handbook of Polymer Nanocomposites. Processing, Performance and Application: Volume B: Carbon Nanotube Based Polymer Composites　61-73　2015/01

    Publisher: Springer Berlin Heidelberg

    DOI： 10.1007/978-3-642-45229-1_39 　

  27. Significant stabilization of palladium by gold in the bimetallic nanocatalyst leading to an enhanced activity in the hydrodechlorination of aryl chlorides Peer-reviewed

    Sangita Karanjit, Atchaleeya Jinasan, Ekasith Samsook, Raghu N. Dhital, Kenichi Motomiya, Yoshinori Sato, Kazuyuki Tohji, Hidehiro Sakurai

    Chemical Communications　51　(64)　12724-12727　2015

    DOI： 10.1039/c5cc04432d 　

    ISSN： 1359-7345

    eISSN： 1364-548X

  28. Structural and Electrochemical Characterization of Ethylenediaminated Single-Walled Carbon Nanotubes Prepared from Fluorinated SWCNTs Peer-reviewed

    Kohei Bushimata, Shin-ichi Ogino, Kazutaka Hirano, Tatsuhiro Yabune, Kenta Sato, Takashi Itoh, Kenichi Motomiya, Koji Yokoyama, Daiki Mabuchi, Hikaru Nishizaka, Go Yamamoto, Toshiyuki Hashida, Kazuyuki Tohji, Yoshinori Sato

    The Journal of Physical Chemistry C　118　(27)　14948-14956　2014/07

    DOI： 10.1021/jp503124n 　

    ISSN： 1932-7447

  29. Efficient synthesis of eight-membered nitrogen heterocycles from O-propargylic oximes by rhodium-catalyzed cascade reactions

    Nakamura, I., Sato, Y., Takeda, K., Terada, M.

    Chemistry - A European Journal　20　(33)　2014

    DOI： 10.1002/chem.201403637 　

    ISSN： 1521-3765 0947-6539

  30. Structure-property relationships in thermally-annealed multi-walled carbon nanotubes Peer-reviewed

    Go Yamamoto, Keiichi Shirasu, Yo Nozaka, Yoshinori Sato, Toshiyuki Takagi, Toshiyuki Hashida

    CARBON　66　219-226　2014/01

    DOI： 10.1016/j.carbon.2013.08.061 　

    ISSN： 0008-6223

    eISSN： 1873-3891

  31. Long-term biopersistence of tangled oxidized carbon nanotubes inside and outside macrophages in rat subcutaneous tissue Peer-reviewed

    Yoshinori Sato, Atsuro Yokoyama, Yoshinobu Nodasaka, Takao Kohgo, Kenichi Motomiya, Hiroaki Matsumoto, Eiko Nakazawa, Tomoko Numata, Minfang Zhang, Masako Yudasaka, Hideyuki Hara, Rikita Araki, Osamu Tsukamoto, Hiroaki Saito, Takeo Kamino, Fumio Watari, Kazuyuki Tohji

    Scientific Reports　3　2516　2013/08

    DOI： 10.1038/srep02516 　

    ISSN： 2045-2322

  32. Helicity-selective photoreaction of single-walled carbon nanotubes with organosulfur compounds in the presence of oxygen Peer-reviewed

    Yutaka Maeda, Junki Higo, Yuri Amagai, Jun Matsui, Kei Ohkubo, Yusuke Yoshigoe, Masahiro Hashimoto, Kazuhiro Eguchi, Michio Yamada, Tadashi Hasegawa, Yoshinori Sato, Jing Zhou, Jing Lu, Tokuji Miyashita, Shunichi Fukuzumi, Tatsuya Murakami, Kazuyuki Tohji, Shigeru Nagase, Takeshi Akasaka

    Journal of the American Chemical Society　135　(16)　6356-6362　2013/04/24

    DOI： 10.1021/ja402199n 　

    ISSN： 0002-7863 1520-5126

  33. Aryl iodides as strong inhibitors in gold and gold-based bimetallic quasi-homogeneous catalysis Peer-reviewed

    Raghu Nath Dhital, Choavarit Kamonsatikul, Ekasith Somsook, Yoshinori Sato, Hidehiro Sakurai

    CHEMICAL COMMUNICATIONS　49　(25)　2542-2544　2013

    DOI： 10.1039/c3cc39019e 　

    ISSN： 1359-7345

    eISSN： 1364-548X

  34. Nitrogen physisorption and site blocking on single-walled carbon nanotubes Peer-reviewed

    S. -K. Lee, S. Iwata, S. Ogura, Y. Sato, K. Tohji, K. Fukutani

    SURFACE SCIENCE　606　(3-4)　293-296　2012/02

    DOI： 10.1016/j.susc.2011.10.009 　

    ISSN： 0039-6028

  35. Synthesis of azepine derivatives by rhodium-catalyzed tandem 2,3-rearrangement/heterocyclization

    Nakamura, I., Okamoto, M., Sato, Y., Terada, M.

    Angewandte Chemie - International Edition　51　(43)　2012

    DOI： 10.1002/anie.201205285 　

    ISSN： 1433-7851 1521-3773

  36. Influence of the structure of the nanotube on the mechanical properties of binder-free multi-walled carbon nanotube solids Peer-reviewed

    Yoshinori Sato, Hikaru Nishizaka, Shunichi Sawano, Atsushi Yoshinaka, Kazutaka Hirano, Shinji Hashiguchi, Takayuki Arie, Seiji Akita, Go Yamamoto, Toshiyuki Hashida, Hisamichi Kimura, Kenichi Motomiya, Kazuyuki Tohji

    Carbon　50　(1)　34-39　2012/01

    DOI： 10.1016/j.carbon.2011.07.047 　

    ISSN： 0008-6223

  37. Chemical Speciation Analysis for Amorphous Boron and Precipitated Boron Carbide in Sintered Boron-Added Carbon Nanotubes Peer-reviewed

    Mikio Ishikuro, Yoshinori Sato, Kazuyuki Tohij, Kazuaki Wagatsuma

    BUNSEKI KAGAKU　60　(10)　807-811　2011/10

    ISSN： 0525-1931

  38. Influence of carbon structure of the anode on the production of graphite in single-walled carbon nanotube soot synthesized by arc discharge using a Fe-Ni-S catalyst Peer-reviewed

    Hikaru Nishizaka, Masaru Namura, Kenichi Motomiya, Yasumasa Ogawa, Yasuo Udagawa, Kazuyuki Tohji, Yoshinori Sato

    Carbon　49　(11)　3607-3614　2011/09

    DOI： 10.1016/j.carbon.2011.04.063 　

    ISSN： 0008-6223

  39. Boron-Assisted Transformation to Rod-Like Graphitic Carbons from Multi-Walled Carbon Nanotubes in Boron-Mixed Multi-Walled Carbon Nanotube Solids Peer-reviewed

    Yoshinori Sato, Hikaru Nishizaka, Kenichi Motomiya, Go Yamamoto, Akira Okubo, Hisamichi Kimura, Mikio Ishikuro, Kazuaki Wagatsuma, Toshiyuki Hashida, Kazuyuki Tohji

    ACS Applied Materials & Interfaces　3　(7)　2431-2439　2011/07

    DOI： 10.1021/am200335n 　

    ISSN： 1944-8244

  40. Toxicity evaluations of various carbon nanomaterials Peer-reviewed

    Motohiro Uo, Tsukasa Akasaka, Fumio Watari, Yoshinori Sato, Kazuyuki Tohji

    DENTAL MATERIALS JOURNAL　30　(3)　245-263　2011/05

    DOI： 10.4012/dmj.2010-039 　

    ISSN： 0287-4547

  41. Chemical speciation analysis for amorphous boron and precipitated boron carbide in sintered boron-added carbon nanotubes Peer-reviewed

    Mikio Ishikuro, Yoshinori Sato, Kazuyuki Tohji, Kazuaki Wagatsuma

    Bunseki Kagaku　60　(10)　807-811　2011

    DOI： 10.2116/bunsekikagaku.60.807 　

    ISSN： 0525-1931

  42. Internal distribution of micro-/nano-sized ceramics and metals particles in mice Peer-reviewed

    Shigeaki Abe, Ikuhiro Kida, Mitsue Esaki, Nobuki Iwadera, Mami Mutoh, Chika Koyama, Tsukasa Akasaka, Motohiro Uo, Yoshinori Kuboki, Manabu Morita, Yoshinori Sato, Koichi Haneda, Tetsu Yonezawa, Balachandran Jeyadevan, Kazuyuki Tohji, Fumio Watari

    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN　118　(1378)　525-529　2010/06

    DOI： 10.2109/jcersj2.118.525 　

    ISSN： 1882-0743

    eISSN： 1348-6535

  43. Small and Shaping the Future Energy Eco-house System Peer-reviewed

    Ryuzo Furukawa, Hideyuki Takahashi, Yoshinori Sato, Hiroshi Sasaki, Norifumi Isu, Masuo Ohtsuka, Kazuyuki Tohji

    2ND INTERNATIONAL SYMPOSIUM ON AQUA SCIENCE, WATER RESOURCE AND LOW CARBON ENERGY　1251　11-+　2010

    DOI： 10.1063/1.3456267 　

    ISSN： 0094-243X

  44. ナノ材料のリスク評価と安全性対策 Invited Peer-reviewed

    佐藤義倫, 田路和幸

    フロンティア出版　2010　2010

    More details Close

    ISBN978-4-902410-20-4

  45. リチウムイオン2次電池と低炭素社会 Invited Peer-reviewed

    古川柳蔵, 高橋英志, 佐藤義倫, 佐々木 浩, 田路和幸

    Electrochemistry　78　(1)　54-59　2010/01

    Publisher:

    DOI： 10.5796/electrochemistry.78.54 　

    ISSN： 1344-3542

  46. Electron-stimulated defect formation in single-walled carbon nanotubes studied by hydrogen thermal desorption spectroscopy Peer-reviewed

    Satoshi Arima, Sangkil Lee, Yutaka Mera, Shohei Ogura, Katsuyuki Fukutani, Yoshinori Sato, Kazuyuki Tohji, Koji Maeda

    APPLIED SURFACE SCIENCE　256　(4)　1196-1199　2009/11

    DOI： 10.1016/j.apsusc.2009.05.111 　

    ISSN： 0169-4332

    eISSN： 1873-5584

  47. Effect of carbon nanotubes on cellular functions in vitro Peer-reviewed

    Xiaoming Li, Hong Gao, Motohiro Uo, Yoshinori Sato, Tsukasa Akasaka, Qingling Feng, Fuzhai Cui, Xinhui Liu, Fumio Watari

    JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A　91A　(1)　132-139　2009/10

    DOI： 10.1002/jbm.a.32203 　

    ISSN： 1549-3296

    eISSN： 1552-4965

  48. 磁気温熱療法に適した磁性酸化鉄ナノ粒子の合成と特性評価 Peer-reviewed

    バラチャンドラン ジャヤデワン, 渥美 崇, 須藤 誠, 粕谷 亮, 佐藤義倫, 田路和幸

    Thermal Medicine　25　43-52　2009/08/04

    DOI： 10.3191/thermalmed.25.43 　

  49. Material nanosizing effect on living organisms: non-specific, biointeractive, physical size effects Invited Peer-reviewed

    Fumio Watari, Noriyuki Takashi, Atsuro Yokoyama, Motohiro Uo, Tsukasa Akasaka, Yoshinori Sato, Shigeaki Abe, Yasunori Totsuka, Kazuyuki Tohji

    JOURNAL OF THE ROYAL SOCIETY INTERFACE　6　S371-S388　2009/06

    DOI： 10.1098/rsif.2008.0488.focus 　

    ISSN： 1742-5689

    eISSN： 1742-5662

  50. Preparation and characterization of lanthanum carbide encapsulated carbon nanocapsule/lanthanum hexaboride nanocomposites Peer-reviewed

    Masaru Namura, Ippei Waki, Yoshinori Sato, Go Yamamoto, Akira Okubo, Hisamichi Kimura, Naohisa Osaka, Kenichi Motomiya, Toshiyuki Hashida, Balachandran Jeyadevan, Kazuyuki Tohji

    Materials Letters　63　(15)　1307-1310　2009/06

    DOI： 10.1016/j.matlet.2009.03.006 　

    ISSN： 0167-577X

  51. Maturation of osteoblast-like SaoS2 induced by carbon nanotubes Peer-reviewed

    Xiaoming Li, Hong Gao, Motohiro Uo, Yoshinori Sato, Tsukasa Akasaka, Shigeaki Abe, Qingling Feng, Fuzhai Cui, Fumio Watari

    BIOMEDICAL MATERIALS　4　(1)　015005(1)-015005(8)　2009/02

    DOI： 10.1088/1748-6041/4/1/015005 　

    ISSN： 1748-6041

    eISSN： 1748-605X

  52. カーボンナノチューブの精製・前処理と分散・可溶化技術 Invited Peer-reviewed

    佐藤義倫, 横山敦郎, 田路和幸

    技術情報協会　2009　2009

    More details Close

    ISBN978-4-86104-282-9

  53. Biodistribution imaging of magnetic particles in mice: X-ray scanning analytical microscopy and magnetic resonance imaging Peer-reviewed

    Shigeaki Abe, Ikuhiro Kida, Mitsue Esaki, Tsukasa Akasaka, Motohiro Uo, Toshiaki Hosono, Yoshinori Sato, Balachandran Jeyadevan, Yoshinori Kuboki, Manabu Morita, Kazuyuki Tohji, Fumio Watari

    BIO-MEDICAL MATERIALS AND ENGINEERING　19　(2-3)　213-220　2009

    DOI： 10.3233/BME-2009-0583 　

    ISSN： 0959-2989

    eISSN： 1878-3619

  54. Characterization of Silver Nanoparticle-decorated Single-walled Carbon Nanotube Films Peer-reviewed

    Masaru Namura, Yoshinori Sato, Naoki Sashida, Shin-ichi Ogino, Kenichi Motomiya, Balachandran Jeyadevan, Kazuyuki Tohji

    Fullerenes Nanotubes and Carbon Nanostructures　17　(6)　587-599　2009

    DOI： 10.1080/15363830903044021 　

    ISSN： 1536-383X

  55. Influence of Neutral Beam Irradiation to Electrical Characteristics in Carbon Nanotubes

    A. Wada, Y. Sato, M. Ishida, F. Nihey, K. Tohji, S. Samukawa

    Proceedings of 8th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Information　66-67　2008/12/20

  56. In vivo rat subcutaneous tissue response of binder-free multi-walled carbon nanotube blocks cross-linked by de-fluorination Peer-reviewed

    Yoshinori Sato, Atsuro Yokoyama, Takao Kasai, Shinji Hashiguchi, Makoto Ootsubo, Shin-ihi Ogino, Naoki Sashida, Masaru Namura, Kenichi Motomiy, Balachandran Jeyadevan, Kazuyuki Tohji

    Carbon　46　(14)　1927-1934　2008/11

    DOI： 10.1016/j.carbon.2008.08.003 　

    ISSN： 0008-6223

    eISSN： 1873-3891

  57. Reinforcement of rubber using radial single-walled carbon nanotube soot and its shock dampening properties Peer-reviewed

    Yoshinori Sato, Kenji Hasegawa, Yoshinobu Nodasaka, Kenichi Motomiya, Masaru Namura, Nobuyuki Ito, Balachandran Jeyadevan, Kazuyuki Tohji

    Carbon　46　(11)　1509-1512　2008/09

    DOI： 10.1016/j.carbon.2008.06.019 　

    ISSN： 0008-6223

  58. ナノマテリアルの評価手法に関する研究の進展 組織反応と体内動態の可視化研究について

    亘理 文夫, 阿部 薫明, 宇尾 基弘, 江崎 光恵, 森田 学, 平田 恵理, 横山 敦郎, 赤坂 司, 韮澤 崇, 佐藤 義倫, 田路 和幸

    The Journal of Toxicological Sciences　33　(Suppl.)　S37-S37　2008/06

    Publisher: (一社)日本毒性学会

    ISSN： 0388-1350

    eISSN： 1880-3989

  59. Damage-free Surface Modification of Carbon Nanotubes using Advanced Neutral Beam

    Akira Wada, Yoshinori Sato, Masahiko Ishida, Fumiyuki Nihey, Kazuyuki Tohji, Seiji Samukawa

    The 6th EU-Japan Joint Symposium on Plasma Processing (EU-Japan JSPP) Book of Abstract　93-93　2008/04/22

  60. Composition controlled synthesis of fcc-FePt nanoparticles using a modified polyol process Peer-reviewed

    R. Justin Joseyphus, K. Shinoda, Y. Sato, K. Tohji, B. Jeyadevan

    JOURNAL OF MATERIALS SCIENCE　43　(7)　2402-2406　2008/04

    DOI： 10.1007/s10853-007-1951-9 　

    ISSN： 0022-2461

  61. Biochemical and Pathological Responses of Cells and Tissue to Micro- and Nanoparticles from Titanium and other Materials Peer-reviewed

    Fumio Watari, Kazuchika Tamura, Atsruro Yokoyama, Kenichiro Shibata, Tsukasa Akasaka, Bunshi Fugetsu, Kiyotaka Asakura, Motohiro Uo, Yasunori Totsuka, Yoshinori Sato, Kazuyuki Tohji

    Handbook of Biomineralization: Biological Aspects and Structure Formation　3　127-144　2008/03/20

    Publisher: Wiley-VCH Verlag GmbH & Co. KGaA

    DOI： 10.1002/9783527619443.ch53 　

  62. Cu-doped ZnS hollow particle with high activity for hydrogen generation from alkaline sulfide solution under visible light Peer-reviewed

    Takeo Arai, Shin-ichiro Senda, Yoshinori Sato, Hideyuki Takahashi, Kozo Shinoda, Balachandran Jeyadevan, Kazuyuki Tohji

    CHEMISTRY OF MATERIALS　20　(5)　1997-2000　2008/03

    DOI： 10.1021/cm071803p 　

    ISSN： 0897-4756

  63. Super-robust, lightweight, conducting carbon nanotube blocks cross-linked by de-fluorination Peer-reviewed

    Yoshinori Sato, Makoto Ootsubo, Go Yamamoto, Gregory Van Lier, Mauricio Terrones, Shinji Hashiguchi, Hisamichi Kimura, Akira Okubo, Kenichi Motomiya, Balachandran Jeyadevan, Toshiyuki Hashida, Kazuyuki Tohji

    ACS Nano　2　(2)　348-356　2008/02

    DOI： 10.1021/nn700324z 　

    ISSN： 1936-0851

  64. Determination of administered organic/inorganic particles in mice

    Shigeaki Abe, Chika Koyama, Mitsue Esaki, Ikuhiro Kida, Iosif Rosca, Tsukasa Akasaka, Motohiro Uo, Manabu Morita, Yoshinori Sato, Balachandran Jeyadevan, Yoshinori Kuboki, Kazuyuki Tohji, Fumio Watari

    8th World Biomaterials Congress 2008　1　460　2008

  65. Damage-free surface treatment of carbon nanotubes and self-assembled monolayer devices using a neutral beam process for fusing top-down and bottom-up processes Peer-reviewed

    Seiji Samukawa, Yasushi Ishikawa, Keiji Okumura, Yoshinori Sato, Kazuyuki Tohji, Takao Ishida

    JOURNAL OF PHYSICS D-APPLIED PHYSICS　41　(2)　024006　2008/01

    DOI： 10.1088/0022-3727/41/2/024006 　

    ISSN： 0022-3727

    eISSN： 1361-6463

  66. Novel method to evaluate the carbon network of single-walled carbon nanotubes by hydrogen physisorption Peer-reviewed

    Shinya Iwata, Yoshinori Sato, Kouta Nakai, Shohei Ogura, Tatsuo Okano, Masaru Namura, Atsuo Kasuya, Kazuyuki Tohji, Katsuyuki Fukutani

    The Journal of Physical Chemistry C　111　(41)　14937-14941　2007/10

    DOI： 10.1021/jp076275j 　

    ISSN： 1932-7447

  67. Concentrated colloids of silica-encapsulated gold nanoparticles: Colloidal stability, cytotoxicity, and X-ray absorption Peer-reviewed

    Yeon-Su Park, Atsuo Kasuya, Andriy Drnytruk, Noda Yasuto, Motohiro Takeda, Noriaki Ohuchi, Yoshinori Sato, Kazuyuki Tohji, Motohiro Uo, Furnio Watari

    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY　7　(8)　2690-2695　2007/08

    DOI： 10.1166/jnn.2007.601 　

    ISSN： 1533-4880

  68. Carbon Nanotubes Deposited on Titanium Implant for Osteoblast Attachment Peer-reviewed

    Naofumi Aoki, Atsuro Yokoyama, Yoshinobu Nodasaka, Tsukasa Akasaka, Motohiro Uo, Yoshinori Sato, Kazuyuki Tohji, Fumio Watari

    Journal of Bionanoscience　1　14-16　2007/06/01

    DOI： 10.1166/jbns.2007.003 　

  69. Polycarbosilane-derived SiC/single-walled carbon nanotube nanocomposites Peer-reviewed

    Go Yamamoto, Kenji Yokomizo, Mamoru Omori, Yoshinori Sato, Balachandran Jeyadevan, Kenichi Motomiya, Toshiyuki Hashida, Toru Takahashi, Akira Okubo, Kazuyuki Tohji

    NANOTECHNOLOGY　18　(14)　145614-145618　2007/04

    DOI： 10.1088/0957-4484/18/14/145614 　

    ISSN： 0957-4484

  70. Role of polyol in the synthesis of Fe particles Peer-reviewed

    R. Justin Joseyphus, D. Kodama, T. Matsumoto, Y. Sato, B. Jeyadevan, K. Tohji

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　2393-2395　2007/03

    DOI： 10.1016/j.jmmm.2006.10.1132 　

    ISSN： 0304-8853

  71. Synthesis of size-controlled Fe-Co alloy nanoparticles by modified polyol process Peer-reviewed

    D. Kodama, K. Shinoda, K. Sato, Y. Sato, B. Jeyadevan, K. Tohji

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　2396-2398　2007/03

    DOI： 10.1016/j.jmmm.2006.10.768 　

    ISSN： 0304-8853

  72. Heating efficiency of magnetite particles exposed to AC magnetic field Peer-reviewed

    Takashi Atsumi, Balachandran Jeyadevan, Yoshinori Sato, Kazuyuki Tohji

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　2841-2843　2007/03

    DOI： 10.1016/j.jmmm.2006.11.063 　

    ISSN： 0304-8853

  73. Mechanical Properties of Single-Walled Carbon Nanotube Solids Prepared by Spark Plasma Sintering Peer-reviewed

    Go Yamamoto, Yoshinori Sato, Toru Takahashi, Mamoru Omori, Kazuyuki Tohji, Toshiyuki Hashida

    Journal of Solid Mechanics and Materials Engineering　1　(7)　854-863　2007

    Publisher: The Japan Society of Mechanical Engineers

    DOI： 10.1299/jmmp.1.854 　

    ISSN： 1880-9871

    More details Close

    In this paper, a spark plasma sintering (SPS) method was employed to solidify single-walled carbon nanotubes (SWCNTs) only, and the effect of processing conditions on the mechanical properties of the SWCNT solids were examined using a small punch (SP) testing method. The sintering temperatures used was in the range of 600∼1400°C, and the sintering pressures used was 40 MPa and 120 MPa. It was demonstrated that the SPS method allowed SWCNTs to be solidified, without any additives. The experimental results showed that the purification of raw soot was critically importance. The SWCNT solids prepared from purified raw soot showed significant non-linear deformation response, producing quasi-ductile fracture behavior. In contrast, raw soot produced brittle solids. The Young's modulus, fracture strength and work of fracture increased with the increasing sintering temperature and pressure. The Raman and SEM analyses showed that the amount of the graphite-like materials were observed to increase with the increasing temperature and pressure, which indicate that the structure of the SWCNTs was changed partially into the graphite-like materials. The formation of graphite-like materials increased tendency of brittle fracture in the SWCNT solids. TEM observations revealed that the fracture surfaces of the SWCNT solids were characterized by pull out of SWCNT bundles. This observation suggests that it may be possible to improve the mechanical properties of SWCNT solids by increasing the cohesion between SWCNTs.

  74. Effect of morphology of CdS thin film on the photocatalytic decomposition of hydrogen sulfide

    A. Takahashi, T. Ishiyama, H. Takahashi, Y. Sato, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　898　119-+　2007

    DOI： 10.1063/1.2721260 　

    ISSN： 0094-243X

  75. Morphology control of FeCo alloy particles synthesized by polyol process

    D. Kodama, K. Shinoda, K. Sato, Y. Sato, K. Tohji, B. Jeyadevan

    WATER DYNAMICS　898　126-+　2007

    DOI： 10.1063/1.2721262 　

    ISSN： 0094-243X

  76. Evaluation of tribological properties of binder-free single-walled carbon nanotube solids for solid lubrication applications

    G. Yamamoto, T. Hashida, K. Adachi, Y. Sato, K. Tohji

    AIP Conference Proceedings　898　130-134　2007

    DOI： 10.1063/1.2721263 　

    ISSN： 0094-243X 1551-7616

  77. Magnetite nanoparticles for magnetic fluid hyperthermia using modified oxidation method

    T. Hosono, H. Takahashi, Y. Sato, K. Tohji, B. Jeyadevan

    WATER DYNAMICS　898　135-+　2007

    DOI： 10.1063/1.2721264 　

    ISSN： 0094-243X

  78. Efficient synthesis of gadolinium carbide encapsulating carbon nanocapsules

    I. Waki, Y. Sato, K. Motomiya, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　898　139-+　2007

    DOI： 10.1063/1.2721265 　

    ISSN： 0094-243X

  79. Characterization of Pt-based transition metal alloy electrodes for PEFC

    M. Uebayashi, Y. Sawada, Y. Sato, T. Itoh, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　898　162-+　2007

    DOI： 10.1063/1.2721271 　

    ISSN： 0094-243X

  80. Evaluation of multi-walled carbon nanotube scaffolds for osteoblast growth

    N. Tsuchiya, Y. Sato, N. Aoki, A. Yokoyama, F. Watari, K. Motomiya, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　898　166-+　2007

    DOI： 10.1063/1.2721272 　

    ISSN： 0094-243X

  81. Estimation of the number of cross-links of multi-walled carbon nanotube films formed by a dehydration condensation reaction

    S. Ogino, Y. Sato, G. Yamamoto, K. Sasamori, H. Kimura, T. Hashida, K. Motomiiya, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　898　175-+　2007

    DOI： 10.1063/1.2721274 　

    ISSN： 0094-243X

  82. Effect of crystalline structure of Cd(OH)(2) precursor on the photocatalytic activity of stratified CdS

    S. Yokoyama, H. Takahashi, Y. Sato, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　898　179-+　2007

    DOI： 10.1063/1.2721275 　

    ISSN： 0094-243X

  83. Preparation of size-controlled hat-stacked carbon nanofibers

    Y. Sato, A. Yokoyama, K. Motomiya, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　898　186-+　2007

    DOI： 10.1063/1.2721277 　

    ISSN： 0094-243X

  84. The purity and thermal stability in air of metal-encapsulating carbon nanocapsules (MECNCs) Peer-reviewed

    Motohiro Uo, Hanako Kachi, Tsukasa Akasaka, Fumio Watari, Yoshinori Sato, Kenichi Motomiya, Kazuyuki Tohji

    FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES　15　(4)　303-309　2007

    DOI： 10.1080/15363830701423773 　

    ISSN： 1536-383X

  85. Chemical synthesis of sub-micrometer- to nanometer-sized magnetic FeCo dice Peer-reviewed

    Daisuke Kodama, Kozo Shinoda, Kimitaka Sato, Yoshihiro Konno, Raphael J. Joseyphus, Kenichi Motomiya, Hideyuki Takahashi, Takatoshi Matsumoto, Yoshinori Sato, Kazuyuki Tohji, Balachandran Jeyadevan

    ADVANCED MATERIALS　18　(23)　3154-+　2006/12

    DOI： 10.1002/adma.200601292 　

    ISSN： 0935-9648

  86. Relation of the number of cross-links and mechanical properties of multi-walled carbon nanotube films formed by a dehydration condensation reaction Peer-reviewed

    Shin-ichi Ogino, Yoshinori Sato, Go Yamamoto, Kenichiro Sasamori, Hisamichi Kimura, Toshiyuki Hashida, Kenichi Motomiya, Balachandran Jeyadevan, Kazuyuki Tohji

    The Journal of Physical Chemistry B　110　(46)　23159-23163　2006/11

    DOI： 10.1021/jp0642387 　

    ISSN： 1520-6106

  87. Synthesis of Fe-Co alloy particles by modified polyol process Peer-reviewed

    D. Kodama, K. Shinoda, K. Sato, Y. Sato, B. Jeyadevan, K. Tohji

    IEEE TRANSACTIONS ON MAGNETICS　42　(10)　2796-2798　2006/10

    DOI： 10.1109/TMAG.2006.880072 　

    ISSN： 0018-9464

  88. Polyol process for Fe-based hard(fct-FePt) and soft(FeCo) magnetic nanoparticles Peer-reviewed

    B. Jeyadevan, K. Shinoda, R. J. Justin, T. Matsumot, K. Sato, H. Takahashi, Y. Sato, K. Tohji

    IEEE TRANSACTIONS ON MAGNETICS　42　(10)　3030-3035　2006/10

    DOI： 10.1109/TMAG.2006.880149 　

    ISSN： 0018-9464

  89. Influence of purity and morphology on tissue reactivity of carbon nanotubes Invited Peer-reviewed

    Kazuyuki Tohji, Yoshinori Sato

    Journal of Iapanese Society for Biomaterials　24　(5)　333-344　2006/09/01

  90. Preparation of single-walled carbon nanotube-organosilicon hybrids and their enhanced field emission properties Peer-reviewed

    Yutaka Maeda, Yoshinori Sato, Masahiro Kako, Takatsugu Wakahara, Takeshi Akasaka, Jing Lu, Shigeru Nagase, Yumiko Kobori, Tadashi Hasegawa, Kenichi Motomiya, Kazuyuki Tohji, Atsuo Kasuya, Dan Wang, Dapeng Yu, Zhengxiang Gao, Rus Han han, Hengqiang Ye

    CHEMISTRY OF MATERIALS　18　(18)　4205-4208　2006/09

    DOI： 10.1021/cm061100s 　

    ISSN： 0897-4756

    eISSN： 1520-5002

  91. Single-walled carbon nanotube-derived novel structural material Peer-reviewed

    G Yamamoto, Y Sato, T Takahashi, M Omori, T Hashida, A Okubo, K Tohji

    JOURNAL OF MATERIALS RESEARCH　21　(6)　1537-1542　2006/06

    DOI： 10.1557/JMR.2006.0186 　

    ISSN： 0884-2914

  92. Fundamental Studies of Hyperthermia Uing Magnetic Particles as Thermo-seeds 1: Development of Magnetic Particles Suitable for Hyperthermia Peer-reviewed

    T. Atsumi, B. Jeyadevan, Y. Sato, K. Tohji

    Journal of the Magnetics Society of Japan　30　555-560　2006/06/01

    DOI： 10.3379/jmsjmag.30.555 　

  93. Strikingly extended morphology of cells grown on carbon nanotubes Peer-reviewed

    Naofumi Aoki, Atsuro Yokoyama, Yoshinobu Nodasaka, Tsukasa Akasaka, Motohiro Uo, Yoshinori Sato, Kazuyuki Tohji, Fumio Watari

    Chemistry Letters　35　(5)　508-509　2006/05/05

    DOI： 10.1246/cl.2006.508 　

    ISSN： 0366-7022

  94. Apatite formation on carbon nanotubes Peer-reviewed

    T Akasaka, F Watari, Y Sato, K Tohji

    MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS　26　(4)　675-678　2006/05

    DOI： 10.1016/j.msec.2005.03.009 　

    ISSN： 0928-4931

  95. Effects of polycarbosilane addition on the mechanical properties of single-walled carbon nanotube solids Peer-reviewed

    Go Yamamoto, Mamoru Omori, Yoshinori Sato, Toru Takahashi, Kazuyuki Tohji, Toshiyuki Hashida

    JSME International Journal, Series A: Solid Mechanics and Material Engineering　48　(4)　189-193　2006/04/15

    DOI： 10.1299/jsmea.48.189 　

    ISSN： 1344-7912 1347-5363

  96. Determination of metallic elements in carbon nanotubes by inductively coupled plasma-optical emission spectrometry Peer-reviewed

    M Ishikuro, Y Sato, K Tohji, K Wagatsuma

    BUNSEKI KAGAKU　55　(2)　117-120　2006/02

    DOI： 10.2116/bunsekikagaku.55.117 　

    ISSN： 0525-1931

  97. Synthesis of FeCo alloy particles by modified polyol process and their structural and magnetic properties Peer-reviewed

    J. Balachandran, D. Kodama, K. Shinoda, K. Sato, Y. Sato, K. Tohji

    INTERMAG 2006 - IEEE International Magnetics Conference　908　2006

    DOI： 10.1109/INTMAG.2006.374939 　

  98. Control of an Arc Peripheral Reactive Plasma Growing Radial Single-Walled Carbon Nanotubes Peer-reviewed

    Y. Sato, G. Sato, K. Tohji, R. Hatakeyama

    Proceedings of the 6th International Conference on Reactive Plasmas and 23rd Symposium on Plasma Processing (ICRP-6/SPP-23)　533-534　2006/01

  99. Route to the synthesis of binder-free SWCNT solids with enhanced mechanical properties Peer-reviewed

    G. Yamamoto, Y. Sato, M. Omori, K. Yokomizo, T. Hashida, T. Takahashi, A. Okubo, S. Watanabe, K. Tohji

    FLOW DYNAMICS　832　425-+　2006

    DOI： 10.1063/1.2204535 　

    ISSN： 0094-243X

  100. 生体組織反応性に及ぼすカーボンナノチューブの純度と形態の影響 Invited Peer-reviewed

    田路和幸, 佐藤義倫

    バイオマテリアル　24　(5)　24-35　2006/01

  101. Mechanical properties of binder-free single-walled carbon nanotube solids Peer-reviewed

    G Yamamoto, Y Sato, T Takahashi, M Omori, A Okubo, K Tohji, T Hashida

    SCRIPTA MATERIALIA　54　(2)　299-303　2006/01

    DOI： 10.1016/j.scriptamat.2005.03.053 　

    ISSN： 1359-6462

  102. Synthesis of ZnxCd1-xS thin film by dip-coating method and its photocatalytic activity

    M. Hirayama, T. Arai, Y. Sato, K. Shinoda, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　833　15-+　2006

    DOI： 10.1063/1.2207063 　

    ISSN： 0094-243X

  103. Photocatalytic efficiency of CdS film synthesized by CBD method

    T. Ishiyama, T. Arai, Y. Sato, K. Shinoda, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　833　23-+　2006

    DOI： 10.1063/1.2207065 　

    ISSN： 0094-243X

  104. Influence of Cu on the photocatalytic activity of ZnS nanoparticles

    S. Senda, T. Arai, Y. Sato, K. Shinoda, B. Jeyadevan, K. Tohji

    WATER DYNAMICS　833　65-+　2006

    DOI： 10.1063/1.2207075 　

    ISSN： 0094-243X

  105. Synthesis and characterization of single-walled carbon nanotube/silicon carbide composites

    G. Yamamoto, K. Yokomizo, M. Omori, Y. Sato, T. Takahashi, T. Hashida, K. Motomiya, A. Okubo, S. Watanabe, K. Tohji

    WATER DYNAMICS　833　94-+　2006

    DOI： 10.1063/1.2207083 　

    ISSN： 0094-243X

  106. X-ray absorption fine structure (XAFS) analyses of Ni species trapped in graphene sheet of carbon nanofibers Peer-reviewed

    Mayuko Ushiro, Kanae Uno, Takashi Fujikawa, Yoshinori Sato, Kazuyuki Tohji, Fumio Watari, Wang-Jae Chun, Yuichiro Koike, Kiyotaka Asakura

    Physical Review B - Condensed Matter and Materials Physics　73　(14)　144103-1-144103-11　2006

    DOI： 10.1103/PhysRevB.73.144103 　

    ISSN： 1098-0121 1550-235X

  107. Cell Culture on a Carbon Nanotube Scaffold Peer-reviewed

    Naofurni Aoki, Atsuro Yokoyama, Yoshinobu Nodasaka, Tsukasa Akasaka, Motohiro Uo, Yoshinori Sato, Kazuyuki Tohji, Furnio Watari

    JOURNAL OF BIOMEDICAL NANOTECHNOLOGY　1　(4)　402-405　2005/12

    DOI： 10.1166/jbn.2005.048 　

    ISSN： 1550-7033

  108. Effect of cerium ions in an arc peripheral plasma on the growth of radial single-walled carbon nanotubes Peer-reviewed

    Y Sato, K Motomiya, B Jeyadevan, K Tohji, G Sato, H Ishida, T Hirata, R Hatakeyama

    Journal of Applied Physics　98　(9)　094313-1-094313-10　2005/11

    DOI： 10.1063/1.2128053 　

    ISSN： 0021-8979

  109. Evaluation of mechanical properties of single-walled carbon nanotube solids prepared by spark plasma sintering Peer-reviewed

    Go Yamamoto, Yoshinori Sato, Toru Takahashi, Mamoru Omori, Akira Okubo, Kazuyu Tohji, Toshiyuki Hashida

    Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　52　(11)　826-830　2005/11

    DOI： 10.2497/jjspm.52.826 　

    ISSN： 0532-8799

  110. Preparation of single- And multi-walled carbon nanotube solids and their mechanical properties Invited Peer-reviewed

    Go Yamamoto, Yoshinori Sato, Makoto Ohtsubo, Toru Takahashi, Mamoru Omori, Akira Okubo, Kazuyuki Tohji, Toshiyuki Hashida

    Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　52　(11)　831-835　2005/11

    DOI： 10.2497/jjspm.52.831 　

    ISSN： 0532-8799

  111. Preparation of single-walled carbon nanotube solids and their mechanical properties Peer-reviewed

    G Yamamoto, Y Sato, T Takahashi, M Omori, T Hashida, A Okubo, S Watanabe, K Tohji

    JOURNAL OF MATERIALS RESEARCH　20　(10)　2609-2612　2005/10

    DOI： 10.1557/JMR.2005.0345 　

    ISSN： 0884-2914

  112. Activation of Human Monocytes and Mouse Splenocytes by Single-Walled Carbon Nanotubes Peer-reviewed

    Kazuto Kiura, Yoshinori Sato, Motoaki Yasuda, Bunshi Fugetsu, Fumio Watari, Kazuyuki Tohji, Ken-ichiro Shibata

    JOURNAL OF BIOMEDICAL NANOTECHNOLOGY　1　(3)　359-364　2005/09

    DOI： 10.1166/jbn.2005.031 　

    ISSN： 1550-7033

    eISSN： 1550-7041

  113. Size separation of carbon nanotubes for biomedical application Peer-reviewed

    Kazuyuki Tohji, Yoshinori Sato, Atsuro Yokoyama, Ken-ichiro Shibata, Shin-ichi Ogino, Kazuchika Tamura, Tsukasa Akasaka, Motohiro Uo, Kenichi Motomiya, Balachandran Jeyadevan, Rikizo. Hatakeyama, Fumio Watari

    Proceedings of International Symposium on EcoTopia Science 2005　1　273-276　2005/08/08

  114. Water-soluble hat-stacked carbon nanofibers for biomedical applications Peer-reviewed

    Yoshinori Sato, Ken-ichiro Shibata, Fugetsu Bunshi, Atsuro Yokoyama, Shin-ichi Ogino, Kazuchika Tamura, Tsukasa Akasaka, Motohiro Uo, Kenichi Motomiya, Balachandran Jeyadevan, Rikizo. Hatakeyama, Fumio Watari, Kazuyuki Tohji

    Proceedings of International Symposium on EcoTopia Science 2005　1　277-280　2005/08/08

  115. The cytotoxicity of metal-encapsulating carbon nanocapsules Peer-reviewed

    M Uo, K Tamura, Y Sato, A Yokoyama, F Watari, Y Totsuka, K Tohji

    SMALL　1　(8-9)　816-819　2005/08

    DOI： 10.1002/smll.200400143 　

    ISSN： 1613-6810

  116. Strict preparation and evaluation of water-soluble hatstacked carbon nanofibers for biomedical application and their high biocompatibility: influence of nanofiber-surface functional groups on cytotoxicity Peer-reviewed

    Y Sato, K Shibata, H Kataoka, S Ogino, F Bunshi, A Yokoyama, K Tamura, T Akasaka, M Uo, K Motomiya, B Jeyadevan, R Hatakeyama, F Watari, K Tohji

    MOLECULAR BIOSYSTEMS　1　(2)　142-145　2005/07

    DOI： 10.1039/b501222h 　

    ISSN： 1742-206X

  117. Influence of length on cytotoxicity of multi-walled carbon nanotubes against human acute monocytic leukemia cell line THP-I in vitro and subcutaneous tissue of rats in vivo Peer-reviewed

    Y Sato, A Yokoyama, K Shibata, Y Akimoto, S Ogino, Y Nodasaka, T Kohgo, K Tamura, T Akasaka, M Uo, K Motomiya, B Jeyadevan, M Ishiguro, R Hatakeyama, F Watari, K Tohji

    MOLECULAR BIOSYSTEMS　1　(2)　176-182　2005/07

    DOI： 10.1039/b502429c 　

    ISSN： 1742-206X

    eISSN： 1742-2051

  118. Preparation and Mechanical Evaluation of Carbon Nanotube Solids Peer-reviewed

    Go Yamamoto, Makoto Otsubo, Yoshinori Sato, Toru Takahashi, Mamoru Omori, Kazuyuki Tohji, Toshiyuki Hashida

    Proceedings of the 16th Symposium on Functionally Graded Materials (FGM2004)　25-30　2005/03

  119. Mechanical Evaluation of Single-Walled Carbon Nanotube Solids by Three Point Bending Tests Peer-reviewed

    Go Yamamoto, Yoshinori Sato, Toru Takahashi, Mamoru Omori, Kazuyuki Tohji, Toshiyuki Hashida

    Proceedings of the 16th Symposium on Functionally Graded Materials (FGM2004)　31-36　2005/03

  120. X-ray absorption fine structure studies on the local structures of Ni impurities in a carbon nanotube Peer-reviewed

    K Asakura, WJ Chun, K Tohji, Y Sato, F Watari

    CHEMISTRY LETTERS　34　(3)　382-383　2005/03

    DOI： 10.1246/cl.2005.382 　

    ISSN： 0366-7022

    eISSN： 1348-0715

  121. Preparation of Carbon Nanotubes for Biomedical Applications: Size-Separation and their Biocompatibilities

    K. Tohji, Y. Akimoto, Y. Sato, B. Jeyadevan, K. Tamura, T. Akasaka, M. Uo, A. Yokoyama, K. –I. Shibata, F. Watari

    Fullerenes and Nanotubes –Materials for the New Chemical Frontier-Fullerenes (The Electrochemical Society, Inc.)　PV2004-12　178-183　2005/03/01

  122. Preparation and Biocompatibility of Sintered Carbon Nanotube Disk Invited

    M. Ohtsubo, Y. Sato, B. Jeyadevan, K. Tohji, R. Hatakeyama, G. Yamamoto, M. Ohmori, T. Hashida, K. Tamura, T. Akasaka, M. Uo, A. Yokoyama, F. Watari

    Fullerenes and Nanotubes –Materials for the New Chemical Frontier-Fullerenes (The Electrochemical Society, Inc.)　PV2004-12　243-248　2005/03/01

  123. Mechanical Properties of Single-Walled Carbon Nanotubes Solids Prepared by Spark Plasma Sintering Peer-reviewed

    Go Yamamoto, Yoshinori Sato, Toru Takahashi, Mamoru Omori, Kazuyuki Tohji, Toshiyuki Hashida

    Tranactions of the Japan Society of Mechanical Engineers　71　(702)　330-337　2005/02/01

    Publisher: The Japan Society of Mechanical Engineers

    DOI： 10.1299/kikaia.71.330 　

    ISSN： 0387-5008

    More details Close

    In this paper, a spark plasma sintering (SPS) method was employed to solidify single-walled carbon nanotubes (SWCNTs) only, and the effect of sintering conditions on the mechenical properties of the SWCNT solids were examined using a small punch (SP) testing method. The sintering temperature used in the range of 600-1 400°C, and the sintering pressure used 40 MPa and 120 MPa. It was demonstrated that the SPS method allowed SWCNTs to be solidified, without any additives. The experimental results showed that the purification of raw soot was critically importance. The SWCNT solid prepared from purified raw soot showed significant non-linear deformation response, producing quasi-ductile fracture behavior. In contrast, unpurified raw soot produced brittle SWCNT solids. The Young's modulus, fracture strength and work of fracture increased with increasing sintering temperature and pressure. The Raman scattering and SEM observations showed that the amount of the graphite-like materials were observed to increase with the increasing temperature and pressure, which indicate that the structure of the SWCNTs was changed partially into the graphite-like materials. The formation of graphite-like materials increased tendency of brittle fracture in the SWCNT solids. TEM observations revealed that the fracture surfaces of SWCNT solids were characterized by pull out of SWCNT bundles. This observation suggests that it may be possible to improve the mechanical properties of SWCNT solids by increasing the cohesion between SWCNTs.

  124. Preparation of Single-Walled Carbon Nanotube Solids and Their Mechanical Properties Peer-reviewed

    G. Yamamoto, Y. Sato, T. Takahashi, M. Omori, T. Hashida, A. Okubo, S. Watanabe, K. Tohji

    Extended Abstracts of International Symposium on ScoTopia Science 2005 (ISETS05), (Nagoya University, Japan, August 8-9, 2005)　265-268　2005

  125. Preparation of magnetic nanoparticles for magnetic fluid hyperthermia Peer-reviewed

    T. Atsumi, B. Jeyadevan, Y. Sato, K. Tamura, S. Aiba, K. Tohji

    INTMAG2005　2005/01

    DOI： 10.1109/INTMAG.2005.1464211 　

  126. Biological behavior of hat-stacked carbon nanofibers in the subcutaneous tissue in rats Peer-reviewed

    A Yokoyama, Y Sato, Y Nodasaka, S Yamamoto, T Kawasaki, M Shindoh, T Kohgo, T Akasaka, M Uo, F Watari, K Tohji

    NANO LETTERS　5　(1)　157-161　2005/01

    DOI： 10.1021/nl0484752 　

    ISSN： 1530-6984

  127. Caged multiwalled carbon nanotubes as the adsorbents for affinity-based elimination of ionic dyes Peer-reviewed

    B Fugetsu, S Satoh, T Shiba, T Mizutani, YB Lin, N Terui, Y Nodasaka, K Sasa, K Shimizu, R Akasaka, M Shindoh, KI Shibata, A Yokoyama, M Mori, K Tanaka, Y Sato, K Tohji, S Tanaka, N Nishi, F Watari

    ENVIRONMENTAL SCIENCE & TECHNOLOGY　38　(24)　6890-6896　2004/12

    DOI： 10.1021/es049554i 　

    ISSN： 0013-936X

  128. Synthesis and characterization of Mn-ZnO nanoparticles

    T. Hinotsu, Y. Sato, K. Shinoda, B. Jeyadevan, K. Tohji

    2nd International Workshop on WATER DYNAMICS　2　283-284　2004/11/11

  129. Influence of Cu on the photocatalytic activity of ZnS nanoparticles

    S. Senda, T. Arai, Y. Sato, K. Shinoda, B. Jeyadevan, K. Tohji

    2nd International Workshop on WATER DYNAMICS　2　285-288　2004/11/11

  130. Surface structure and activity of CdS thin film

    T. Ishiyama, T. Arai, Y. Sato, K. Shinoda, B. Jeyadevan, K. Tohji

    2nd International Workshop on WATER DYNAMICS　2　289-292　2004/11/11

  131. Application of multi-walled carbon nanotubes to CdS photocatalytic system

    Y. Sawada, T. Arai, Y. Sato, K. Shinoda, B. Jeyadevan, K. Tohji

    2nd International Workshop on WATER DYNAMICS　2　293-296　2004/11/11

  132. ＭＥＣＨＡＮＩＣＡＬ PROPERTIES AND MICROSTRUCTURAL INVASTIGATION OF SINGLE-WALLED CARBON NANOTUBE SOLIDS Peer-reviewed

    G. Yamamoto, Y. Sato, T. Takahashi, M. Omori, K. Tohji, T. Hashida

    2nd Int. Workshop on Water Dynamics　261-265　2004/11

  133. Large-scale production of Ba2+-alginate-coated vesicles of carbon nanofibers for DNA-interactive pollutant elimination Peer-reviewed

    B Fugetsu, S Satoh, T Shiba, T Mizutani, Y Nodasaka, K Yamazaki, K Shimizu, M Shindoh, K Shibata, N Nishi, Y Sato, K Tohji, F Watari

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN　77　(10)　1945-1950　2004/10

    DOI： 10.1246/bcsj.77.1945 　

    ISSN： 0009-2673

    eISSN： 1348-0634

  134. Development of carbon nanofibers for biomedical uses Peer-reviewed

    Yoshinori SATO, Yuki AKIMOTO, Makoto OHTSUBO, Rikizo HATAKEYAMA, Kazuyuki TOHJI

    Proceedings of the 15th Symposium on Functionally Graded Materials　15　34-39　2004/07

  135. Carbohydrate Coating of Carbon Nanotubes Peer-reviewed

    Tsukasa AKASAKA, Yoshinori SATO, Kazuyuki TOHJI, Fumio WATARI

    Proceedings of the 15th Symposium on Functionally Graded Materials　15　116-121　2004/07

  136. Effect of Impurities on Mechanical Properties of SWCNT Solids Prepared by Spark Plasma Sintering Peer-reviewed

    Go YAMAMOTO, Makoto OHTSUBO, Yoshinori SATO, Toru TAKAHASHI, Mamoru OHMORI, Kazuyuki TOHJI, Toshiyuki HASHIDA

    Proceedings of the 15th Symposium on Functionally Graded Materials　15　157-162　2004/07

  137. Mechanical Properties of Single-Walled Ccarbon Nanotube Solid Prepared by Spark Plasma Sintering Method

    G. Yamamoto, Y. Sato, T. Takahashi, M. Omori, K. Tohji, T. Hashida

    1st International Workshop on WATER DYNAMICS　1　33-36　2004/03/17

  138. ナノ・マイクロ微粒子の生体への影響 歯科診療で発生する微粒子の細胞への影響

    田村 一央, 高師 則行, ロスカ・イオシフ, 赤坂 司, 渥美 崇, 佐藤 義倫, 宇尾 基弘, 戸塚 靖則, 亘理 文夫

    歯科材料・器械　23　(2)　129-129　2004/03

    Publisher: (一社)日本歯科理工学会

    ISSN： 0286-5858

  139. Electronic properties of radial single-walled carbon nanotubes Peer-reviewed

    Sato, Y., Jeyadevan, B., Hatakeyama, R., Kasuya, A., Tohji, K.

    Chemical Physics Letters　385　(3-4)　232-328　2004/02

    DOI： 10.1016/j.cplett.2004.01.004 　

    ISSN： 0009-2614

  140. Size separation of carbon nanotubes for biomedical applications

    Y Sato, Y Akimoto, B Jeyadevan, K Motomiya, R Hatakeyama, K Tamura, T Akasaka, M Uo, A Yokoyama, K Shibata, F Watari, K Tohji

    NANOSENSING: MATERIALS AND DEVICES　5593　13-17　2004

    DOI： 10.1117/12.579714 　

    ISSN： 0277-786X

  141. Biocompatibility of carbon nanotube disk

    Y Sato, M Ohtsubo, B Jeyadevan, K Tohji, K Motomiya, R Hatakeyama, G Yamamoto, M Omori, T Hashida, K Tamura, T Akasaka, M Uo, A Yokoyama, F Watari

    NANOSENSING: MATERIALS AND DEVICES　5593　623-627　2004

    DOI： 10.1117/12.579687 　

    ISSN： 0277-786X

  142. Synthesis and size classification of metal oxide nanoparticles for biomedical applications

    T Atsumi, B Jeyadevan, Y Sato, K Tamura, S Aiba, K Tohji

    NANOSENSING: MATERIALS AND DEVICES　5593　628-636　2004

    DOI： 10.1117/12.579720 　

    ISSN： 0277-786X

  143. ストラティファイド素材と太陽光を利用した新しい水素製造システムの展望 Peer-reviewed

    荒井健男, 咲間修平, 佐藤義倫, 篠田弘造, バラチャンドラン・ジャヤデワン, 田路和幸

    資源と素材　119　(713)　713-720　2003/12

    Publisher: The Mining and Materials Processing Institute of Japan

    DOI： 10.2473/shigentosozai.119.713 　

    ISSN： 0916-1740

    More details Close

    Stratified materials are defined as materials with nano-sized stratification that have been artificially controlled and designed. They are exemplified as a thin layer or stacked layers formed on surface of semiconductors. The present research is aiming at formation of controlled and designed stratification on surface of fine particles, leading to improvement of properties of fine particles which has been difficult to accomplish through the conventional particles engineering, and to development of novel properties created by the stratification.<BR>Here, we describe the method of the development of the nano-size CdS catalyst with stratified structure that efficiently separates electron and hole during photolysis, especially, to produce hydrogen gas from hydrogen sulfide, H2S. Furthermore, as an approach for the development of the practical use photocatalyst, ZnS-carbon nanotube complex was also made and examined. In a way, the stratified structure is considered to enable the production of a reaction system which simulates function in biological cells. Using this catalyst in the solution mixed with various materials such as, calcium hydroxide, seawater and H2S, we succeeded in producing about 7.5l/h m2 of hydrogen gas under the sunlight.

  144. 微粒子と生体反応 Peer-reviewed

    亘理文夫, 田村一央, 高師則行, 宇尾基弘, 赤坂 司, 戸塚靖則, 古月文志, 佐藤義倫, 田路和幸

    ナノ学会会報　2　(1)　33-37　2003/12

    Publisher:

    ISSN： 1347-8028

  145. Characterization of radial single-walled carbon nanotubes

    Y. Sato, R. Hatakeyama, K. Tohji

    Proceedings of the 1st Student-organizing international mini-conference on information electronics system　1　68　2003/11/04

  146. A New Perspective for Hydrogen Generation System with Stratified Material and Solar Energy Peer-reviewed

    Takeo ARAI, Syuhei SAKIMA, Yoshinori SATO, Kozo SHINODA, Balachandran JEYADEVAN, Kazuyuki TOHJI

    Shigen-to-Sozai　119　(12)　713-720　2003/01

    DOI： 10.2473/shigentosozai 　

  147. Local Structure and Photocatalytic Property in ZnS Cluster Films Peer-reviewed

    K. Shinoda, H. Ohshima, Y. Sato, T. Ogawa, B. Jeyadevan, A. Kasuya, K. Tohji

    Proc. Int. Symp. on Cluster Assembled Mater. IPAP Conf. Series　3　71　2002/07

  148. Raman spectroscopy and field-emission properties of CVD-grown carbon-nanotube films Peer-reviewed

    M Sveningsson, RE Morjan, OA Nerushev, Y Sato, J Backstrom, EEB Campbell, F Rohmund

    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING　73　(4)　409-418　2001/10

    ISSN： 0947-8396

  149. Purification of MWNTs combining wet grinding, hydrothermal treatment, and oxidation Peer-reviewed

    Y Sato, T Ogawa, K Motomiya, K Shinoda, B Jeyadevan, K Tohji, A Kasuya, Y Nishina

    The Journal of Physical Chemistry B　105　(17)　3387-3392　2001/05

    DOI： 10.1021/jp002817k 　

    ISSN： 1089-5647

  150. SWNTs synthesized in external magnetic field Peer-reviewed

    B Jeyadevan, Y Sato, T Nakano, K Tohji, A Kasuya, R Hatekeyama, H Ishida, N Sato, K Ueno, T Takagi

    NANONETWORK MATERIALS: FULLERENES, NANOTUBES AND RELATED SYSTEMS　590　3-6　2001

    ISSN： 0094-243X

  151. Automation of purification for single-walled nanotubes Peer-reviewed

    T Ogawa, Y Sato, K Shinoda, B Jeyadevan, K Tohji, A Kasuya, Y Nishina

    NANONETWORK MATERIALS: FULLERENES, NANOTUBES AND RELATED SYSTEMS　590　47-50　2001

    ISSN： 0094-243X

  152. Estimation of the mechanical strength of nanotube bundle Peer-reviewed

    Y Nishina, T Maeda, A Kasuya, K Tohji, Y Sato

    NANONETWORK MATERIALS: FULLERENES, NANOTUBES AND RELATED SYSTEMS　590　161-164　2001

    ISSN： 0094-243X

  153. Purification method for SWNTs and its automation Peer-reviewed

    T Ogawa, Y Sato, K Shinoda, K Motomiya, B Jeyadevan, K Tohji, A Kasuya, Y Nishina

    PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON CLUSTER ASSEMBLED MATERIALS　3　97-100　2001

  154. Production and derivatisation of carbon nanotubes Peer-reviewed

    F Rohmund, A Gromov, RE Morjan, O Nerushev, Y Sato, M Sveningsson, EEB Campbell

    ELECTRONIC PROPERTIES OF MOLECULAR NANOSTRUCTURES　591　167-170　2001

    ISSN： 0094-243X

  155. The effect of strong and weak magnetic fields on the synthesis of SWNTs Peer-reviewed

    B Jeyadevan, Y Sato, K Tohji, K Motomiya, A Kasuya, R Hatakeyama, H Ishida, K Ueno, T Takagi

    PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON CLUSTER ASSEMBLED MATERIALS　3　93-96　2001

  156. PURIFICATION FOR MWNTS USING WET GRINDING, HYDROTHERMAL TREATMENT, AND OXIDATION

    Y. Sato, T. Ogawa, K. Motomiya, K. Shinoda, B. Jeyadevan, K. Tohji, A. Kasuya, Y. Nishina

    Chemistry and Physics of Fullerenes and Carbon Nanomaterials　PV2000-12　272-281　2000/10/01

Show all ︎Show first 5

Misc. 45

  1. 長期間によるラット軟組織内における酸素含有官能基修飾多層カーボンナノチューブの構造安定性

    佐藤義倫, 横山敦郎

    NEW DIAMOND　30　(3)　29-33　2014/07/25

    Publisher: オーム社

    ISSN： 1340-4792

  2. 東北大学大学院環境科学研究科「素材評価学」の紹介

    石田秀輝, 佐藤義倫

    JAIMA Season 2013 Autumn　134　44-45　2013/10/20

    Publisher: 一般社団法人 日本分析機器工業会

  3. カーボンナノチューブ固化体の高機能高強度特性

    佐藤義倫

    セラミックスデータブック2011　2011/12/15

    Publisher: 工業製品技術協会

  4. 23pPSB-32 Study of CO adsorption on single-walled carbon nanotubes

    Iwata S., Fukutani K., Sato Y., Tohji K.

    Meeting abstracts of the Physical Society of Japan　66　(2)　952-952　2011/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  5. 28aTH-9 Temperature dependence of CO adsorption on single-walled carbon nanotubes

    Iwata S., Fukutani K., Sato Y., Tohji K.

    Meeting abstracts of the Physical Society of Japan　66　(1)　945-945　2011/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  6. 24aPS-96 Study of CO physisorption on single-walled carbon nanotubes

    Iwata S., Fukutani K., Sato Y., Tohji K.

    Meeting abstracts of the Physical Society of Japan　65　(2)　861-861　2010/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  7. 親水性繊維状カーボンナノ材料の細胞毒性

    佐藤義倫, 田路和幸

    ナノ材料のリスク評価と安全性対策　135-143　2010/06

    Publisher: フロンティア出版

  8. 21pPSA-36 Study of molecular physisorption on single-walled carbon nanotubes by infrared spectroscopy and thermal desorption spectroscopy

    Iwata S., Fukutani K., Sato Y., Tohji K.

    Meeting abstracts of the Physical Society of Japan　65　(1)　951-951　2010/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  9. 21pPSA-43 Water adsorption and phase transiton on and in single-walled carbon nanotube

    Watanabe S., Iwata S., Yamakawa K., Sato Y., Toji K., Fukutani K.

    Meeting abstracts of the Physical Society of Japan　65　(1)　952-952　2010/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  10. 家庭内の直流化への期待と課題

    田路和幸, 古川柳蔵, 佐々木浩, 高橋英志, 佐藤義倫

    電気協会報　(1023)　14-20　2010/02/01

    Publisher: 社団法人日本電気協会

    ISSN： 1346-7441

  11. 26pPSB-49 Hydrogen physisorption on single-walled carbon nanotubes

    Iwata S., Ogura S., Fukutani K., Sato Y., Tohji K.

    Meeting abstracts of the Physical Society of Japan　64　(2)　830-830　2009/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  12. 磁気温熱療法に適した磁性酸化鉄ナノ粒子の合成と特性評価

    バラチャンドラン ジャヤデワン, 渥美 崇, 須藤 誠, 粕谷 亮, 佐藤 義倫, 田路 和幸

    日本ハイパーサーミア学会誌 = Japanese journal of hyperthermic oncology　25　(2)　63-63　2009/06/20

    ISSN： 0911-2529

  13. カーボンナノチューブの毒性評価

    佐藤義倫, 横山敦郎, 田路和幸

    化学工業　60　(6)　465-471　2009/06/01

    Publisher: 化学工業社

    ISSN： 0451-2014

  14. Carbon Nanotube-Bio Interface Invited Peer-reviewed

    Yoshinori SATO, Kazuyuki TOHJI, Masako YUDASAKA

    Hyomen Kagaku　30　(4)　202-206　2009/04

    Publisher: Surface Science Society Japan

    DOI： 10.1380/jsssj.30.202 　

    ISSN： 0388-5321

    eISSN： 1881-4743

  15. 29pPSB-13 Water adsorption on single-walled carbon nanotube

    Watanabe S., Iwata S., Yamakawa K., Sato Y., Sato K., Fukutani K.

    Meeting abstracts of the Physical Society of Japan　64　(1)　902-902　2009/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  16. 30pTE-5 Hydrogen physisorption on single-walled carbon nanotubes

    Iwata S., Ogura S., Lee S., Fukutani K., Sato Y., Tohji K.

    Meeting abstracts of the Physical Society of Japan　64　(1)　928-928　2009/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  17. カーボンナノチューブの長さ制御

    名村 優, 佐藤義倫, 田路和幸

    粉体技術　1　(1)　44-50　2009/01/01

    Publisher: 社団法人 日本粉体工業技術協会

    ISSN： 1883-3292

  18. 23aTA-7 Electron-stimulation-induced defects in single-walled carbon nanotubes sensitively detected by thermal hydrogen desorption

    Arima Satoshi, Lee Sangkil, Mera Yutaka, Fujiwara Takauki, Ogura Shouhei, Fukutani Katsuyuki, Sato Yoshinori, Tohji Kazuyuki, Maeda Koji

    Meeting abstracts of the Physical Society of Japan　63　(2)　783-783　2008/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  19. カーボンナノチューブの表面改質に関わる細胞毒性

    佐藤 義倫

    Material Stage　7　(12)　98-105　2008/03/10

    Publisher: 技術情報協会

    ISSN： 1346-3926

  20. Trend report on risk assessment of carbon nanotubes

    Yoshinori Sato

    応用物理　76　(10)　1154-1158　2007/10/10

    Publisher: 応用物理学会

    ISSN： 0369-8009

  21. X線ターゲット材料を目指した炭化ガドリニウム内包カーボンナノカプセル固化体の作製

    脇 一平, 佐藤 義倫, 本宮 憲一, ジャヤデワン B., 田路 和幸, 大久保 昭, 木村 久道

    春季大会講演集. I, 資源編　19　(2)　65-66　2007/03/29

    ISSN： 1343-9898

  22. 20pXB-14 Elucidation of the adsorption state of hydrogen on the carbon nanotube surfaces by Thermal Desorption Spectroscopy

    Iwata S., Ogura S., Fukutani K., Okano T., Sato Y., Tohji K.

    Meeting abstracts of the Physical Society of Japan　62　(1)　977-977　2007/02/28

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  23. ナノ粒子の有害性評価とリスク対策

    佐藤義倫, 田路和幸

    397-415　2007

    Publisher: 技術情報協会

  24. Handbook of Biomeneralization -Medical and Clinical Aspects

    Fumio Watari, Kazuchika Tamura, Atsuro Yokoyama, Ken-ichiro Shibata, Tsukasa Akasaka, Bunshi Fugetsu, Kiyotaka Asakura, Motohiro Uo, Yasunori Totsuka, Yoshinori Sato, Kazuyuki Tohji

    127-144　2007

    Publisher: Wiley-VCH

  25. Safeness of carbon nanotubes

    Yoshinori Sato, Atsuro Yokoyama, Ken-ichiro Shibata, Fumio Watari, Kazuyuki Tohji

    TANSO　225　(225)　364-372　2006/12/15

    Publisher: THE CARBON SOCIETY OF JAPAN

    DOI： 10.7209/tanso.2006.364 　

    ISSN： 0371-5345

    More details Close

    Carbon nanotubes (CNTs) have single- or multi-cylindrical graphene structures that possess diameters of a few nanometers, while the length can be up to a few micrometers. Single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) possess a high tensile strength and ultra-light weight, and have excellent chemical and thermal stability. They also possess semiconducting and metallic conductive properties. These anomalous features have led to many proposed applications in the biomedical field, including biosensors, drug and vaccine delivery. However, CNTs could have unusual toxicological properties, in that they share intermediate morphological characteristics of both fibers and nanoparticles. This review presents the cytotoxicity and biocompatibility of CNTs. Finally, we report the activation of the human acute monocytic leukemia cell line THP-1 in vitro and the response in subcutaneous tissue in vivo to MWCNTs of different lengths.

  26. 25pPSB-71 Elucidation of the adsorption state of hydrogen on the carbon nanotube surfaces

    Iwata S., Ogura S., Fukutani K., Okano T., Sato Y., Tohji K.

    Meeting abstracts of the Physical Society of Japan　61　(2)　764-764　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  27. GdC_2@CNCsの合成と精製

    脇 一平, 佐藤 義倫, バラチャンドラン ジャヤデワン, 田路 和幸

    春季大会講演集. I, 資源編　18　(2)　167-168　2006/03/27

    ISSN： 1343-9898

  28. ストラティファイドCdS光触媒活性におけるCd(OH)_2前駆体の影響

    横山 俊, 高橋 英志, 佐藤 義倫, バラチャランドラン ジャヤデワン, 田路 和幸

    春季大会講演集. I, 資源編　18　(2)　153-154　2006/03/27

    ISSN： 1343-9898

  29. ハイパーサーミアに適したマグネタイトナノ粒子の合成

    細野 隼章, 渥美 崇, 佐藤 義倫, バラチャンドラン ジャヤデワン, 田路 和幸

    春季大会講演集. I, 資源編　18　(2)　155-156　2006/03/27

    ISSN： 1343-9898

  30. 30aPS-77 Elucidation of the adsorption state of hydrogen on the carbon nanotube surfaces with thermal desorption spectroscopy

    Ogura S., Iwata S., Nakai K., Fukutani K., Sato Y., Tohji K.

    Meeting abstracts of the Physical Society of Japan　61　(1)　912-912　2006/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  31. カーボンナノチューブと金属内包カーボンナノカプセルの毒性評価

    佐藤義倫, 宇尾基弘, 横山敦郎, 柴田健一郎, 亘理文夫, 田路和幸

    表面　44　(3)　87-103　2006/03/01

    Publisher: 広信社

    ISSN： 0367-648X

  32. 21aPS-84 Hydrogen adsorption on the carbon nano-tube surfaces

    Nakai K., Ogura S., Matsumoto M., Okano T., Fukutani K., Sato Y., Toji K.

    Meeting abstracts of the Physical Society of Japan　60　(2)　774-774　2005/08/19

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  33. M(Mn, Al)-ZnO単結晶ナノ粒子の合成と物性

    樋之津 崇, 篠田 弘造, 佐藤 王高, 久野 誠一, 佐藤 義倫, バラチャンドラン ジャヤデワン, 田路 和幸

    春季大会講演集. I, 資源編　17　(2)　217-218　2005/03/28

    ISSN： 1343-9898

  34. 磁気記録媒体に適したFePtナノ粒子の合成

    浦川 潔, 篠田 弘造, 佐藤 義倫, バラチャンドラン ジャヤデワン, 田路 和幸, 佐藤 王高, 久野 誠一

    春季大会講演集. I, 資源編　17　(2)　219-220　2005/03/28

    ISSN： 1343-9898

  35. 水酸化物を前駆物質としたZn_xCd_<(1-x)>S微粒子の調製

    荒井 健男, 佐藤 義倫, 篠田 弘造, バラチャンドラン ジャヤデワン, 田路 和幸

    春季大会講演集. I, 資源編　17　(2)　221-222　2005/03/28

    ISSN： 1343-9898

  36. 炭素クラスター担持半導体光触媒の作製と可視光による水素発生

    篠田 弘造, 荒井 健男, 沢田 雄太郎, 佐藤 義倫, バラチャンドラン ジャヤデワン, 田路 和幸

    春季大会講演集. I, 資源編　17　(2)　215-216　2005/03/28

    ISSN： 1343-9898

  37. 糖鎖によるカーボンナノチューブの表面修飾

    赤坂司, 亘理文夫, 佐藤義倫, 田路和幸

    北海道外科雑誌　49　(1)　100-101　2004/06/20

    Publisher: 北海道外科学会

    ISSN： 0288-7509

  38. 216 Mechanical Properties of Single-Walled Carbon Nanotube Solids Prepared by Spark Plasm Sintering

    YAMAMOTO Go, SATO Yoshinori, TAKAHASHI Toru, OHMORI Mamoru, TOHJI Kazuyuki, HASHIDA Toshiyuki

    2004　(39)　76-77　2004/03/13

    Publisher: The Japan Society of Mechanical Engineers

  39. Tissue reaction to nanotube, nanoparticle, and microparticle, and their biological application. Preparation and evaluation of composite material using carbon nanotube.

    宇尾基弘, 赤坂司, 亘理文夫, 横山敦郎, 川崎貴夫, 田村一央, 佐藤義倫, 田路和幸, 大森守

    ナノチューブ、ナノ微粒子、マイクロ微粒子の組織反応性とバイオ応用 平成15年度 総括・分担研究報告書　2004

  40. Tissue reaction to nanotube, nanoparticle, and microparticle, and their biological application. Preparation and evaluation of composite material using carbon nanotube: biotoxicity of carbon nanocapsule.

    宇尾基弘, 赤坂司, 横山敦郎, 川崎貴夫, 田村一央, 戸塚靖則, 佐藤義倫, 田路和幸, 大森守

    ナノチューブ、ナノ微粒子、マイクロ微粒子の組織反応性とバイオ応用 平成15年度 総括・分担研究報告書　2004

  41. Tissue reaction to nanotube, nanoparticle, and microparticle, and their biological application. Application of carbon nanotube to biomaterial.

    横山敦郎, 山本悟, 赤坂司, 古月文志, 佐藤義倫, 田路和幸, 小野木伯薫, 橋田俊之, 大森守

    ナノチューブ、ナノ微粒子、マイクロ微粒子の組織反応性とバイオ応用 平成15年度 総括・分担研究報告書　2004

  42. The tissue reaction of nanotube, nanoparticle, and microparticle, and biological application. Functionalization of carbon nanotube.

    AKASAKA TSUKASA, YOKOYAMA ATSURO, TAMURA KAZUCHIKA, UO MOTOHIRO, WATARI FUMIO, SATO YOSHINORI, TOHJI KAZUYUKI

    ナノチューブ、ナノ微粒子、マイクロ微粒子の組織反応性とバイオ応用 平成15年度 総括・分担研究報告書　518-531　2004

  43. Tissue reaction to nanotube, nanoparticle, and microparticle, and their biological application. Functionalization of carbon nanotube and its biological application. Modification by carbohydrate compounds.

    AKASAKA TSUKASA, SASAKI KOKO, AOKI HISASHI, YOKOYAMA ATSURO, TAMURA KAZUCHIKA, UO MOTOHIRO, WATARI FUMIO, SATO YOSHINORI, TOHJI KAZUYUKI

    ナノチューブ、ナノ微粒子、マイクロ微粒子の組織反応性とバイオ応用 平成15年度 総括・分担研究報告書　628-638　2004

  44. Tissue reaction to nanotube, nanoparticle, and microparticle, and their biological application. Functionalization of carbon nanotube and its biological application. Plasticity of single-walled carbon nanotube.

    SASAKI KOKO, AOKI HISASHI, YOKOYAMA ATSURO, KAWASAKI TAKAO, AKASAKA TSUKASA, UO MOTOHIRO, WATARI FUMIO, SATO YOSHINORI, TOHJI KAZUYUKI

    ナノチューブ、ナノ微粒子、マイクロ微粒子の組織反応性とバイオ応用 平成15年度 総括・分担研究報告書　665-667　2004

  45. 水熱処理法を用いた多層ナノチューブの精製

    佐藤 義倫, 篠田 弘造, JEYADEVAN Balachandran, 田路 和幸, 粕谷 厚生, 仁科 雄一郎

    一般発表(研究・業績発表)講演要旨集　2000　(2)　122-123　2000/03/01

    ISSN： 0919-293X

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Books and Other Publications 8

  1. Handbook of Polymernanocomposites. Processing, Performance and Application Volume B: Carbon Nanotube Based Polymer Composites

    Yoshinori Sato, Mei Zhang, Kazuyuki Tohji

    Springer　2015/01/01

    ISBN: 9783642452291

  2. ナノ材料のリスク評価と安全性対策

    佐藤義倫, 田路和幸

    フロンティア出版　2010/06/01

    ISBN: 9784902410204

  3. カーボンナノチューブの毒性評価”、カーボンナノチューブの精製・前処理と分散・可溶化技術

    佐藤義倫, 横山敦郎, 田路和幸

    技術情報協会　2009/04/30

    ISBN: 9784861042829

  4. ナノ粒子の有害性評価とリスク対策

    佐藤義倫, 田路和幸

    技術情報協会　2007/10/31

  5. Handbook of Biomeneralization -Medical and Clinical Aspects-

    Fumio Watari, Kazuchika Tamura, Atsuro Yokoyama, Ken-ichiro Shibata, Tsukasa Akasaka, Bunshi Fugetsu, Kiyotaka Asakura, Motohiro Uo, Yasunori Totsuka, Yoshinori Sato, Kazuyuki Tohji

    WILEY-VCH, verlag, GmbH & Co.KGaA　2007/07/01

  6. The Latest Technology of a Function/Composition of Carbon Nanotube

    佐藤義倫

    シーエムシー出版　2006/05/31

  7. 宇宙太陽光発電システムの高度化に対する傾斜機能材料の適用性調査研究

    佐藤義倫

    2005/03/28

  8. Morphology Control of Materials and Nanoparticles -Advanced Materials Processing and Characterization-

    T. Arai, Y. Sato, K. Shinoda, B. Jeyadevan, K. Tohji

    Springer　2003/10

Show all Show first 5

Presentations 110

  1. Edge-Defect Introduced Single-Walled Carbon Nanotubes Synthesized by Fluorination-Defluorination Process and their Alkaline Oxygen Reduction Reaction Catalytic Activity

    Yoshinori Sato, Hiromu Morita, Yoshinori Sato, Kazutaka Hirano, Tetsuo Nishida

    247th Electrochemical Society　2025/05/21

  2. Functionalization of carbon nanomaterials via fluorination-defluorination process Invited

    Yoshinori Sato

    Research Meeting Institut Teknologi Bandung (ITB) – Tohoku University　2025/04/14

  3. Surface modification of carbon nanomaterials Invited

    Yoshinori Sato

    Curtin-Tohoku Joint Research Colloquium　2024/11/04

  4. Edge-deffect introduced single-walled carbon nanotubes synthesized by fluorination-defluorination process and their oxygen reduction reaction catalytic activity

    Hiromu Morita, Ryudai Tsukidate, Yoshinori Sato, Kazutaka Hirano, Tetsuo Nishida

    10th International Symposium on Carbon for Catalysis (CARBOCAT10)　2024/06/24

  5. Oxygen reduction reaction catalytic activity of nitrogen-doped single-walled carbon nanotubes prepared by a fluorination–defluorination process Invited

    Yoshinori Sato

    12th International Conference on Advanced Materials and Engineering Materials (ICAMEM2023)　2023/12/17

  6. Oxygen reduction reaction catalytic activity of edge-defect induced single-walled carbon nanotubes prepared by a fluorination–defluorination process

    Yoshinori Sato, Yoshinori Sato, Tstsuo Nishida

    12th International Conference on Colloids Conference　2023/06/12

  7. フッ素化－脱フッ素化を用いた炭素ナノ材料の表面改質とその機能 Invited

    佐藤 義倫

    日本無機薬品協会 第33回技術講演会　2021/03/17

  8. Synthesis of nitrogen-doped single-walled carbon nanotubes via defluorination and their electrochemical catalytic activity for oxygen reduction reaction International-presentation Invited

    Yoshinori Sato

    2019 Global Research Efforts on Energy and Nanomaterials (GREEN 2019)　2019/12/21

  9. 脱フッ素化による単層カーボンナノチューブへの窒素ドーピング

    佐藤 義倫

    第42回フッ素化学討論会　2019/11/21

  10. Synthesis of nitrogen-doped single-walled carbon nanotubes via defluorination and their electrochemical properties Invited

    Yoshinori Sato

    令和元年度 化学系学協会東北大会　2019/09/22

  11. 材料の機能で環境を守る: 炭素ナノ材料で電池を高性能化する Invited

    Yoshinori Sato

    2019/08/30

  12. Enhanced tensile strength of defluorinated multi-walled carbon nanotube fibers: Suppression of interfacial slip between nanotubes cross-linked via defluorination International-presentation

    Hikaru Nishizaka, Yoshinori Sato, Masashi Yamamoto, Tetsuo Nishida, Yoshinori Sato

    3rd International Conference on Applied Surface Science (ICASS 2019)　2019/06/18

  13. Preparation of Nitrogen-Doped Single-Walled Carbon Nanotubes via Defluorination International-presentation Invited

    Yoshinori Sato

    International Conference on Nano-Structured Materials & Devices (ICNSMD-2018)　2018/12/17

  14. Synthesis of nitrogen-doped single-walled carbon nanotubes via defluorination and their oxygen reduction reaction catalytic activity International-presentation Invited

    Yoshinori Sato

    Nano S&T-2018　2018/10/24

  15. Fabrication of all-carbon electric field type electron emission devices using metallic or semiconducting single-walled carbon nanotubes International-presentation

    Akihisa Kuroda, Norihiro Shimoi, Kazuyuki Tohji, Yoshinori Sato

    Carbon 2018　2018/07/01

  16. Cross-linking of carbon nanotubes assisted by defluorination: Enhanced tensile strength of multi-walled carbon nanotube fibers cross-linked by defluorination International-presentation

    5th Nano Today Conference　2017/12/06

  17. Nitrogen-doped single-walled carbon nanotubes prepared from fluorinated SWCNTs and their oxygen reduction reaction catalytic activity International-presentation

    ACS Publications Symposium: Innovation in Energy Conversion　2017/09/24

  18. Electrochemical Properties of Nitrogen-Doped Vertically Aligned Multi-Walled Carbon Nanotubes Synthesized by Defluorination International-presentation

    2017 E-MRS Fall Meeting　2017/09/18

  19. Defluorination-assisted nanotube-substitution reaction with ammonia gas for synthesis of nitrogen-doped single-walled carbon nanotubes International-presentation Invited

    16th World Nano Conference　2017/06/05

  20. Synthesis of nitrogen-doped single-walled carbon nanotubes by defluorination-assisted nanotube-substitution reaction with ammonia gas International-presentation Invited

    International Conference on Small Science 2017　2017/05/09

  21. Nitrogen-doped single-walled carbon nanotubes prepared from fluorinated SWCNTs International-presentation

    23rd Winter Fluorine Conference　2017/01/15

  22. In-Situ Electrochemical Raman Spectroscopy of Air-Oxidized Single-Walled Carbon Nanotube Bundles in Sulfuric Acid Solution International-presentation

    2016 MRS Fall Meeting & Exhibit　2016/11/27

  23. In-Situ Electrochemical Raman Spectroscopy of Air-Oxidized Single-Walled Carbon Nanotube Bundles in Aqueous Sulfuric Acid Solution International-presentation

    AEM2016　2016/09/12

  24. Photovoltaic Power of Single-Walled Carbon Nanotube Films by Interface Structures of Different Film Thickness International-presentation

    2016 MRS Spring Meeting & Exhibit　2016/03/31

  25. Production of Lightweight TiO2/MWCNT Solids Containing High Content of Carbon Nanotubes International-presentation

    The 19th International Conference on Surface Modification of Materials by Ion Beams (SMMIB-19)　2015/11/24

  26. フッ素化単層カーボンナノチューブの脱フッ素化による機能性材料の合成 Invited

    平成27年度 化学系学協会東北大会　2015/09/12

  27. Tensile Strength of Individual Carbon Nanotubes Constituting CNT Fibers International-presentation

    2015 MRS Spring Meetings　2015/04/06

  28. 長期におけるラット胸部軟組織に埋入された親水性多層カーボンナノチューブの構造評価

    第2回 ナノカーボンバイオシンポジウム　2015/02/20

  29. フッ素化カーボンナノチューブの脱フッ素化による機能材料開発 Invited

    北海道大学 電子科学研究所 講演会　2015/01/29

  30. Photo-thermoelectric power of single-walled carbon nanotube films International-presentation

    Materials Today Asia 2014　2014/12/09

  31. In vivo long-term structural stability of oxidized multi-walled carbon nanotubes inside and outside macrophages in rat subcutaneous tissue International-presentation

    Materials Today Asia 2014　2014/12/09

  32. Structural and electrochemical characterization of aminated single-walled carbon nanotubes prepared by fluorination International-presentation

    ECOSS 30: European Conference on Surface Science　2014/08/31

  33. Long-term structural stability of tangled oxidized multi-walled carbon nanotubes inside and outside macrophages in rat subcutaneous tissue International-presentation

    ECOSS 30: European Conference on Surface Science　2014/08/31

  34. フッ素化カーボンナノチューブを用いた機能材料開発 Invited

    日本材料学会ナノ材料部門委員会 2013年度 第2回講演会　2014/03/18

  35. In vivo long-term biopersistence of tangled oxidized multi-walled carbon nanotubes inside and outside macrophages in rat subcutaneous tissue International-presentation

    3rd Nano Today Conference　2013/12/08

  36. Properties of electric double layer capacitors using aminated single-walled carbon nanotube electrodes International-presentation

    2013 MRS Fall Meetings　2013/12/01

  37. 長期間によるラット軟組織内のマクロファージ内外に存在する酸素含有官能基修飾多層カーボンナノチューブの生体持続性

    公益社団法人日本セラミックス協会 第26回秋季シンポジウム　2013/09/04

  38. 長期間による胸部軟組織に埋入された多層カーボンナノチューブの構造評価 Invited

    ライフサイエンス分野シンポジウム“バイオマテリアルの新展開”　2013/01/29

  39. 長期間による胸部軟組織に埋入された親水性多層カーボンナノチューブの構造評価

    第39回 炭素材料学会年会　2012/11/28

  40. Structural deformation of functionalized multi-walled carbon nanotubes in the macrophage of rat subcutaneous soft tissue over long time

    第43回 フラーレン・ナノチューブ・グラフェン総合シンポジウム　2012/09/05

  41. Are functionalized multi-walled carbon nanotubes biodegraded within the living body? International-presentation

    NT12: 13th International Conference on the Science and Application of Nanotubes　2012/06/24

  42. New Carbon Materials: Fullerenes, Carbon Nanotubes, and Graphenes International-presentation

    8th International Workshop “WATER DYNAMICS”: “Water Pollution in Asia” and “Deep Carbon Cycle”　2011/03/08

  43. Properties of Multi-Walled Carbon Nanotube Blocks Solidified by De-fluorination International-presentation

    Frontier 2010: Third French Research Organizations Tohoku University, Joint Workshop on Frontier Materials and Processes　2010/12/07

  44. カーボンナノチューブ固化体の機械特性におけるホウ素添加の影響

    第39回フラーレン・ナノチューブ総合シンポジウム　2010/09/05

  45. Properties of electric double layer capacitor using high-crystallized single-walled carbon nanotubes synthesized by an arc discharge method International-presentation

    First International Conference on Materials for Energy　2010/07/04

  46. Influence of Boron Addition on Mechanical Properties of Carbon Nanotubes International-presentation

    NT10: 11th International Conference on the Science and Application of Nanotubes　2010/06/27

  47. グラフィン融合助剤を用いた高強度軽量カーボンワイヤーの創製

    第8回「ナノ製造技術の探索と展開」 さきがけ領域会議　2010/04/23

  48. 脱フッ素化により架橋された多層カーボンナノチューブブロック

    第19回日本MRS学術シンポジウム　2009/12/07

  49. Multi-Walled Carbon Nanotube Blocks Cross-Linked by De-fluorination International-presentation

    FRONTIER 2009　2009/11/29

  50. グラフィン融合助剤を用いた高強度軽量カーボンワイヤーの創製

    第7回「ナノ製造技術の探索と展開」 さきがけ領域会議　2009/10/16

  51. Single-Walled Carbon Nanotube Soot with Few Impurity Graphites by Arc Discharge Method International-presentation

    第216回アメリカ電気化学学会国際会議　2009/10/03

  52. Production and Characteriazation of Lanthanum Carbide Encapsulated Carbon Nanocapsule/Lanthanum Hexaboride Nanocomposites International-presentation

    第216回アメリカ電気化学学会国際会議　2009/10/03

  53. 高強度・高弾性を持つカーボンナノチューブ固化体の探索 Invited

    平成21年度 化学系学協会東北大会　2009/09/19

  54. アーク放電法によるグラファイト不純物の少ない単層カーボンナノチューブススの合成 International-presentation

    第37回フラーレン・ナノチューブ総合シンポジウム　2009/09/01

  55. Production of Single-Walled Carbon Nanotube Soot with Few Impurity Graphites by Arc Discharge International-presentation

    NT09: 10th International Conference on the Science and Application of Nanotubes　2009/06/21

  56. Osteoblast Growth on Multi-Walled Carbon Nanotubes with Different Diameter International-presentation

    CNBMT09 Satellite Symposium: 2nd Carbon Nanotube Biology, Medicine & Toxicology　2009/06/20

  57. Evaluation the carbon network of single-walled carbon nanotubes by a cryogenic thermal-desorption spectroscopy International-presentation

    CNTNE 2009　2009/06/09

  58. グラフィン融合助剤を用いた高強度軽量カーボンワイヤーの創製

    第6回「ナノ製造技術の探索と展開」 さきがけ領域会議　2009/04/20

  59. グラフィン融合助剤を用いた高強度軽量カーボンワイヤーの創製

    第5回「ナノ製造技術の探索と展開」 さきがけ領域会議　2008/10/31

  60. Binder-free Carbon Nanotube Blocks Cross-Linked by De-fluorination International-presentation

    The 10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials　2008/09/22

  61. in vivoによるラット軟組織に対する脱フッ素化法による多層カーボンナノチューブブロックの組織反応

    第35回フラーレン・ナノチューブ総合シンポジウム　2008/08/27

  62. Robust, Lightweight, Conducting Multi-Walled Carbon Nanotube Blocks Cross-Linked by De-fluorination International-presentation

    NT08: The 9th International Conference on the Science and Application of Nanotubes　2008/06/29

  63. Tissue response of multi-walled carbon nanotube blocks cross-linked by de-fluorination against subcutaneous tissue of rats in vivo International-presentation

    CNBMT08 Satellite Symposium: 1st Carbon Nanotube Biology, Medicine & Toxicology　2008/06/28

  64. Biocompatibility of binder-free multi-walled carbon nanotube blocks cross-linked by de-fluorination against subcutaneous tissue of rats in vivo International-presentation

    International Symposium on Nanotoxicology Assessment and Biomediacal, Environmental Application of Fine Particles and Nanotubes (ISNT2008)　2008/06/16

  65. Multi-walled carbon nanotube blocks cross-linked by de-fluorination International-presentation

    International Symposium on Nanotoxicology Assessment and Biomediacal, Environmental Application of Fine Particles and Nanotubes (ISNT2008)　2008/06/16

  66. Carbon Nanotube Blocks Cross-Linked by De-fluorination International-presentation

    ChemOnTubes 2008, International meeting on the chemistry of nanotubes: science and applications　2008/04/06

  67. Decoration of Silver Nanoparticles to Single-Walled Carbon Nanotubes International-presentation

    ChemOnTubes 2008, International meeting on the chemistry of nanotubes: science and applications　2008/04/06

  68. Solidification of Lanthanum Carbide-Encapsulating Carbon Nanocapsule/LaB6 composites International-presentation

    ChemOnTubes 2008, International meeting on the chemistry of nanotubes: science and applications　2008/04/06

  69. あなたの使っているカーボンナノチューブの完全性は大丈夫？

    日本金属学会 2008年春季大会　2008/03/26

  70. カーボンナノチューブは生体材料として利用できるか？ －毒性試験と細胞増殖－

    ネイチャーテクノロジー＆グリーンプロセスルネッサンス ”連携シンポジウム” 自然に学ぶ21世紀の環境調和型技術　2007/12/11

  71. 異なる直径を持つ多層カーボンナノチューブ上での骨芽細胞の細胞増殖因子

    第18回日本MRS学術シンポジウム　2007/12/07

  72. Preparation and Properties of Rubber Filled with Radial Single-walled Carbon Nanotubes International-presentation

    2007 MRS Fall Meeting　2007/11/26

  73. LaC2内包カーボンナノカプセル固化体の作製

    第4回 「ナノトキシコロジーアセスと微粒子・ナノチューブのバイオ応用」研究会　2007/08/01

  74. 放射状単層カーボンナノチューブを補強材としたゴムの調製と特性

    第33回フラーレン・ナノチューブ総合シンポジウム　2007/07/11

  75. Relation of the Number of Cross-links and Mechanical Prpperties of Multi-Walled Carbon Nanotube Films Formed by a Dehydration Condensation Reaction International-presentation

    2007 MRS Spring Meeting　2007/04/09

  76. 多層カーボンナノチューブスカフォールドにおける骨芽細胞増殖因子の探索

    厚生労働科学研究費補助金 化学物質リスク研究事業 「ナノ微粒子体内動態可視化法の開発」、第2回研究発表会　2007/03/01

  77. イメージング質量分析を用いた生体組織評価（2）

    厚生労働科学研究費補助金 化学物質リスク研究事業 「ナノ微粒子体内動態可視化法の開発」、第2回研究発表会　2007/03/01

  78. カーボンナノチューブの細胞毒性に関する純度と形態の影響

    第28回日本バイオマテリアル学会大会　2006/11/27

  79. Preparation of Size Controlled Hat-Stacked Carbon Nanofibers, and Their Cytotoxicity in Rat International-presentation

    4th International Workshop on WATER DYNAMICS　2006/11/07

  80. 異なる直径を持つ多層カーボンナノチューブスキャホールド上の骨芽細胞の増殖

    第31回フラーレン・ナノチューブ総合シンポジウム　2006/07/12

  81. Cell proliferation of osteoblasts on carbon nanotubes with different diameter International-presentation

    NT06: The 7th International Conference on the Science and Application of Nanotubes　2006/06/18

  82. イメージング質量分析を用いた生体組織評価（1）

    厚生労働科学研究費補助金 化学物質リスク研究事業 「ナノ微粒子体内動態可視化法の開発」、第1回研究発表会　2006/05/16

  83. Effect of Length on Cytotoxicity of Multi-Walled Carbon Nanotubes against Human Acute Monocytic Leukemia Cell Line THP-1 in Vitro and Subcutaneous Tissue of Rats International-presentation

    2005 MRS Fall Meeting　2005/11/28

  84. Size separation of carbon nanotubes for biomedical application International-presentation

    International Symposium on EcoTopia Science 2005 (ISETS05)　2005/08/08

  85. Water-soluble hat-stacked carbon nanofibers for biomedical applications International-presentation

    International Symposium on EcoTopia Science 2005 (ISETS05)　2005/08/08

  86. Effect of Length on Cytotoxicity of Multi-Walled Carbon Nanotubes against Human Acute Monocytic Leukemia Cell Line THP-1 in Vitro and Subcutaneous Tissue of Rats in Vivo

    第29回フラーレン・ナノチューブ総合シンポジウム　2005/07/25

  87. Influence of Length on Cytotoxicity of Multi-Walled Carbon Nanotubes against Human Acute Monocytic Leukemia Cell Line THP-1 in Vitro and Subcutaneous Tissue of Rats in Vivo International-presentation

    Yoshinori Sato, Atsuro Yokoyama, Ken-ichiro Shibata, Yuki Akimoto, Shin-ichi Ogino, Yoshinobu Nodasaka, Takao Kohgo, Kazuchika Tamura, Tsukasa Akasaka, Motohiro Uo, Kenichi Motomiya, Balachandran Jeyadevan, Mikio Ishiguro, Rikizo Hatakeyama, Fumio Watari, Kazuyuki Tohji

    NT05: The 6th International Conference on the Science and Application of Nanotubes　2005/06/26

  88. Water-soluble hat-stacked-type carbon nanofibers for biomedical applications

    Ken-ichiro Shibata, Atsuro Yokoyama, Tsukasa Akasaka, Motohiro Uo, Kenichi Motomiya, Balachandran Jeyadevan, Rikizo Hatakeyama, Fumio Watari, Kazuyuki Tohji

    ナノ学会第3回大会　2005/05/08

  89. 構造系材料の適応性検討 －CNTs系、膜材料系－

    田路和幸

    宇宙太陽発電システムの高度化に対する傾斜機能材料の適応性調査最終報告会　2005/02/21

  90. Water-Soluble Hat-Stacked-Type Carbon Nanofibers for Biomedical Applications International-presentation

    International Symposium of Tissue Response and Biomedical Application of Carbon Nanotubes, Nanofibers, and Nanoparticles　2004/12/20

    More details Close

    Abstract P7

  91. 構造系材料の適応性検討 －CNTs 系－

    田路和幸

    宇宙太陽発電システムの高度化に対する傾斜機能材料の適応性調査中間報告会　2004/12/03

  92. Biocompatibility of Carbon Nanotibes Disk International-presentation

    Optics East　2004/10/25

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    Meeting Abstracts No.5593-102

  93. Water-soluble hat-stacked-type carbon nanofibers for biomedical applications International-presentation

    第206回アメリカ電気化学学会国際会議　2004/10/03

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    Meeting Abstracts No.1649

  94. 水溶性カーボンナノチューブの分散とそのサイズ依存性

    厚生労働科学研究費補助金 萌芽的先端医療技術推進研究事業 ナノメディシン分野「ナノチューブ、ナノ微粒子、マイクロ微粒子の組織反応性とバイオ応用」 第5回研究発表会　2004/09/14

  95. アーク放電周辺プラズマ制御法による放射状単層ナノチューブの合成

    第65回応用物理学会学術講演会　2004/09/02

  96. 生体医学応用のためのHat-stacked-typeカーボンナノファイバーの水溶化

    第27回フラーレン・ナノチューブ総合シンポジウム　2004/07/28

  97. Preparation and Biocompatibility of Sintered Carbon Nanotibes Disk International-presentation

    第205回アメリカ電気化学学会国際会議　2004/05/09

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    Meeting Abstracts MA 2004-01, No.584

  98. カーボンナノファイバーのサイズ制御

    厚生労働科学研究費補助金 萌芽的先端医療技術推進研究事業 ナノメディシン分野「ナノチューブ、ナノ微粒子、マイクロ微粒子の組織反応性とバイオ応用」 第4回研究発表会　2004/02/19

  99. 補助プラズマを用いたアーク放電法による放射状単層ナノチューブの合成

    第26回フラーレン・ナノチューブ総合シンポジウム　2004/01/07

  100. バイオ用カーボンナノファイバーの開発

    第15回傾斜機能材料国内シンポジウム　2003/11/20

  101. Characterization of radial single-walled carbon nanotubes International-presentation

    The 1st Student-organizing international mini-conference on information electronics system　2003/11/04

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    Proceedings, P68

  102. 希土類金属を触媒とした放射状単層ナノチューブの高効率合成とその特性

    第25回フラーレン・ナノチューブ総合シンポジウム　2003/07/23

  103. アーク放電法によるCeを触媒とした放射状単層ナノチューブの高効率合成とその特性

    ナノ学会創立大会　2003/05/29

  104. 使用済みビデオテープや乾電池を用いたナノ炭素材料の合成

    資源・素材学会 東北支部平成13年度秋季大会　2001/11/13

  105. ウニ型SWCNTsの電界電子放出特性

    第23回フラーレン・ナノチューブ総合シンポジウム　2000/07/17

  106. Purification of MWNTs Using HIDE method International-presentation

    第197回アメリカ電気化学学会国際会議　2000/05/14

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    Meeting Abstracts No.719, Volume 2000-1

  107. 水熱処理を用いた多層ナノチューブの精製

    資源・素材2000 春季大会　2000/03/29

  108. バイオテクノロジーを利用した親水化フラーレンの調製

    資源・素材学会、東北支部平成11年度秋季大会　1999/11/16

  109. 水熱処理を用いた多層ナノチューブの精製

    文部科学省科学研究費 特定領域研究会A　1999/10/21

  110. Production of Hydrophilic Fullerenes by using Bacteria Biodegradation International-presentation

    第196回アメリカ電気化学学会国際会議　1999/10/17

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    Meeting Abstracts No.1494, Volume 99-2

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Industrial Property Rights 12

  1. 炭素材料, その製造方法及び電子放出材料

    田路和幸, 佐藤義倫, 尾本洋次, 佐藤良憲, 石丸 慧, 松下浩典, 山本雅士, 西田哲郎

    特許7092306

    Property Type: Patent

  2. 炭素材料及びその製造方法

    田路和幸, 佐藤義倫, 横山幸司, 平野一孝, 佐藤良憲

    特許7092296

    Property Type: Patent

  3. 窒素含有炭素材料及びその製造方法

    佐藤 義倫, 田路 和幸, 横山 幸司, 平野 一孝, 佐藤 良憲

    特許6805402

    Property Type: Patent

  4. 炭素材料の分散液、及びその製造方法

    佐藤 義倫, 田路 和幸, 平野 一孝, 佐藤 良憲

    特許5946242

    Property Type: Patent

  5. カーボンナノチューブおよびその製造方法

    佐藤 義倫, 田路 和幸, 名村 優

    特許5647435

    Property Type: Patent

  6. 非水電解液二次電池用負極材料

    田路 和幸, 佐藤 義倫, 伊藤 隆, 松本 高利, 高橋 幸典, 沼田 達治, 坂内 裕, 笠原 竜一, 岸本 章, 伊藤 貴裕, 松本 博道, 小倉 慎一

    特許5382569

    Property Type: Patent

  7. カーボンナノチューブおよびその製造方法

    佐藤 義倫, 田路 和幸, 小倉 正平, 福谷 克之, 名村 優

    特許5330035

    Property Type: Patent

  8. カーボンナノチューブの評価方法

    佐藤 義倫, 田路 和幸, 小倉 正平, 福谷 克之, 名村 優

    特許5330034

    Property Type: Patent

  9. 導電性材料およびその製造方法

    佐藤 義倫, 田路 和幸, 名村 優

    特許5253943

    Property Type: Patent

  10. カーボンナノチューブの集合体及びその形成方法並びに生体適合性材料

    佐藤 義倫, 田路 和幸, 菊山 裕久, 脇 雅秀, 橋口 慎二, 田代 康貴

    特許5014786

    Property Type: Patent

  11. 有機ケイ素化合物とカーボンナノチューブの複合材及びその製造方法

    赤阪 健, 若原 孝次, 前田 優, 加固 昌寛, 田路 和幸, 佐藤 義倫

    特許4961561

    Property Type: Patent

  12. 炭素繊維複合材料、及びその製造方法

    宮本京介, 入澤 寿平, 佐藤義倫, 佐藤良憲, 西田哲郎, 長谷部 類, 村上一孝

    Property Type: Patent

Show all Show first 5

Research Projects 26

  1. 窒素ドープ炭素ナノ材料の欠陥サイトがもたらす高効率酸素還元反応触媒活性機構の解明

    佐藤 義倫

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(B)

    Institution: 東北大学

    2023/04 - 2027/03

  2. Development of thermoelectric conversion function associated with the development of zonal structure in submarine hydrothermal vents.

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Tohoku University

    2024/06/28 - 2026/03/31

  3. Exploration of p-type semiconductor chimneys at seafloor based on microstructural analysis and thermoelectric characterization

    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

    2022/06/30 - 2024/03/31

  4. Development of a method to evaluate the index of interlayer strength and the structural phase transition for multi-walled carbon nanotubes by Raman shear vibration

    Sato Yoshinori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Tohoku University

    2019/06/28 - 2022/03/31

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    To take advantage of the strength of multi-walled carbon nanotube (MWCNT) in composites, it is necessary to have strong interactions between the layers of nanotubes to transfer the load to all layers of nanotubes, not only the outermost nanotubes are loaded. However, there is no method for evaluating interlayer strength at all. In this study, the shear vibration modes related between the layers of nanotubes were detected in the low-frequency region using Raman scattering spectroscopy. The deformation of nanotube structure caused the disappearance of the Raman shear vibration mode of MWCNT and the appearance of the Raman shear vibration mode of graphite, indicating the nanotube structure transforms into graphite.

  5. Controlled nitrogen doping into carbon materials with different curvature by defluorination for highly efficient oxygen reduction reaction catalysts

    Sato Yoshinori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2018/04/01 - 2022/03/31

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    In both planar carbon skeletons (graphite) and curved carbon skeletons (carbon nanotubes), a high concentration of pyridinic nitrogen species (Pyri-N) was successfully introduced into the carbon skeleton by the fluorination-defluorination method. It was also found that heat treatment in inert gas causes Pyri-N to decompose and undergo structural transition to graphitic nitrogen species (Grap-N), which is stable structure, and the ratio of Grap-N increases in the carbon framework. The electronic state of carbon materials is highly dependent on the curvature of carbon framework, revealing that the increase in the electron density by doping Grap-N around nanosized edges is essential to enhance oxygen reduction reaction catalytic activity.

  6. Development of bioactive nanocarbon composite enabling spatial and temporal control of the metastatic bone cancer environment and biosafety assessments

    Saito Naoto

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Shinshu University

    2017/04/01 - 2022/03/31

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    We have demonstrated that composites of carbon nanohorns and bisphosphonate drugs could be phagocytosed into osteoclasts to significantly inhibit their bone resorptive function. In addition, carbon fiber and anticancer drug composites were observed to effectively reduce cancer cell number in both in vitro and in vivo studies. The carbon fiber also acted as osseous scaffolding and promoted bone tissue regeneration. Thus, when introducing carbon materials complexed to bioactive molecules into metastatic bone for interactions with osteoclasts, cancer cells, and osteoblasts, the metastatic bone environment can be controlled spatially as well as temporally by a series of responses, namely, bone destruction termination, cancer cell suppression, and bone repair promotion.

  7. Development of smart nano-biomaterials and investigation of possibility on their clinical application for dentistry

    Yokoyama Atsuro, Bianco Alberto, Takada Sari, Maeda Yukari, Kimura Sadahito

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Hokkaido University

    2016/04/01 - 2019/03/31

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    In this study, in order to provide the carbon nanomaterials (CNMs) for clinical application of the dentistry, we observe the biodegradability of carbon nanohorns (CNHs) and modify antibiotics (minocycline) and growth factors (bone morphogenetic proteins) to CNHs. The control of sustained release by LED irradiation of them and their effects were confirmed. Furthermore, we developed titanium with CNHs modified on the surface. We also observed in vivo kinetics of carbon nanotubes (CNTs) locally implanted in mice and suggested that CNTs remain at the site of implantation and do not accumulate in detectable quantities in other organs. These proof-of-concepts will promote future studies on the application of CNMs as smart Nano-Biomaterials which are multifunctionalized for the dentistry.

  8. Development of a Low-energy Flat Plane-emission Panel Device Employing Single-walled Carbon Nanotubes

    TOHJI Kazuyuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (S)

    Institution: Tohoku University

    2014/05/30 - 2019/03/31

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    In this research and development, we report a newer approach of power and energy efficiency with the use of a simple structure employing the highly crystalline single-walled carbon nanotube (SWCNT) produced by arc discharge method with high-temperature annealing. We successfully fabricated elements of a planar lighting device using a phosphor screen emitting visible light in a simple diode structure composed of the cathode containing the highly crystalline SWCNTs. The anode, on the other hand, was made with phosphor deliberately optimized by coverage of silicon oxides, and it will be assembled together with the cathode by the new stable assembling process resulting to stand-alone flat plane-emission panel. And the phosphors were attempted to control light emission convolution employing long time afterglow of phosphors. We succeeded in clarifying the efficacy and applicability underlying the electrical conductivity of SWCNT by controlling their crystallinity.

  9. Controlled surface modification of highly crystalline vertically aligned carbon nanotubes by defluorination and their electrochemical properties

    Sato Yoshinori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2015/04/01 - 2018/03/31

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    Nitrogen-doped vertically aligned multi-walled carbon nanotubes (Nx-VAMWCNTs) and defluorinated VAMWCNTs (deFx-VAMWCNTs) were prepared from fluorinated VAMWCNTs. N500-VAMWCNTs and deF500-VAMWCNTs were modified with doped nitrogen atoms and a small amount of fluorine groups without destroying the alignment structure of the nanotubes. The specific capacitance of the N500-VAMWCNT electrodes was 12.0 F/g at a scan rate of 100 mV/s, which is approximately 1.8 times the value obtained for the as-grown VAMWCNT electrodes. Based on the order of self-potential of each sample in three-electrode cell system, combined cells were assembled with the deF550- and N500-VAMWCNTs as positive and negative electrodes, respectively. As a result, the open circuit voltage of combined cells exhibited +0.16 V, and their cell voltage and energy density were larger than those of normal cells (N500-VAMWCNT electrodes) when each cell was provided with equivalent electric charges per unit mass of the electrode.

  10. In vitro bone generation trial using multi-walled carbon nanotube blocks

    TANAKA Manabu, SATO Yoshinori, HANIU Hisao, SAITO Naoto, AOKI Kaoru

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Shinshu University

    2014/04/01 - 2016/03/31

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    Multi-walled carbon nanotubes were formed in a shape suitable for bone regeneration (CNTp), and evaluated the possibility of applications in bone regeneration medicine. We couldn't produce bones in vitro but CNTp showed good cell proliferation, bone conduction, and excellent capacity to hold and release of the drug sustainably. It was suggested that CNTp can be applied to regenerative medicine using tissue engineering not only as a filler of the bone defect, but also as a scaffold material transplanted by culturing cells and as a carrier for controlled release of drugs.

  11. Fabrication of thermoelectromotive assisted near-infrared solar cells composed of carbon nanomaterials with pn junction interface

    Sato Yoshinori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2013/04/01 - 2016/03/31

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    Positive-type single-walled carbon nanotube (SWCNT) with carboxyl groups and negative-type SWCNT with doped nitrogen atoms were synthesized in this study. In an effort to fabricate efficient near-infrared solar cells with combination of thermoelectromotive force and photovoltaic effect, p-SWCNT/n-SWCNT thin film solar cells with pn junction were produced and their performance were investigated. The p-SWCNT/n-SWCNT thin film solar cells had no photovoltaic force. One of the reasons was considered to be due to no formation of pn junction.

  12. Development and evaluation on safety of Hybrid nano biomaterial for reconstruction for oral and maxillofacial region

    YOKOYAMA ATSURO, AKASAKA Tsukasa, SATO Yoshinori, YAMAMOTO Satoru, TAKITA Hiroko, YUDASAKA Masako, SAKAGUCHI Norihito, SHIBA Kiyotaka

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Hokkaido University

    2013/04/01 - 2016/03/31

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    Effects of CNHs on bone formation, surface modification of CNTs and CNHs on titanium and their characteristics on bone formation, and the distribution of CNHs to internal organs used for biomaterial locally were evaluated in this study. CNHs accelerated differentiation of bone marrow cells to osteoblasts by Oncostatin M. The surface modification with CNHs and CNTs increased osteogenesis on titanium. CNHs have not been distributed in other organs on the local delivery.

  13. Development of anode of high performance lithium ion capacitors using single-walled carbon nanotube thin films

    SATO Yoshinori, ITOH Takashi, ONEGAWA Satoshi, HATO Yukinori, MIYAGAWA Risa

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Young Scientists (A)

    Institution: Tohoku University

    2011/04/01 - 2014/03/31

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    We investigated the properties of lithium ion capacitors (LICs) using highly crystalline single-walled carbon nanotube (SWCNT) thin films with carboxyl groups as an anode. The decrease of the capacity of LICs was suppressed at a high rate, and also the decrease of the capacitance and the increase of the internal resistance were suppressed at overcharging voltages. If the capacitance of SWCNTs is large, we can fabricate a high performance LICs. In contrast, the properties of the LICs decrease at over-discharging voltages. In the future, we need to clarify phenomena caused in SWCNT electrodes in over-discharging. We synthesized ethylenediaminated SWCNTs (EDA-SWCNTs) from fluorinated SWCNTs and investigated the properties of electric double-layer supercapacitors (EDLSCs) with EDA-SWCNTs as electrodes. Free-standing EDA-SWCNT electrodes for EDLSCs are effective as electrodes and improve the properties of EDLSCs in comparison to binder-free COOH-SWCNT electrodes.

  14. Development of the environmental friendly hydrogen generation system by using sulfur compounds

    TOHJI Kazuyuki, TAKAHASHI Hideyuki, SATO Yoshinori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2011/04/01 - 2014/03/31

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    From the results of electrochemical analysis, it become clear that catalytic reaction between polysulfide ion and fullerenes and oxygen was progress at the water - organic solvents interface. As the results, polysulfide ion (by products of photo catalytic reactions) was successfully changed into elemental sulfur and/or fullerenes-sulfur compounds. Moreover, polysulfide ion can be changed into industrial materials, such as polysulfide rubber which has high resistance properties. Synthesized elemental sulfur can be changed into hydrogen sulfide, which is the origin of photo catalytic reaction. Thus, environmental friendly hydrogen generation system by using sulfur can be constructed.

  15. Search for thermoelectromotive force of thin/bulk interfacial structured film comprised of only single-walled carbon nanotubes

    SATO Yoshinori, TOHJI Kazuyuki, TAKAHASHI Hideyuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2011 - 2012

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    In this study, we prepared high crystalline single-walled carbon nanotube (SWCNT) thin film (transmittance 9.0 %)/bulk film (transmittance 2.3 %) interfacial structured film cells and investigated the photoelectromotive force. When a light (solar simulator AM1.5 with 100 mW/cm2) was irradiated toward the bulk film side (10×10 mm2) of the cells, the photoelectromotive force of 0.90 mV occurred. The Seebeck coefficient was estimated to be +66.4 μV/K, and the carrier of high crystalline SWCNT was a positive hole. Additionally, the interface of thin/bulk film was not Schottky junction but Ohmic since the I-V curve of the cells showed a liner shape. The photoelectromotive force in the SWCNT film/bulk interface cell is considered to be thermoelectromotive force derived from thermal gradient generated by photo-excitation electron converted into heat.

  16. Development of solar cell using single-walled carbon nanotube with perfect carbon network

    TOHJI Kazuyuki, TAKAHASHI Hideyuki, SATO Yoshinori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2011 - 2012

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    A high crystallinity single-walled carbon nanotube (SWCNT) film/Ag cell was fabricated. When the SWCNT/Ag interface of the cell was irradiated with a visible light (650 nm), photovoltaic electromotive force of 0.16mV occurred. After checking the current-voltage (I-V) characteristic of the cell at the time of the light irradiation, the slope of the curve showed the constant linear nature, and the interface of SWCNT/Ag was found to be ohmic junction. As a result of having measured the electromotive force outbreak properties for the on/off of light irradiation, the electromotive force showed relaxation time. We found that the photovoltaic electromotive force was derived from thermoelectromotive force by light absorption having changed for heat.

  17. Reconstruction of Jaw Bone with 3 dimension scaffold treated by functionalized carbon nano-material

    YOKOYAMA Atsuro, AKASAKA Tsukasa, YAMAMOTO Satoru, TAKITA Hiroko, SATO Yoshinori, YASUDA Motoaki, SHIBA Kiyotaka, YUDASAKA Masako

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Hokkaido University

    2010 - 2012

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    Functionalized carbon nanomaterials were developed by covalent bond of b-FGF to multiwalled carbon nanotubes and absorption of simvastatin to carbon nanohorns, and effects of them on bone formation were evaluated by animal experiments. Extensive bone formation was observed in the scaffolds with functionalized carbon nanomaterials in comparison with normal carbon nanomaterials. Also, biocompatibility carbon nanomaterials was observed by animal experiments for a long term.

  18. グラフィン融合助剤を用いた高強度軽量カーボンワイヤーの創製

    佐藤 義倫

    Offer Organization: 科学技術振興機構

    Category: 戦略的な研究開発の推進/戦略的創造研究推進事業/さきがけ

    2008 - 2011

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    本研究では、1本のカーボンナノチューブの持つ高強度機械特性を、バルク領域まで反映させた高強度軽量のカーボンワイヤー創製技術の確立を目指します。具体的には、アセンブリー技術によりカーボンナノチューブ繊維を作製し、この繊維にグラフィン面結合・融合助剤を添加し、回転かつ引張応力を負荷しながら熱処理することにより、個々のカーボンナノチューブ同士を融合させ、高強度軽量カーボンワイヤーを創製します。

  19. Production of hydroxyapatite/carbon nanotube composites with high strength and flexibility

    SATO Yoshinori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Tohoku University

    2009 - 2010

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    The hydroxyapatite (HA) was grown on the surface of an individual multi-walled carbon nanotube (MWCNT), and their MWCNTs decorated with HA were sintered at 1473 K under a pressure of 80 MPa in vacuum for 90 min using a spark plasma sintering system (SPS) to produce HA/MWCNT composites. HA was partially grown on the surface of amide-functionalized MWCNTs, and the three bending strength and young’s modulus of the HA/MWCNT composites were 120 MPa and 15 GPa, respectively. As the young's modulus of the resulting composites was lower than that of the free-standing HA compacts, MWCNT were found to give the composites flexibility and to work as reinforced filler.

  20. Oral Tissue Reconstruction with 3D Scaffolds and Surface Modification Using Carbon Nanotubes

    YOKOYAMA Atsuro, AKASAKA Tsukasa, SATO Yoshinori, YAMAMOTO Satoru, YASUDA Motoaki, HIGASHINO Fumihiro, SHINDO Masanobu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Hokkaido University

    2007 - 2009

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    In this study, we developed 3D collagen scaffolds coated with carbon nanotubes to reconstruct jaw bone. It was shown that initial adhesion and spreading of osteoblastic cells on 3D collagen scaffold was accelerated by CNTs coating, especially center part of scaffold. Also, it was suggested to apply CNTs for reconstruction of jaw bone, because excellent osteoconductivy was observed when 3D collagen scaffolds coated with CNTs were implanted in bone.

  21. Development of Binder-Free Carbon Nanotube Fibers Designed with High Strength and Electric Conductivity

    SATO Yoshinori, MAURICIO Terrones

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Young Scientists (A)

    Institution: Tohoku University

    2007 - 2008

  22. 多種機能を持つモニタリング材料を目指した希土類炭化物内包カーボンカプセルの開発

    佐藤 義倫, 田路 和幸, 横山 敦郎, 宇尾 基弘

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 萌芽研究

    Institution: 東北大学

    2007 - 2008

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    金属内包カーボンナノカプセル(Metal-Encapsulated Carbon Nanocapsules : MECNCs)は、金属を内包したカプセル状のグラフェンシートを幾重にも重ねた構造をしており、その大きさは100nm程度で、MRIの造影剤、CTの造影剤などの生体内でのモニタリング剤として可能性を秘めた材料である。本年度はGdC_2@CNCsを含むススから、燃焼酸化と沈降分離を行い、GdC_2@CNCsを精製し、MRI造影剤としての特性評価を行った。試料は2.0mLのネジロガラス容器に、所定の濃度(0.1〜10ppm)の寒天を調製し、MRIに投入して各濃度の試料の横断面の像(T1強調画像)と信号(RF波)の減衰時間を測定した。その結果、すべての濃度からのシグナルはコントロール(単なる寒天)と同程度であることから、GdC_2@CNCsはMRI造影剤として機能しないことがわかった。一方、発想の転換で、カプセルに内包している希土類金属が持つ特性X線を利用できないかと考えた。CTの造影剤のヨウ素はK吸収端のエネルギーである33.18keVより大きいエネルギーのX線に対して吸収係数が飛躍的に上昇する。従って、33.18keVより僅かに大きいエネルギーを持つランタンの特性X線を発生させるX線ターゲットを使用することができれば、ヨード造影剤の造影効果を引き出すことができる。そこで、X線ターゲット用のLaC_2@CNCs固化体を作製した。LaB_6をバインダーとして、LaC_2@CNCsと混合し、放電プラズマ放電法で焼結して固化体を作製した。通常、LaB_6だけで焼結すると割れてしまうが、50wt%のLaC_2@CNCが含まれるLaC_2@CNC/LaB_6は3点曲げ強度224 MPa、比体積抵抗3.12×10^<-4>Ωcmであり、比較として作製したグラファイトをベースにしたgraphite/LaB_6よりも値が大きかった。さらに、LaC_2@CNCsにはLaが含まれているため、単位面積当たりから発生するLaの特性X線量が多いことが明らかになり、LaC_2@CNC/LaB_6がX線ターゲット材料として有効であることを見出した。

  23. マトリックス無しのタンパク質質量測定可能なTOF-MS用導電性基板の開発

    佐藤 義倫

    Offer Organization: 科学技術振興機構

    Category: 産学が連携した研究開発成果の展開/研究成果展開事業/地域事業/地域イノベーション創出総合支援事業/シーズ発掘試験

    2007 - 2007

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    タンパク質はイオン化により熱分解を起こすため、親イオンの質量が測定できない。熱的に安定なイオン化しやすいマトリックス分子を仲立ちして電荷を目的のタンパク質に移動させて親イオンを測定するが、それぞれのタンパク質に合わせたマトリックスが必要になる。本試験では、平面配向した多層カーボンナノチューブの固化体基板を使用し、マトリックス無しでタンパク質質量を測定できる飛行時間型質量分析用導電性基板を開発する。

  24. ポリオールプロセスを用いた多目的用均一粒径ナノ粒子合成技術の確立

    B Jeyadevan, 角田 匡清, 篠田 弘造, 佐藤 義倫, 田路 和幸, 松本 高利

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(A)

    Institution: 東北大学

    2005 - 2007

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    本研究における具体的な研究開発要素は、ポリオールプロセスにおけるナノ粒子の化学合成プロセスの機構解明とそれに基づくナノ粒子の組成・構造の精密制御プロセスの確立し、様々な目的にあったナノ粒子の材料設計ならびに単分散ナノ粒子の製造を行うものである。その目的の達成を目指して次の項目について研究を行った。 1.ポリオールプロセスの反応機構解明-X線吸収微細構造測定および紫外可視光吸収分光法を用い、コバルト粒子生成系を対象として本プロセスの反応機構解明を試みた。 2.反応速度の促進-ポリオールプロセスの反応速度の促進あるいは制御が得られる精製物質の物性、たとえば粒子サイズ、結晶構造などの制御に必要不可欠である。したがって、反応速度に影響及ぼす因子であるポリオール類意、金属塩類、反応促進剤などの有効性について検討した。ポリオール類の還元力の評価において分子軌道法および電気化学手法を用いた評価し、有効性を実験的に確認した。また、金属塩類や反応促進剤についても実験的な検討を行った。 3.金属及び合金ナノ粒子の合成-ポリオールプロセスを用いた合成においてはじめて純粋なFe及びFeCoナノ粒子の合成に成功した。また、導電性ナノ粒子合成においても銀および銅ナノ粒子の合成やそれらの酸化安定性に優れた被覆膜形成技術の開発に成功した。 4.金属および合金応用技術開発-20nm以下のFeCo合金微粒子の合成に成功しそれら高周波特性を評価しFeCo微粒子はGHz帯での周波数応答を示し、電磁波吸収体用材料としてのポテンシャルを確認した。また、電極触媒としてのFePt微粒子の活性評価について-本プロセスにより作成したFePt微粒子の燃料電池用アノード触媒としの活性評価を行った結果、Ptと比較して高い耐CO被覆性が確認され、アノード触媒材料としての有用性が示された。

  25. NOVEL SOLAR ENERGY CONVERSION SYSTEM USING WATER AND SULFUR

    TOHJI Kazuyuki, BALACHANDRAN Jeyadevan, SHINODA Kozo, INOUE Chihiro, SATO Yoshinori, NAKAMURA Takashi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (S)

    Institution: TOHOKU UNIVERSITY

    2002 - 2006

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    This year, we concentrated our research on the following topics aiming the accomplishment of solar energy conversion system (SECS) 1.Development of highly efficient photocatalyst- This year, we succeeded in scaling up the photocatalyst synthesis process (developed last year) to obtain necessary quantity of CdS particles for efficient SECS. As a consequence, this year' s research was focused on the development of a photocatalytic cell that utilizes hydrogen sulfide (H_2S) dissolved in alkaline solution as raw material and separate the hydrogen evolved effectively. 2.Removal of by-products evolved during reaction- When H_2S is photosplit, besides hydrogen, sulfur clusters (SC), which hinders the reaction is also produced as a by-product. Thus, a physical separation process based on electron transfer characteristics was developed to recover SC without degrading the reactants in the system. In this process, fullerene (C_<60>), which stably disperses in highly alkaline conditions, was used as an electron donor. When fullerene was introduced into the yellow colored suspension dispersing SC, the suspension turned colorless instantaneously. Furthermore, sulfur (S) recovered by heat-treating sulfur-contained fullerene was used for the preparation of the raw material to produce H_2S. 3.Reproduction of hydrogen sulfide from recovered sulfur Though circulation of sulfur was attempted by treating the same with water under hydrothermal conditions until last year, reproduction of H_2S using sulfate reducing bacteria (SRB) was attempted this year. As a result, we succeeded in the production of biogas containing 15 % of H_2S, which is equivalent to methane fermentation. 4.Enrichment of hydrogen sulfide Since the H_2S produced by treating sulfur with SRB is associated with large quantities of methane and carbon dioxide, solid and liquid absorbents based enrichment technology was developed to obtain nearly 100 % H_2S. Solar energy conversion system was accomplished by carrying out the above researches.

  26. Basic research for the development of portable compact magnetic memory using high coercivity magnetic nanoparticle

    JEYADEVAN B, TOHJI Kazuyuki, SHINODA Kozo, SATO Yoshinori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: TOHOKU UNIVERSITY

    2003 - 2004

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    In this project, the synthesis of magnetic metal and alloy nanoparticles by using the chemical method called "polyol process" was investigated in detail. The reaction parameters such as type of polyol, synthesis temperature, metal ion concentration, reaction promoting agents, and nucleating agents were effectively utilized to control the reaction kinetics to obtain magnetic nanoparticles with required physical properties such as size and crystal structure. This paved the way for the synthesis of magnetic nanoparticles with varying magnetic properties. For example in the cases of transition metal nanoparticles such as cobalt and nickel, the synthesis of particles with diameters ranging from few micron to few tens of nanometer and varying crystal structures was realized. For example, the bulk cobalt is known to have fcc phase at temperatures as high as 421.5℃. However, the cobalt metal particles synthesized using the modified polyol process were found to posses fcc structure at micron size levels. When the reaction kinetics was enhanced, the particle size was reduced to submicron and even to few tens of nanometer. Along with size reduction, the crystal structure also changed from fcc at micron size range, coexistence of fcc and hcp in the submicron size range and to s and hcp cobalt at nanometer size range. On the other hand, we also succeeded in the synthesis of non-magnetic hcp-Ni nanoparticle of few tens of nanometer in diameter. In the case of the synthesis of magnetic alloy nanoparticles for magnetic recording, we have successfully demonstrated the direct synthesis of L1_0 FePt nanoparticles at low temperature of 553 K using "modified polyol method" without subsequent annealing, whose diameter is 5-10 nm and the intrinsic magnetocrystalline anisotropy field (H_k) is 31 kOe. This indicates that precise control of the reaction kinetics, especially low reduction rate through optimizing the polyol/Pt salt mole ratio and type of polyol are very important for directly synthesizing the L1_0 FePt nanoparticles. CoPt nanoparticles with high magnetocrystalline anisotropy and also particle sizes of 7 nm in diameter were prepared by using the modified polyol process. Furthermore, we also succeeded in selectively fixing FePt and CoPt nanoparticles on a silicon substrate by using APTS as the coupling layer, which prevents the grain growth even at higher annealing temperatures. Though the presence of the highly anisotropic phases was identified the potential of the particles were well below the anticipated values. Although the successful fabrication of recording media using magnetic particles for portable compact memory was not realized, considerable information and knowledge related to both the synthesis of nanoparticles and the fabrication of nanoparticle monolayer film was gathered. Thus, using this information as the base, we will work towards the development of high-density recording medium.

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Social Activities 21

  1. CREST 生命現象の解明と応用に資する新しい計測・分析基盤技術「カーボンナノチューブを用いた単一生体分子ダイナミクスの計測」第4回中山チーム全体ミーティング

    2008/06/02 - 2008/06/03

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    単層カーボンナノチューブの完全性評価法、および生体内でのカーボンナノチューブの構造安定性

  2. 平成27年度 化学系学協会東北大会

    2015/09/13 -

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    平成27年度 化学系学協会東北大会 電気化学セッションでの依頼講演

  3. 北海道大学 電子科学研究所 講演会

    2015/01/29 -

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    北海道大学電子科学研究所の講演会

  4. 日本材料学会ナノ材料部門委員会 2013年度 第2回講演会

    2014/03/18 -

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    「日本材料学会ナノ材料部門委員会 2013年度 第2回講演会」にて、招待講演を行った。

  5. ライフサイエンス分野シンポジウム バイオマテリアルの新展開： Center for Fostering Young and Innovation Researchers (CFYIR), Nagoya Institute of Technology

    2013/01/29 -

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    名古屋工業大学若手研究イノベータ養成センター テニュア・トラック助教である前田浩孝先生が主催するシンポジウムにおいて、「2年間による胸部軟組織に埋入された親水性多層カーボンナノチューブの構造評価」について講演を行った。

  6. 信州大学 大学院工学研究科 遠藤研究室セミナー

    2012/08/10 -

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    セミナータイトル： 長期間による胸部軟組織に埋入された親水性多層カーボンナノチューブの構造評価 概要： カーボンナノチューブはドラックデリバリーのキャリヤ、スキャホールド、カテーテル、人口骨などの生体材料として注目されている。同時に、カーボンナノチューブの生体的持続性（生体内での構造安定性）は生体応用において重要であり、近年幾つかのカーボンナノチューブの生分解が報告されている。本報告では、2年間による胸部軟組織に埋入された親水性多層カーボンナノチューブの構造評価を報告する。

  7. 第4回 NPO法人環境エネルギー技術研究所セミナー まるごと自然エネルギー Part 1“太陽光とエネルギー”－太陽電池、Liイオン電池、直流給電の最新動向を探る－

    2010/10/21 -

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    「新素材を用いた太陽電池」、「Liイオン電池」、「直流給電」などの研究開発の一線の研究者、技術者による最新の動向・問題点・解決策をまとめたセミナー。

  8. みやぎ県民大学 大学開放講座

    2009/07/03 -

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    「環境問題への材料・物質の役割」をテーマとし、現在の生活レベルを維持しながら資源保護や廃棄物問題の解決を果たすための物質・素材の役割を市民にやさしく説明する。本講座では「サイズの問題」を中心に、次世代の新素材といわれる「カーボンナノチューブ」が、アスベストのように毒性を示すのか、わかり易く講義を行う。

  9. カーボンナノチューブ 穴だらけ、応用阻む品質

    2007/10/29 -

  10. 欠陥ない単層CNT バルクで合成成功

    2007/10/25 -

  11. 関西ナノテクノロジー推進会議 第4回 カーボンナノ材料研究会

    2007/02/02 -

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    講師

  12. 平成18年度 第5回21世紀COEプログラム「流動ダイナミクス国際研究教育拠点」研究交流会

    2007/01/16 -

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    21世紀COEプログラム「流動ダイナミクス国際研究教育拠点」研究グループ研究発表

  13. 技術情報協会

    2006/11/24 -

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    招待講演

  14. 技術情報協会

    2006/08/21 -

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    招待講演

  15. 2006年度炭素学会2月セミナー

    2006/02/03 -

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    ナノカーボンの未来を探る ―用途開発の最先端と生体への影響評価―

  16. 「ナノトキシコロジーアセスと微粒子・ナノチューブのバイオ応用」研究会

    2005/12/14 -

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    標記研究会が2005年12月12日、仙台ワシントンホテルにて開催された。本研究会の狙いはナノテクノロジーのバイオ応用におけるアプリケーションとインプリケーション（implications、リスクなど、予期しない影響）を同じ場で議論することと、これまでにあまり機会がなかったナノチューブのバイオ応用に関する研究発表の場を持つことである。主宰者は北海道大学大学院歯学研究科の亘理文夫教授であり、彼を中心とする研究プロジェクト、厚生労働科学研究費補助金萌芽的先端医療技術推進事業「ナノチューブ、ナノ微粒子、マイクロ微粒子の組織反応性とバイオ応用」のメンバーなどが中心になって運営された。2件の特別講演を含めて合計23件の講演があり、約50名が参加した。 特別講演は松岡厚子氏（国立医薬品食品衛生研究所）らによるアスベストによる染色体異常、輿貴美子氏（（独）産業医学総合研究所）による難溶性の粒子・繊維の生体影響に関する研究であった。いず

  17. 平成17年度 第2回微粒子ナノテクノロジー分科会

    2005/12/09 -

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    招待講演

  18. 独立行政法人 産業技術総合研究所 ナノカーボン研究センター

    2005/09/22 -

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    招待講演

  19. （財）新世代研究所 平成17年度第1回ナノカーボン研究会

    2005/09/16 -

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    招待講演

  20. （財）癌研究会癌研究所 蛋白創製研究部

    2005/08/25 -

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    招待講演

  21. 東北大、多層カーボンナノチューブの長さによる細胞毒性の違いを評価

    2005/08/03 -

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Other 16

  1. グラフィン融合助剤を用いた高強度軽量カーボンワイヤーの創製

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    本研究では、１本のカーボンナノチューブの持つ高強度機械特性を、バルク領域まで反映させた高強度軽量のカーボンワイヤー創製技術の確立を目指します。具体的には、アセンブリー技術によりカーボンナノチューブ繊維を作製し、この繊維にグラフィン面結合・融合助剤を添加し、回転かつ引張応力を負荷しながら熱処理することにより、個々のカーボンナノチューブ同士を融合させ、高強度軽量カーボンワイヤーを創製します。

  2. 多層カーボンナノチューブ固化体の結合様式

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    カーボンナノチューブ(CNTs)の特性の一つは、その構造に由来する高い機械強度であり、先端構造材料として期待されているが、母材と混合して複合体として利用するしかなく、その場合CNTそのものの特性を十分引き出すことはできなかった。申請者らはフッ素で表面を修飾した多層カーボンナノチューブ(MWCNTs)を真空・高温・高圧下で放電プラズマ法によって焼結したのち脱フッ素によりダングリングボンドを形成させたところ、母材なしにMWCNTだけで固化し、それは商業用グラファイトの4倍以上の機械強度を持つことを見出した。しかしMWCNT同士の結合様式の詳細は不明であり、更に高性能の素材開発のため、その解明を目的としている。

  3. マトリックス無しのタンパク質質量測定可能なTOF-MS用導電性基板の開発

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    質量分析装置は測定を行なう際に、まず試料をイオン化しなければならない。100kDaを超えるタンパク質はイオン化する時のレーザー照射により、タンパク質が熱分解を起こすため、タンパク質質量が測定できない。そこで熱的に安定なイオン化しやすい分子（マトリックス）を仲立ちして電荷（電子やプロトン（H+））を試料に移動させ、目的のタンパク質の親イオンを測定するが、それぞれのタンパク質に合わせたマトリックスが必要になる。そこで、平面配向した多層カーボンナノチューブ（Multi-Walled Carbon Nanotubes: MWCNTs）のみの固化体基板を使用して、マトリックス無しでタンパク質の質量を測定できる飛行時間型質量分析（Time-of-Flight Mass Spectrometry: TOF-MS）用導電性基板を開発する。

  4. 生体内における金属ナノ粒子・カーボンナノチューブの細胞毒性に関する研究

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    本研究では、①「金属ナノ粒子」、「カーボンナノチューブ」を合成、高純度精製し、②様々なサイズに分離、③サイズ制御されたナノ材料の生体組織反応性を調べ、細胞生存率や細胞からのサイトカイン放出の検索など、生化学的手法により学際センターを活用したナノ材料の細胞毒性を調べることを目的とする。

  5. 産業技術総合研究所事業、Nano-Risk-Net-Panel

  6. バインダー無しのカーボンナノチューブの固化体の創製

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    高温・高圧下におけるカーボンナノチューブ同士の結合・融合をモンテカルロシミュレーションにより計算し、その値を元に実験を行い、高強度であるカーボンナノチューブ固化体を作製する。

  7. バイオイメージング材料に応用するための希土類炭化物を内容したカーボンナノカプセルの大量合成・高純度精製に関する研究

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    希土類内包ナノカプセルは直流アーク放電法により合成される。陰極にはグラファイト棒、陽極は炭素物質量に対する希土類金属の濃度を約0.2から5.1 at.%に調整したグラファイトコンポジット棒を使用し、Heガス100 Torrの雰囲気中で行われる。しかしながら、その収率は20 wt%と非常に低いことが問題である。 本研究では、①アーク放電法により、様々な「希土類内包ナノカプセル」をHe圧力を変化させることにより、大量合成し、②「燃焼酸化」と「沈降分離」を組み合わせて高純度精製することを目的としている。

  8. 生体内における金属ナノ粒子・カーボンナノチューブの細胞毒性に関する研究

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    本研究では、①「金属ナノ粒子」、「カーボンナノチューブ」を合成、高純度精製し、②様々なサイズに分離、③サイズ制御されたナノ材料の生体組織反応性を調べ、細胞生存率や細胞からのサイトカイン放出の検索など、生化学的手法により学際センターを活用したナノ材料の細胞毒性を調べることを目的とする。

  9. 中性粒子ビームによるカーボンナノチューブの表面改質に関する研究

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    中性粒子ビームによるカーボンナノチューブの表面改質に関する研究

  10. カーボンナノチューブ表面に対する水素ガス吸着特性に関する研究

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    カーボンナノチューブ表面に対する水素ガス吸着特性に関する研究

  11. メソポーラス・カーボン電極材料の開発： EDLC、LIB、FCへの応用

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    東北大学未来科学技術共同研究センター（NICHe）リエゾンの支援により、東北大学の保有する材料技術、分析評価技術、微細加工技術システム設計技術、シミュレーション技術など多岐にわたる基礎・基礎技術とNECトーキンの保有する材料評価技術、デバイス設計・評価技術量産化技術を相互に活用し、共通の研究目的を達成するため研究開発活動を共同で推進、次世代の新規機能材料および革新的デバイスの開発実用化を行う。

  12. カーボンナノチューブの組織反応とバイオ応用

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    カーボンナノチューブの細胞毒性とバイオ応用の研究

  13. 放射状単層カーボンナノチューブをフィラーに用いたエラストマー特性に関する研究

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    放射状単層カーボンナノチューブをフィラーに用いたゴムの特性に関する研究

  14. カーボンナノチューブ複合体の特性の研究

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    カーボンナノチューブ複合体の機械・電気特性の研究

  15. 熱CVD法によるカーボンナノチューブの合成、精製、電界電子放出特性に関する研究

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    Gothenburg University and Chalmers University of Technology, School of Physics and Engineering PhysicsのProf. E. E. B. Campbell先生の研究室に短期留学し、熱CVD法によるカーボンナノチューブの合成し、精製を行った。精製されたカーボンナノチューブに対して電界電子放出特性を調べた。

  16. Si 系化学修飾カーボンナノチューブの電界電子放出特性

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    Si 系の官能基を修飾したカーボンナノチューブの電界電子放出特性の研究

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