Details of the Researcher

PHOTO

Takao Tsukada
Section
New Industry Creation Hatchery Center
Job title
Specially Appointed Professor(Research)
Degree

  • 工学博士（東北大学）

Committee Memberships 8

  • 日本伝熱学会企画部　委員

    2009/04 - Present

  • 日本伝熱学会企画部　委員

    2009/04 - Present

  • 化学工学会熱工学部会　副部会長（2007, 2008), 部会長(2009～)

    2007/04 - Present

  • 日本結晶成長学会　評議員

    2007/04 - Present

  • 化学工学会熱工学部会　副部会長（2007, 2008), 部会長(2009～)

    2007/04 - Present

  • 日本結晶成長学会　評議員

    2007/04 - Present

  • 化学工学会論文誌編集委員会　委員，副編集委員長（2009～）

    2006/04 - Present

  • 化学工学会論文誌編集委員会　委員，副編集委員長（2009～）

    2006/04 - Present

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Professional Memberships 10

  • 日本鉄鋼協会

  • Japan Society for Bioscience, Biotechnology, and Agrochemistry

  • The Japan Society for Precision Engineering

  • The Japan Society of Microgravity Application

  • Japan Society of Thermophysical Properties

  • The Heat Transfer Society of Japan

  • The Japan Society of Applied Physics

  • The Japanese Association for Crystal Growth

  • The Japan Society of Mechanical Engineers

  • The Society of Chemical Engineering Japan

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Research Interests 3

  • Modeling

  • Materials Processing

  • Transport Phenomena

Research Areas 1

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Transfer phenomena and unit operations /

Awards 8

  1. 2019年度日本伝熱学会学術賞

    2020/05　日本伝熱学会　"溶融Cu基合金の伝熱・流動特性の解明及び相分離構造との相関に関する研究"

  2. 2018年度日本マイクログラビティ応用学会論文賞

    2018/10　"SiGe Crystal Growth by the Travelling Liquidus-Zone Method abroad the International Space Station"

  3. Outstanding Paper Award of 2018

    2018/09　Journal of Chemical Engineering of Japan　"Effect of Surface Modifier of Nanoparticles on Dewetting Behaviors of Polymer Nanocomposite Thin Films"

  4. Outstanding Paper Award of 2011

    2012/09　Journal of Chemical Engineering of Japan　"Relationship between Applied Static Magnetic Field Strength and Thermal Conductivity Values of Molten Materials Measured Using the EML Technique", J. Chem. Eng. Japan, 44, 321-327 (2011).

  5. 研究賞 實吉雅郎記念賞

    2012/03　公益社団法人化学工学会　"高温融体材料プロセスにおける熱輸送特性の精密解析と評価に関する研究"

  6. Outstanding Paper Award (Sensors and Sensing Systems)

    2011/05　Measurement Science and Technology

  7. 俵論文賞

    2011/03　（社）日本鉄鋼協会　“非接触レーザー周期加熱カロリメトリー法による溶融Feの熱物性計測法の開発”

  8. 化学工学協会賞論文賞

    1988/04　化学工学協会　CZ法によるシリコン単結晶成長に及ぼす輻射熱遮蔽体の影響

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Papers 171

  1. Superspreading Wetting of Nanofluid Droplet Laden with Highly Dispersed Nanoparticles

    Eita Shoji, Akira Hoshino, Tetsushi Biwa, Masaki Kubo, Takao Tsukada, Takaaki Tomai, Tadafumi Adschiri

    Langmuir　2024/12/02

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.langmuir.4c03347 　

    ISSN： 0743-7463

    eISSN： 1520-5827

  2. Molecular dynamics simulations for interfacial structure and affinity between carboxylic acid-modified Al2O3 and polymer melts

    Takamasa Saito, Masaki Kubo, Takao Tsukada, Eita Shoji, Gota Kikugawa, Donatas Surblys, Momoji Kubo

    The Journal of Chemical Physics　159　(16)　2023/10/27

    Publisher: AIP Publishing

    DOI： 10.1063/5.0169721 　

    ISSN： 0021-9606

    eISSN： 1089-7690

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    Controlling the dispersion state of nanoparticles in a polymer matrix is necessary to produce polymer nanocomposites. The surface modification of nanoparticles is used to enable their dispersion in polymers. Moreover, molecular dynamics (MD) simulations are useful for revealing the interfacial properties between nanoparticles and polymers to aid in the design of materials. In this study, the effect of surface coverage, modifier length, and polymer species on the interfacial structure and affinity between surface-modified Al2O3 and polymer melts were investigated using all-atom MD simulations. Hexanoic, decanoic, and tetradecanoic acids were used as surface modifiers, and polypropylene (PP), polystyrene (PS), and poly (methyl methacrylate) (PMMA) were used as polymers. The work of adhesion Wadh and the work of immersion Wimm were selected as quantitative measures of affinity. Wadh was calculated using the phantom-wall approach, and Wimm was calculated by simply subtracting the surface tension of polymers γL from Wadh. The results showed that Wadh and Wimm were improved by surface modification with low coverage, owing to a good penetration of the polymer. The effect of modifier length on Wadh and Wimm was small. Whereas Wadh increased in the following order: PP < PS < PMMA, Wimm increased as follows: PMMA < PS < PP. Finally, the trend of Wadh and Wimm was organized using the Flory–Huggins interaction parameter χ between the modifier and the polymer. This study demonstrates that the interfacial affinity can be improved by tuning the surface coverage and modifier species depending on the polymer matrix.

  3. Cooling rate of reactant solution in a flow-type supercritical hydrothermal reactor estimated using neutron radiography

    Ryosuke Sasaki, Kosei Sato, Bo Xie, Seiichi Takami, Masaki Kubo, Takao Tsukada, Katsumi Sugimoto, Naoya Odaira, Daisuke Ito, Yasushi Saito

    Journal of Physics: Conference Series　2605　(1)　012029-012029　2023/09/01

    Publisher: IOP Publishing

    DOI： 10.1088/1742-6596/2605/1/012029 　

    ISSN： 1742-6588

    eISSN： 1742-6596

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    Abstract Rapid cooling of reactants quenches the intermediate state of chemical reactions and enables the synthesis of novel materials that cannot be realized by thermodynamic equilibrium processes. In this study, we estimated the cooling rate of reactant solutions during the supercritical hydrothermal synthesis of metal oxide nanoparticles. Neutron radiography measurements were performed to visualize the profile of the average water density at a junction where a stream of heated water was mixed with another stream of cooling water. The cooling rate of the heated water that mimicked the reactant solution was estimated using the relationship between the density and temperature of water under constant pressure conditions. This result should provide vital information about the flow-type synthesis of novel metal oxide nanoparticles.

  4. Comparison of Phase Separation Structures between Undercooled Cu–Fe and Cu–Co Alloys Solidified Under a Static Magnetic Field

    Taiki Okuyama, Rikuto Suzuki, Masaki Kubo, Takao Tsukada, Eita Shoji, Hiroyuki Fukuyama

    Journal of Chemical Engineering of Japan　56　(1)　2023/05/17

    Publisher: Informa UK Limited

    DOI： 10.1080/00219592.2023.2211117 　

    ISSN： 0021-9592

    eISSN： 1881-1299

  5. Effects of the mixer shape in a flow-type supercritical hydrothermal reactor as evaluated by neutron radiography and CeO2 nanoparticle synthesis

    Kosei Sato, Ryosuke Sasaki, Bo Xie, Seiichi Takami, Masaki Kubo, Takao Tsukada, Katsumi Sugimoto, Naoya Odaira, Daisuke Ito, Yasushi Saito

    Reaction Chemistry & Engineering　2023

    DOI： 10.1039/D3RE00018D 　

  6. Effect of surface modifier and solvent on the affinity between the surface-modified solid and organic solvent: A molecular dynamics study

    Takamasa Saito, Ryo Takebayashi, Masaki Kubo, Takao Tsukada, Eita Shoji, Gota Kikugawa, Donatas Surblys

    AIP Advances　12　(10)　105206-105206　2022/10/01

    Publisher: AIP Publishing

    DOI： 10.1063/5.0119681 　

    eISSN： 2158-3226

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    To control the dispersibility of surface-modified nanoparticles in fluid, it is important to evaluate the affinity between surface-modified nanoparticles and solvents and elucidate the effect of surface modification on the affinity at the molecular level. In this study, the effect of the chain length of the surface modifier and solvent on the work of adhesion Wadh was investigated for the carboxylic acid-modified Al2O3/ n-alkane interface by molecular dynamics simulations using the phantom-wall method. Here, we adopted hexanoic acid, decanoic acid, and octadecanoic acid as the surface modifiers and n-hexane, n-decane, and n-dodecane as the solvents. At a surface coverage of 100%, the effect of the modifier length on Wadh was small because the solvent did not penetrate any modifier layers with a dense packing state. At a surface coverage of 50%, the solvent penetration was good except for the octadecanoic acid modifier, and Wadh for the decanoic acid modifier was higher than that for the hexanoic acid and octadecanoic acid modifiers. For the decanoic acid modifier with a surface coverage of 50%, the effect of the solvent length on Wadh was small because the density distributions of the modifier and solvent near the interface were almost the same in all solvent systems. Solvent penetration was evaluated using the overlap parameter, which is the degree of overlap of the density distribution. A large penetration resulted in high Wadh. We demonstrated that the affinity between surface-modified nanoparticles and solvents can be increased by ensuring high modifier-solvent penetration via adjusting the surface coverage and surface modifier.

  7. Control of the temperature responsiveness of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) copolymer using ultrasonic irradiation

    Masaki Kubo, Masato Higuchi, Tomoyuki Koshimura, Eita Shoji, Takao Tsukada

    Ultrasonics Sonochemistry　79　2021/11

    DOI： 10.1016/j.ultsonch.2021.105752 　

    ISSN： 1350-4177

    eISSN： 1873-2828

  8. Measurement of dynamic wetting using phase-shifting imaging ellipsometer: comparison of pure solvent and nanoparticle suspension on film thickness profile, apparent contact angle, and precursor film length

    Eita Shoji, Takahiro Kaneko, Tatsuya Yonemura, Masaki Kubo, Takao Tsukada, Atsuki Komiya

    Experiments in Fluids　62　(10)　2021/10

    DOI： 10.1007/s00348-021-03296-3 　

    ISSN： 0723-4864

    eISSN： 1432-1114

  9. Erratum: "Evaluation of the work of adhesion at the interface between a surface-modified metal oxide and an organic solvent using molecular dynamics simulations" [J. Chem. Phys. 154, 114703 (2021)]. International-journal

    Takamasa Saito, Eita Shoji, Masaki Kubo, Takao Tsukada, Gota Kikugawa, Donatas Surblys

    The Journal of chemical physics　155　(6)　069901-069901　2021/08/14

    DOI： 10.1063/5.0062003 　

  10. Numerical investigation of growth interface shape and compositional distributions in SiGe crystals grown by the TLZ method in the International Space Station Peer-reviewed

    Satoshi Baba, Yoshiaki Nakamura, Masahiro Mikami, Eita Shoji, Masaki Kubo, Takao Tsukada, Kyoichi Kinoshita, Yasutomo Arai, Yuko Inatomi

    Journal of Crystal Growth　566-567　126157-126157　2021/07

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcrysgro.2021.126157 　

    ISSN： 0022-0248

  11. Numerical Simulation of Laminar-Turbulent Transition in Magnetohydrodynamic Convection in an Electromagnetically Levitated Molten Droplet of Cu-Co Alloys Under a Static Magnetic Field Peer-reviewed

    Eita Shoji, Koki Tanada, Ryuji Takahashi, Shosei Isogai, Rikuto Suzuki, Masaki Kubo, Takao Tsukada, Atsuki Komiya, Hiroyuki Fukuyama

    Metallurgical and Materials Transactions B　52　(2)　896-902　2021/04

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s11663-021-02063-3 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  12. Evaluation of the work of adhesion at the interface between a surface-modified metal oxide and an organic solvent using molecular dynamics simulations Peer-reviewed

    Takamasa Saito, Eita Shoji, Masaki Kubo, Takao Tsukada, Gota Kikugawa, Donatas Surblys

    The Journal of Chemical Physics　154　(11)　114703-114703　2021/03/21

    Publisher: AIP Publishing

    DOI： 10.1063/5.0040900 　

    ISSN： 0021-9606

    eISSN： 1089-7690

  13. Compositional Dependence of Thermal Conductivity of Molten Cu-Fe Alloy at Low Fe Contents Peer-reviewed

    Eita Shoji, Naoto Ito, Masaki Kubo, Takao Tsukada, Hiroyuki Fukuyama

    Metallurgical and Materials Transactions B　51　(6)　2504-2509　2020/12

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s11663-020-01965-y 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  14. In-situ visualization of heavy oil behavior in supercritical water using neutron radiography Peer-reviewed

    Eita Shoji, Takahiro Kikuchi, Koshiro Yamagiwa, Masaki Kubo, Takao Tsukada, Seiichi Takami, Katsumi Sugimoto, Daisuke Ito, Yasushi Saito

    Chemical Engineering Science　225　115816　2020/11

    Publisher: Elsevier BV

    DOI： 10.1016/j.ces.2020.115816 　

    ISSN： 0009-2509

  15. Spatial structures formation of surface-modified nanoparticles in polymer nanocomposite thin films Peer-reviewed

    Naoto Kobayashi, Shogo Yagawa, Yusaku Nakamura, Masaki Kubo, Eita Shoji, Takao Tsukada, Tadafumi Adschiri

    Chemical Engineering and Processing - Process Intensification　155　108054-108054　2020/09

    Publisher: Elsevier BV

    DOI： 10.1016/j.cep.2020.108054 　

    ISSN： 0255-2701

  16. Prediction of surface tension of heavy oil based on principle of corresponding states combined with detailed composition and molecular structure analysis Peer-reviewed

    Yuichi Mukawa, Koshiro Yamagiwa, Eita Shoji, Masaki Kubo, Takao Tsukada, Shogo Teratani, Keita Katano

    Journal of the Japan Institute of Energy　99　(7)　75-81　2020/07

    DOI： 10.3775/jie.99.75 　

    ISSN： 0916-8753

  17. Corrigendum to ‘Neutron computed tomography of phase separation structures in solidified Cu-Co alloys and investigation of relationship between the structures and melt convection during solidification’ (Scripta Materialia (2020) 175 (29–32), (S1359646219305263), (10.1016/j.scriptamat.2019.08.041))

    Eita Shoji, Shosei Isogai, Rikuto Suzuki, Masaki Kubo, Takao Tsukada, Tetsuya Kai, Takenao Shinohara, Yoshihiro Matsumoto, Hiroyuki Fukuyama

    Scripta Materialia　178　244　2020/03/15

    Publisher: Acta Materialia Inc

    DOI： 10.1016/j.scriptamat.2019.11.038 　

    ISSN： 1359-6462

  18. A precise deconvolution method to derive methane hydrate cage occupancy ratios using Raman spectroscopy Peer-reviewed

    Yuya Hiraga, Takuya Sasagawa, Shinichiro Yamamoto, Hiroyuki Komatsu, Masaki Ota, Takao Tsukada, Richard L. Smith

    Chemical Engineering Science　214　115361-115361　2020/03

    Publisher: Elsevier BV

    DOI： 10.1016/j.ces.2019.115361 　

    ISSN： 0009-2509

  19. Neutron computed tomography of phase separation structures in solidified Cu-Co alloys and investigation of relationship between the structures and melt convection during solidification Peer-reviewed

    Eita Shoji, Shosei Isogai, Rikuto Suzuki, Masaki Kubo, Takao Tsukada, Tetsuya Kai, Takenao Shinohara, Yoshihiro Matsumoto, Hiroyuki Fukuyama

    Scripta Materialia　175　(15)　29-32　2020/01

    DOI： 10.1016/j.scriptamat.2019.08.041 　

  20. Compositional Dependence of Normal Spectral Emissivity of Molten Cu-Fe Alloy Peer-reviewed

    EITA SHOJI, RYUJI TAKAHASHI, SHOSEI ISOGAI, NAOTO ITO, MASAKI KUBO, TAKAO TSUKADA, HIROYUKI FUKUYAMA

    METALLURGICAL AND MATERIALS TRANSACTIONS B　50　(5)　2454-2458　2019/10

    DOI： 10.1007/s11663-019-01638-5 　

  21. Numerical Simulation of Structure Formation of Surface-Modified Nanoparticles during Solvent Evaporation Peer-reviewed

    S. Usune, T. Takahashi, M. Kubo, E. Shoji, T. Tsukada, O. Koike, R. Tatsumi, M. Fujita, T. Adschiri

    Journal of Chemical Engineering of Japan　52　(8)　680-693　2019/08

    DOI： 10.1252/jcej.19we012 　

    ISSN： 0021-9592

  22. Methane clathrate hydrate dissociation analyzed with Raman spectroscopy and a thermodynamic mass transfer model considering cage occupancy Peer-reviewed

    Hiroyuki Komatsu, Takuya Sasagawa, Shinichiro Yamamoto, Yuya Hiraga, Masaki Ota, Takao Tsukada, Richard, L. Smith

    Fluid Phase Equilibria　489　41-47　2019/06/15

    DOI： 10.1016/j.fluid.2019.02.004 　

    ISSN： 0378-3812

    eISSN： 1879-0224

  23. Numerical Evaluation for Measurement Conditions of Interfacial Tension between Molten Slag and Molten Iron by Oscillating Drop Technique in ISS Peer-reviewed

    Eita SHOJI, Ryuji TAKAHASHI, Naoto ITO, Masaki KUBO, Takao TSUKADA, Masahito WATANABE

    International Journal of Microgravity Science and Application　36　(2)　360200　2019/04

  24. Flow visualization of heavy oil in a packed bed using real-time neutron radiography Peer-reviewed

    SHOJI Eita, YAMAGIWA Koshiro, KUBO Masaki, TSUKADA Takao, TAKAMI Seiichi, SUGIMOTO Katsumi, ITO Daisuke, SAITO Yasushi, TERATANI Shogo

    CHEMICAL ENGINEERING SCIENCE　Vol.196　425-432　2019/03

    Publisher: Elsevier BV

    DOI： 10.1016/j.ces.2018.11.021 　

    ISSN： 0009-2509

  25. Numerical simulations of dispersion and aggregation behavior of surface-modified nanoparticles under shear flow Peer-reviewed

    S.Usune, M.Kubo, T. Tsukada, O.Koike, R.Tatsumi, M.Fujita, S.Takami, T. Adschiri

    Powder Technology,　343　113-121　2019/02

    DOI： 10.1016/j.powtec.2018.10.057 　

    ISSN： 0032-5910

    eISSN： 1873-328X

  26. Effects of vertical, horizontal and rotational magnetic fields on convection in an electromagnetically levitated droplet Peer-reviewed

    Feng L, Shi W.-Y, Shoji E, Kubo M, Tsukada T

    International Journal of Heat and Mass Transfer　787-796　2019

    DOI： 10.1016/j.ijheatmasstransfer.2018.10.101 　

  27. Three-step phase-shifting imaging ellipsometry to measure nanofilm thickness profiles Peer-reviewed

    Eita Shoji, Atsuki Komiya, Junnosuke Okajima, Masaki Kubo, Takao Tsukada

    Optics and Lasers in Engineering　112　145-150　2019/01/01

    DOI： 10.1016/j.optlaseng.2018.09.005 　

    ISSN： 0143-8166

  28. Numerical Simulation of Dispersion and Aggregation Behavior of Surface-modified Nanoparticles in Organic Solvents Peer-reviewed

    S. Usune, M.Ando, M. Kubo, T. Tsukada, K. Sugioka, O.Koike, R.Tatsumi, M.Fujita, S.Takami, T.Adschiri

    Journal of Chemial Engineering of Japan　51　(6)　492-500　2018/06

    DOI： 10.1252/jcej.17we197 　

    ISSN： 0021-9592

  29. Study of SiGe Crystal Growth Interface Processed in Microgravity Peer-reviewed

    Y. Arai, K. Kinoshita, T. Tsukada, M. Kubo, K. Abe, S. Sumioka, S. Baba, Y. Inatomi

    Crystal Growth and Design　18　(6)　3697-3703　2018/05

    DOI： 10.1021/acs.cgd.8b00544 　

    ISSN： 1528-7483

    eISSN： 1528-7505

  30. Crack Formation in Polymer Nanocomposite Thin Films Containing Surface-Modified Nanoparticles during Solution Casting Peer-reviewed

    N. Kobayashi, S. Sakai, Y. Sasaki, M. Kubo, T. Tsukada, K.Sugioka, S.Takami, T. Adschiri

    Journal of Chemical Engineering of Japan　51　(5)　460-468　2018/05

    DOI： 10.1252/jcej.17we323 　

    ISSN： 0021-9592

  31. Effect of Surface Modifier of Nanoparticles on Dewetting Behaviors of Polymer Nanocomposite Thin Films Peer-reviewed

    T. Kato, Y. Liu, Y. Murai, M. Kubo, E. Shoji, T. Tsukada, S. Takami, T. Adschiri

    Journal of Chemical Engineering of Japan　51　(3)　282-288　2018/03

    DOI： 10.1252/jcej.17we241 　

    ISSN： 0021-9592

  32. Synthesis of poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate) with low polydispersity using ultrasonic irradiation Peer-reviewed

    Kubo M, Sone T, Ohata M, Tsukada T

    Ultrasonics Sonochemistry　49　310-315　2018

    DOI： 10.1016/j.ultsonch.2018.08.022 　

  33. Thermal Conductivity Measurement of Molten Cu-Co Alloy Using an Electromagnetic Levitator Superimposed with a Static Magnetic Field Peer-reviewed

    Yuki Nakamura, Ryuji Takahashi, Eita Shoji, Masaki Kubo, Takao Tsukada, Masahito Uchikoshi, Hiroyuki Fukuyama

    Metallurgical and Materials Transactions B　48　(6)　3213-3218　2017/12

    DOI： 10.1007/s11663-017-1103-9 　

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  34. Normal Spectral Emissivity Measurement of Molten Cu-Co Alloy Using an Electromagnetic Levitator Superimposed with a Static Magnetic Field Peer-reviewed

    Shoya Ueno, Yuki Nakamura, Ken-Ichi Sugioka, Masaki Kubo, Takao Tsukada, Masahito Uchikoshi, Hiroyuki Fukuyama

    INTERNATIONAL JOURNAL OF THERMOPHYSICS　38　(2)　16　2017/02

    DOI： 10.1007/s10765-016-2136-z 　

    ISSN： 0195-928X

    eISSN： 1572-9567

  35. Effects of temperature gradient in the growth of Si0.5Ge0.5 crystals by the traveling liquidus-zone method on board the International Space Station Peer-reviewed

    K. Kinoshita, Y. Arai, Y. Inatomi, T. Tsukada, H. Miyata, R. Tanaka

    JOURNAL OF CRYSTAL GROWTH　455　49-54　2016/12

    DOI： 10.1016/j.jcrysgro.2016.09.024 　

    ISSN： 0022-0248

    eISSN： 1873-5002

  36. Relationship between size distribution of synthesized nanoparticles and flow and thermal fields in a flow-type reactor for supercritical hydrothermal synthesis Peer-reviewed

    Ken-ichi Sugioka, Kyohei Ozawa, Masaki Kubo, Takao Tsukada, Seiichi Takami, Tadafumi Adschiri, Katsumi Sugimoto, Nobuyuki Takenaka, Yasushi Saito

    JOURNAL OF SUPERCRITICAL FLUIDS　109　43-50　2016/03

    DOI： 10.1016/j.supflu.2015.11.008 　

    ISSN： 0896-8446

    eISSN： 1872-8162

  37. Interfacial phenomena and thermophysical properties of molten steel and oxides

    Masahito Watanabe, Kenta Onodera, Shoya Ueno, Takao Tsukada, Toshihiro Tanaka, Haruka Tamaru, Takehiko Ishikawa

    Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016　1245-1252　2016

    Publisher: Springer International Publishing AG

    DOI： 10.1007/978-3-319-48769-4_134 　

  38. P01 Control of Composition and Responsive Temperature of Copolymer of Ultrasonic Synthesis of Temperature-Responsive Copolymer

    Koshimura Tomoyuki, Sone Takuya, Kubo Masaki, Tsukada Takao

    Proceedings of the Annual Meeting of the Japan Society of Sonochemistry　25　33-34　2016

    Publisher: Japan Society of Sonochemistry

    DOI： 10.20577/pamjss.25.0_33 　

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    Poly (N-Isopropylacrylamide-co-2-hydroxyethyl methacrylate) (P(NIPAM-co-HEMA)) wassynthesized using ultrasonic irradiation in a mixed solvent of water and ethanol without chemical initiator. Theeffects of monomer molar ratio and ultrasonic intensity on time courses of molar fraction of NIPAM andresponsive temperature of synthesized polymers were investigated. In the early stage of the reaction, NIPAMfraction of copolymer was low, that is, the polymerization rate of HEMA is high. This is because the radicalstability of HEMA is higher than that of NIPAM. The relationship between conversion and molar fraction ofNIPAM did not depend on the ultrasound intensity. The lower the ratio of NIPAM, the lower the critical value(LCST) because HEMA is more hydrophobic than NIPAM. The higher polymerization rate resulted in the higherLCST. Those results suggested that the composition and responsive temperature of the copolymer can becontrolled by changing the irradiation time and the ultrasound intensity.

  39. 2-2-3 Multiple dissociation mechanism model for methane hydrate

    ONO Yutaro, OTA Masaki, WATANABE Masaru, TSUKADA Takao, Smith Richard Lee Jr., KOMATSU Hiroyuki

    Proceedings of the Annual Conference of The Japan Institute of Energy　25　30-31　2016

    Publisher: The Japan Institute of Energy

    DOI： 10.20550/jietaikaiyoushi.25.0_30 　

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    <p>In this work, a model that can be used in large-scale simulations was developed for studying the dissociation of methane hydrate. In the model, two mechanisms were assumed: (i) dissociation of methane hydrate as as a concentration driving force difference and (ii) decomposition of hydrate host cage of the methane hydrate according to a chemical potential driving force ignoring heat effects of the endothermic reaction. Experimental data of decomposition rates at 278 K, 4.39 MPa were correlated by the model assuming that (i) and (ii) occur in parallel using an effective rate constant of decomposition K as a fitting parameter. As a result, the rate constant of decomposition K was estimated to be 1.73 × 10-9 at 278 K.</p>

  40. Experimental and theoretical studies on compressive deformation characteristics of particle aggregates in water Peer-reviewed

    Masaki Kubo, Ryutaro Ishibashi, Ken-ichi Sugioka, Takao Tsukada, Osamu Koike, Masahiro Fujita

    POWDER TECHNOLOGY　287　431-438　2016/01

    DOI： 10.1016/j.powtec.2015.10.010 　

    ISSN： 0032-5910

    eISSN： 1873-328X

  41. Measurement and prediction of surface tension of vacuum distillates and residues from heavy oil Peer-reviewed

    Yuichi Mukawa, Sho Tsujimura, Koshiro Yamagiwa, Masaki Kubo, Takao Tsukada, Shogo Teratani

    Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy　95　(12)　1142-1148　2016

    Publisher: Japan Institute of Energy

    DOI： 10.3775/jie.95.1142 　

    ISSN： 0916-8753

  42. SiGe Crystal Growth by the Traveling Liquidus-Zone Method aboard the International Space Station Peer-reviewed

    Kyoichi KINOSHITA, Yasutomo ARAI, Yuko INATOMI, Takao TSUKADA, Hiroaki MIYATA, Ryota TANAKA, Keita ABE, Sara SUMIOKA, Masaki KUBO, Satoshi BABA

    Int. J. Microgravity Sci. Appl.　33　(2)　330213　2016

  43. Effect of Static Magnetic Field on Recalescence and Surface Velocity Field in Electromagnetically Levitated Molten CuCo Droplet in Undercooled State Peer-reviewed

    Tsubasa Kitahara, Koki Tanada, Shoya Ueno, Ken-Ichi Sugioka, Masaki Kubo, Takao Tsukada, Masahito Uchikoshi, Hiroyuki Fukuyama

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　46　(6)　2706-2712　2015/12

    DOI： 10.1007/s11663-015-0441-8 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  44. Annealing-promoted unidirectional migration of organic-modified nanoparticles embedded two-dimensionally in polymer thin films Peer-reviewed

    Yang Liu, Takumi Kato, Masaki Kubo, Ken-Ichi Sugioka, Takao Tsukada, Seiichi Takami, Tadafumi Adschiri

    JOURNAL OF APPLIED POLYMER SCIENCE　132　(45)　42760　2015/12

    DOI： 10.1002/app.42760 　

    ISSN： 0021-8995

    eISSN： 1097-4628

  45. Development of a Global Model of Heat Transfer in the Czochralski Furnace Taking into Account Specular Reflection at the Crystal Surface Peer-reviewed

    Keita Abe, Yuta Nagato, Ken-ichi Sugioka, Masaki Kubo, Takao Tsukada, Shigenao Maruyama

    NUMERICAL HEAT TRANSFER PART A-APPLICATIONS　67　(12)　1311-1323　2015/06

    DOI： 10.1080/10407782.2014.965090 　

    ISSN： 1040-7782

    eISSN： 1521-0634

  46. Compositional uniformity of a Si0.5Ge0.5 crystal grown on board the International Space Station Peer-reviewed

    K. Kinoshita, Y. Arai, Y. Inatomi, T. Tsukada, H. Miyata, R. Tanaka, J. Yoshikawa, T. Kihara, H. Tomioka, H. Shibayama, Y. Kubota, Y. Warashina, Y. Ishizuka, Y. Harada, S. Wada, T. Ito, N. Nagai, K. Abe, S. Sumioka, M. Takayanagi, S. Yoda

    JOURNAL OF CRYSTAL GROWTH　419　47-51　2015/06

    DOI： 10.1016/j.jcrysgro.2015.02.086 　

    ISSN： 0022-0248

    eISSN： 1873-5002

  47. SiGe crystal growth aboard the international space station Peer-reviewed

    K. Kinoshita, Y. Arai, T. Tsukada, Y. Inatomi, H. Miyata, R. Tanaka

    JOURNAL OF CRYSTAL GROWTH　417　31-36　2015/05

    DOI： 10.1016/j.jcrysgro.2014.09.048 　

    ISSN： 0022-0248

    eISSN： 1873-5002

  48. Direct numerical simulations of drag and lift forces acting on a spherical bubble near a plane wall Peer-reviewed

    Ken-ichi Sugioka, Takao Tsukada

    INTERNATIONAL JOURNAL OF MULTIPHASE FLOW　71　32-37　2015/05

    DOI： 10.1016/j.ijmultiphaseflow.2014.12.001 　

    ISSN： 0301-9322

    eISSN： 1879-3533

  49. A08 Reaction kinetic analysis of ultrasonic synthesis process of temperature-responsive copolymer

    Kubo Masaki, Sone Takuya, Tsukada Takao

    Proceedings of the Annual Meeting of the Japan Society of Sonochemistry　24　17-18　2015

    Publisher: The Japan Society of Sonochemistry

    DOI： 10.20577/pamjss.24.0_17 　

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    Poly (N-Isopropylacrylamide-co-2-hydroxyethyl methacrylate) (P(NIPAM-co-HEMA)) was synthesized using ultrasonic irradiation in a mixed solvent of water and ethanol without chemical initiator. Effect of ultrasonic intensity on time courses of conversion ratio, copolymer composition, number average molecular weight, and polydispersity of synthesized polymers was investigated in order to clarify the reaction mechanism of radical copolymerization of temperature-responsive polymer with low molecular weight distribution (i.e., low polydispersity). The reaction kinetic model for ultrasonic synthesis process of P(NIPAM-co-HEMA) was constructed with considering the cross-propagation reaction and cross-termination reaction in the radical copolymerization of NIPAM and HEMA. The experimental results showed that PNIPAM fraction of the copolymer in the early stage was lower than initial NIPAM fraction. Those results suggested that HEMA terminated radical was more stable than NIPAM terminated radical so that consumption rate of NIPAM was slower than that of HEMA. The calculated results supported that the cross propagation reaction between HEMA terminated radical and NIPAM monomer was much slower than that between NIPAM terminated radical and HEMA monomer.

  50. Study on Interfacial Phenomena High Temperature Liquids by Electrostatic Levitation Furnace in ISS -Interfacial Tension between Molten Oxides and Molten Steel-

    Watanabe Masahito, Tanaka Toshihiro, Tsukada Takao, Ishikawa Takehiko, Tamaru Haruka, Mizuno Akitoshi

    INTERNATIONAL JOURNAL OF MICROGRAVITY SCIENCE AND APPLICATION　32　(1)　2015

    ISSN： 0915-3616

  51. In-situ neutron tomography on mixing behavior of supercritical water and room temperature water in a tubular flow reactor Peer-reviewed

    Seiichi Takami, Ken-ichi Sugioka, Kyohei Ozawa, Takao Tsukada, Tadafumi Adschiri, Katsumi Sugimoto, Nobuyuki Takenaka, Yasushi Saito

    PROCEEDINGS OF THE 10TH WORLD CONFERENCE ON NEUTRON RADIOGRAPHY (WCNR-10)　69　564-569　2015

    DOI： 10.1016/j.phpro.2015.07.080 　

    ISSN： 1875-3892

  52. 国際宇宙ステーションでの液滴振動法による溶融スラグ／溶融鉄界面張力の測定に関する数値解析的検討 Peer-reviewed

    上野翔也, 久保正樹, 塚田隆夫, 杉岡健一, 渡邉匡人

    International Journal of Microgravity Science and Application　32　320408　2015

  53. Numerical simulations of SiGe crystal growth by the traveling liquidus-zone method in a microgravity environment Peer-reviewed

    K. Abe, S. Sumioka, K. -I. Sugioka, M. Kubo, T. Tsukada, K. Kinoshita, Y. Arai, Y. Inatomi

    JOURNAL OF CRYSTAL GROWTH　402　71-77　2014/09

    DOI： 10.1016/j.jcrysgro.2014.05.007 　

    ISSN： 0022-0248

    eISSN： 1873-5002

  54. Study on the Effect of Melt Convection on Phase Separation Structures in Undercooled CuCo Alloys Using an Electromagnetic Levitator Superimposed with a Static Magnetic Field Peer-reviewed

    Ken-ichi Sugioka, Takamitsu Inoue, Tsubasa Kitahara, Ryo Kurosawa, Masaki Kubo, Takao Tsukada, Masahito Uchikoshi, Hiroyuki Fukuyama

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　45　(4)　1439-1445　2014/08

    DOI： 10.1007/s11663-014-0052-9 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  55. Thermal Dewetting Behavior of Polystyrene Composite Thin Films with Organic-Modified Inorganic Nanoparticles Peer-reviewed

    Masaki Kubo, Yosuke Takahashi, Takeshi Fujii, Yang Liu, Ken-ichi Sugioka, Takao Tsukada, Kimitaka Minami, Tadafumi Adschiri

    LANGMUIR　30　(29)　8956-8964　2014/07

    DOI： 10.1021/la502009x 　

    ISSN： 0743-7463

  56. Neutron Radiography and Numerical Simulation of Mixing Behavior in a Reactor for Supercritical Hydrothermal Synthesis Peer-reviewed

    Ken-ichi Sugioka, Kyohei Ozawa, Takao Tsukada, Seiichi Takami, Tadafumi Adschiri, Katsumi Sugimoto, Nobuyuki Takenaka, Yasushi Saito

    AICHE JOURNAL　60　(3)　1168-1175　2014/03

    DOI： 10.1002/aic.14313 　

    ISSN： 0001-1541

    eISSN： 1547-5905

  57. Growth of a Si0.50Ge0.50 crystal by the traveling liquidus-zone (TLZ) method in microgravity Peer-reviewed

    K. Kinoshita, Y. Arai, Y. Inatomi, T. Tsukada, S. Adachi, H. Miyata, R. Tanaka, J. Yoshikawa, T. Kihara, H. Tomioka, H. Shibayama, Y. Kubota, Y. Warashina, Y. Sasaki, Y. Ishizuka, Y. Harada, S. Wada, C. Harada, T. Ito, M. Takayanagi, S. Yoda

    JOURNAL OF CRYSTAL GROWTH　388　12-16　2014/02

    DOI： 10.1016/j.jcrysgro.2013.11.020 　

    ISSN： 0022-0248

    eISSN： 1873-5002

  58. P8 Ultrasonic Synthesis of Temperature-Responsive Copolymer and its Characterization(Poster Session)

    Sone Takuya, Kubo Masaki, Sugioka Ken-ichi, Tsukada Takao

    Proceedings of the Annual Meeting of the Japan Society of Sonochemistry　23　45-46　2014

    Publisher: The Japan Society of Sonochemistry

    DOI： 10.20577/pamjss.23.0_45 　

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    Poly (N-Isopropylacrylamide-co-2-hydroxyethyl methacrylate) (P(NIPAM-co-HEMA)) was synthesized using ultrasonic irradiation in a mixed solvent of water and ethanol without chemical initiator. Effect of monomer molar ratio on time courses of conversion to polymer, number average molecular weight, and polydispersity of synthesized polymers were investigated in order to determine the optimum conditions to synthesize the temperature-responsive polymer with low molecular weight distribution (i.e., low polydispersity). The higher the ratio of NIPAM to HEMA, the higher the polymerization rate because ethanol acts as a scavenger in radical polymerization. The higher ratio of NIPAM also resulted in faster polymer degradation. Copolymers with low polydispersity were obtained at any monomer molar ratio. The transmittance of aqueous solutions of copolymers synthesized with various monomer molar ratios decreased abruptly at a critical temperature which depends on the monomer molar ratio. The lower the ratio of NIPAM, the lower the critical value (LCST) because NIPAM is less hydrophobic than HEMA.

  59. Concentration Dependence of Molar Volume of Binary Si Alloys in Liquid State Peer-reviewed

    Akitoshi Mizuno, Hiroya Kawauchi, Mitsuhiro Tanno, Kentaro Murai, Hidekazu Kobatake, Hiroyuki Fukuyama, Takao Tsukada, Masahito Watanabe

    ISIJ INTERNATIONAL　54　(9)　2120-2124　2014

    DOI： 10.2355/isijinternational.54.2120 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  60. Densities and thermal conductivities of N-alkylpyridinium tetrafluoroborates at high pressure Peer-reviewed

    Daisuke Tomida, Satoshi Kenmochi, Kun Qiao, Takao Tsukada, Chiaki Yokoyama

    FLUID PHASE EQUILIBRIA　340　31-36　2013/02

    DOI： 10.1016/j.fluid.2012.12.008 　

    ISSN： 0378-3812

  61. P26 Ultrasonic Synthesis of Poly (N-Isopropylacrylamide-co-2-Hydroxyethyl Methacrylate)(Poster Session)

    Ohata Masahiro, Kubo Masaki, Sugioka Ken-ichi, Tsukada Takao

    Proceedings of the Annual Meeting of the Japan Society of Sonochemistry　22　73-74　2013

    Publisher: The Japan Society of Sonochemistry

    DOI： 10.20577/pamjss.22.0_73 　

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    Poly (N-Isopropylacrylamide-co-2-hydroxyethyl methacrylate) (P(NIPAAm-co-HEMA)) was synthesized using ultrasonic irradiation without chemical initiator in the mixed solvent of water and ethanol. Effects of solvent composition, monomer molar ratio, and reaction temperature on time course of conversion to polymer, number average molecular weight, and polydispersity were investigated in order to synthesize the polymer with low molecular weight distribution (i.e., low polydispersity). Lower ethanol composition of solvent resulted in higher conversion to polymer, faster decrease of molecular weight, and lower polydispersity. Ethanol acts as a scavenger for radical polymerization, so that higher ethanol composition decreases the polymerization rate. Faster polymerization rate gives faster generation of polymer, and faster degradation of generated polymer, which resulted in faster decrease of molecular weight and lower polydispersity. Higher NIPAAm ratio resulted in higher polymerization rate, faster polymer degradation rate, and lower polydispersity. In the case of the homopolymer of PNIPAAm and PHEMA, PNIPAAm radical has lower reaction activity with ethanol than PHEMA radical, so that PNIPAAm polymerizes faster than PHEMA. Reaction temperature slightly affected the reaction rate. Temperature dependence of polymerization is positive but that of radical formation is negative, and the effect of those two factors might be almost same.

  62. RADIATION HEAT TRANSFER ANALYSIS IN A SEMITRANSPARENT SINGLE CRYSTAL WITH SPECULAR SURFACES: APPLICATION OF REM2 Peer-reviewed

    Keita Abe, Ken-ichi Sugioka, Masaki Kubo, Takao Tsukada, Shigenao Maruyama

    NUMERICAL HEAT TRANSFER PART A-APPLICATIONS　63　(1)　1-13　2013

    DOI： 10.1080/10407782.2012.725008 　

    ISSN： 1040-7782

  63. Normal spectral emissivity measurement of molten copper using an electromagnetic levitator superimposed with a static magnetic field Peer-reviewed

    Ryo Kurosawa, Takamitsu Inoue, Yuya Baba, Ken-ichi Sugioka, Masaki Kubo, Takao Tsukada, Hiroyuki Fukuyama

    MEASUREMENT SCIENCE AND TECHNOLOGY　24　(1)　015603　2013/01

    DOI： 10.1088/0957-0233/24/1/015603 　

    ISSN： 0957-0233

    eISSN： 1361-6501

  64. Application of neutron radiography to flow visualization in supercritical water Peer-reviewed

    N. Takenaka, K. Sugimoto, S. Takami, K. Sugioka, T. Tsukada, T. Adschiri, Y. Saito

    7TH INTERNATIONAL TOPICAL MEETING ON NEUTRON RADIOGRAPHY (ITMNR-7)　43　264-268　2013

    DOI： 10.1016/j.phpro.2013.03.030 　

    ISSN： 1875-3892

  65. Viscosity and Thermal Conductivity of 1-Hexyl-3-methylimidazolium Tetrafluoroborate and 1-Octyl-3-methylimidazolium Tetrafluoroborate at Pressures up to 20 MPa Peer-reviewed

    Daisuke Tomida, Satoshi Kenmochi, Takao Tsukada, Kun Qiao, Quanxi Bao, Chiaki Yokoyama

    International Journal of Thermophysics　33　959-969　2012/06

    DOI： 10.1007/s10765-012-1233-x 　

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    7109

  66. Thermal conductivity measurement of molten copper using an electromagnetic levitator superimposed with a static magnetic field Peer-reviewed

    Yuya Baba, Takamitsu Inoue, Ken-ichi Sugioka, Hidekazu Kobatake, Hiroyuki Fukuyama, Masaki Kubo, Takao Tsukada

    MEASUREMENT SCIENCE AND TECHNOLOGY　23　(4)　045103　2012/04

    DOI： 10.1088/0957-0233/23/4/045103 　

    ISSN： 0957-0233

    eISSN： 1361-6501

  67. Neutron radiography on tubular flow reactor for hydrothermal synthesis: In situ monitoring of mixing behavior of supercritical water and room-temperature water Peer-reviewed

    Seiichi Takami, Ken-ichi Sugioka, Takao Tsukada, Tadafumi Adschiri, Katsumi Sugimoto, Nobuyuki Takenaka, Yasushi Saito

    JOURNAL OF SUPERCRITICAL FLUIDS　63　46-51　2012/03

    DOI： 10.1016/j.supflu.2011.11.010 　

    ISSN： 0896-8446

    eISSN： 1872-8162

  68. Noncontact Laser Modulation Calorimetry for High-Purity Liquid Iron Peer-reviewed

    Kazutoshi Sugie, Hidekazu Kobatake, Masahito Uchikoshi, Minoru Isshiki, Ken-ichi Sugioka, Takao Tsukada, Hiroyuki Fukuyama

    JAPANESE JOURNAL OF APPLIED PHYSICS　50　(11)　11RD04　2011/11

    DOI： 10.1143/JJAP.50.11RD04 　

    ISSN： 0021-4922

  69. Relationship between Applied Static Magnetic Field Strength and Thermal Conductivity Values of Molten Materials Measured Using the EML Technique Peer-reviewed

    Yuya Baba, Ken-ichi Sugioka, Masaki Kubo, Takao Tsukada, Kazutoshi Sugie, Hidekazu Kobatake, Hiroyuki Fukuyama

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　44　(5)　321-327　2011

    DOI： 10.1252/jcej.11we035 　

    ISSN： 0021-9592

  70. Development of Thermophysical Property Measurement for Liquid Fe Using Noncontact Laser Modulation Calorimetry Peer-reviewed

    Kazutoshi Sugie, Hidekazu Kobatake, Hiroyuki Fukuyama, Yuya Baba, Ken-ichi Sugioka, Takao Tsukada

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　96　(12)　673-682　2010/12

    ISSN： 0021-1575

  71. Thermal Conductivities of Imidazolium-Based Ionic Liquid + CO2 Mixtures Peer-reviewed

    D. Tomida, S. Kenmochi, T. Tsukada, K. Qiao, C. Yokoyama

    INTERNATIONAL JOURNAL OF THERMOPHYSICS　31　(10)　1888-1895　2010/10

    DOI： 10.1007/s10765-008-0506-x 　

    ISSN： 0195-928X

  72. Effect of static magnetic field on thermal conductivity measurement of a molten Si droplet by an EML technique: Comparison between numerical and experimental results Peer-reviewed

    Ken-ichi Sugioka, Takao Tsukada, Hiroyuki Fukuyama, Hidekazu Kobatake, Satoshi Awaji

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　53　(19-20)　4228-4232　2010/09

    DOI： 10.1016/j.ijheatmasstransfer.2010.05.045 　

    ISSN： 0017-9310

  73. Global analysis of heat transfer in CZ crystal growth of oxide taking into account three-dimensional unsteady melt convection: Investigation of the coupling method between 2D and 3D models Peer-reviewed

    T. Tsukada, K. -I. Sugioka, C. J. Jing, M. Kobayashi

    JOURNAL OF CRYSTAL GROWTH　312　(7)　997-1004　2010/03

    DOI： 10.1016/j.jcrysgro.2009.12.072 　

    ISSN： 0022-0248

  74. Numerical simulation of GaN single-crystal growth process in ammonothermal autoclave - Effects of baffle shape Peer-reviewed

    Y. Masuda, A. Suzuki, Y. Mikawa, Y. Kagamitani, T. Ishiguro, C. Yokoyama, T. Tsukada

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　53　(5-6)　940-943　2010/02

    DOI： 10.1016/j.ijheatmasstransfer.2009.11.027 　

    ISSN： 0017-9310

  75. 静磁場による電磁浮遊炉内の溶融液滴内対流の層流遷移

    杉岡 健一, 塚田 隆夫, 小畠 秀和, 奮 博之

    化学工学会 研究発表講演要旨集　2010　523-523　2010

    Publisher: 公益社団法人 化学工学会

    DOI： 10.11491/scej.2010f.0.523.0 　

  76. Noncontact modulated laser calorimetry in a dc magnetic field for stable and supercooled liquid silicon Peer-reviewed

    H.Kobatake, H.Fukuyama, T.Tsukada, S.Awaji

    Measurement Science & Technology　21　25901-1-25901-9　2010

    DOI： 10.1088/0957-0233/21/2/025901 　

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    5785

  77. Thermal Conductivities of Imidazolium-Based Ionic Liquid + CO2 Mixtures Peer-reviewed

    Hidekazu Kobatake, Hiroyuki Fukuyama, Takao Tsukada, Satoshi Awaji

    Measurement Science and Technology　21　025901　2010

  78. Development of thermophysical property measurement for liquid fe using noncontact laser modulation calorimetry Peer-reviewed

    Kazutoshi Sugie, Hidekazu Kobatake, Hiroyuki Fukuyama, Yuya Baba, Ken-Ichi Sugioka, Takao Tsukada

    Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　96　(12)　673-682　2010

    DOI： 10.2355/tetsutohagane.96.673 　

    ISSN： 0021-1575

  79. Effect of static magnetic field on a thermal conductivity measurement of a molten droplet using an electromagnetic levitation technique Peer-reviewed

    Takao Tsukada, Ken-ichi Sugioka, Tomoya Tsutsumino, Hiroyuki Fukuyama, Hidekazu Kobatake

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　52　(21-22)　5152-5157　2009/10

    DOI： 10.1016/j.ijheatmasstransfer.2009.04.020 　

    ISSN： 0017-9310

  80. 電磁浮遊炉内の溶融液滴内対流に及ぼす静磁場印加効果

    杉岡 健一, 塚田 隆夫, 小畠 秀和, 奮 博之

    化学工学会 研究発表講演要旨集　2009　452-452　2009

    Publisher: 公益社団法人 化学工学会

    DOI： 10.11491/scej.2009.0.452.0 　

  81. 一様な脈動流中の球形粒子に働く抗力の評価

    杉岡 健一, 見上 信, 塚田 隆夫, 小森 悟

    化学工学会 研究発表講演要旨集　2009　134-134　2009

    Publisher: 公益社団法人 化学工学会

    DOI： 10.11491/scej.2009.0.134.0 　

  82. 酸化物CZ炉総合熱解析 -2D及び3Dモデルの統合法の検討

    塚田 隆夫, 杉岡 健一, 小林 正樹, 敬 成君

    化学工学会 研究発表講演要旨集　2009　536-536　2009

    Publisher: 公益社団法人 化学工学会

    DOI： 10.11491/scej.2009f.0.536.0 　

  83. Numerical simulation of natural convection heat transfer in a ZnO single-crystal growth hydrothermal autoclave-Effects of fluid properties Peer-reviewed

    Yoshio Masuda, Akira Suzuki, Yutaka Mikawa, Chiaki Yokoyama, Takao Tsukada

    JOURNAL OF CRYSTAL GROWTH　311　(3)　675-679　2009/01

    DOI： 10.1016/j.jcrysgro.2008.09.068 　

    ISSN： 0022-0248

  84. Fluid force acting on a rigid sphere in the streamwise oscillating uniform flow Peer-reviewed

    Ken-Ichi Sugioka, Makoto Mikami, Takao Tsukada, Satoru Komori

    Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B　75　(759)　2128-2134　2009

    Publisher: Japan Society of Mechanical Engineers

    DOI： 10.1299/kikaib.75.759_2128 　

    ISSN： 0387-5016

  85. Noncontact Modulated Laser Calorimetry for Liquid Austenitic Stainless Steel in dc Magnetic Field Peer-reviewed

    Hiroyuki Fukuyama, Kakeru Takahashi, Shoji Sakashita, Hidekazu Kobatake, Takao Tsukada, Satoshi Awaji

    ISIJ INTERNATIONAL　49　(9)　1436-1442　2009

    DOI： 10.2355/isijinternational.49.1436 　

    ISSN： 0915-1559

  86. Thermophysical Properties of Molten Silicon Peer-reviewed

    Taketoshi Hibiya, Hiroyuki Fukuyama, Takao Tsukada, Masahito Watanabe

    Crystal Growth Technology: From Fundamentals and Simulation to Large-scale Production　103-136　2008/11/25

    Publisher: Wiley-VCH Verlag GmbH &amp; Co. KGaA

    DOI： 10.1002/9783527623440.ch4 　

  87. Noncontact modulated laser calorimetry of liquid silicon in a static magnetic field Peer-reviewed

    Hidekazu Kobatake, Hiroyuki Fukuyama, Lzuru Minato, Takao Tsukada, Satoshi Awaji

    JOURNAL OF APPLIED PHYSICS　104　(5)　054901　2008/09

    DOI： 10.1063/1.2966455 　

    ISSN： 0021-8979

  88. 静磁場印加電磁浮遊法による高温融体の熱伝導率測定に及ぼす対流の影響

    杉岡 健一, 堤之 朋也, 塚田 隆夫, 小畠 秀和, 奮 博之

    化学工学会 研究発表講演要旨集　2008　691-691　2008

    Publisher: 公益社団法人 化学工学会

    DOI： 10.11491/scej.2008f.0.691.0 　

  89. 温度・濃度勾配共存下での相分離挙動に関する数値シミュレーション

    小野木 大介, 杉岡 健一, 塚田 隆夫, 小林 正樹

    化学工学会 研究発表講演要旨集　2008　443-443　2008

    Publisher: 公益社団法人 化学工学会

    DOI： 10.11491/scej.2008.0.443.0 　

  90. Numerical Simulation of Hydrothermal Autoclave for Single-Crystal Growth Process Peer-reviewed

    Yoshio Masuda, Akira Suzuki, Yutaka Mikawa, Valery Chani, Chiaki Yokoyama, Takao Tsukada

    JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY　3　(3)　540-551　2008

    DOI： 10.1299/jtst.3.540 　

    ISSN： 1880-5566

  91. Global analysis of heat transfer in CZ crystal growth of oxide taking into account three-dimensional unsteady melt convection: Effect of meniscus shape Peer-reviewed

    C. J. Jing, S. Ihara, K. -I. Sugioka, T. Tsukada, M. Kobayashi

    JOURNAL OF CRYSTAL GROWTH　310　(1)　204-213　2008/01

    DOI： 10.1016/j.jcrysgro.2007.10.001 　

    ISSN： 0022-0248

  92. Thermophysical Property Measurement of Molten Semiconductors: Preparatory Work for SEMITHERM Program Peer-reviewed

    Taketoshi Hibiya, M. Watanabe, S. Ozawa, T. Tsukada

    HIGH TEMPERATURE MATERIALS AND PROCESSES　27　(6)　449-460　2008

    ISSN： 0334-6455

    eISSN： 2191-0324

  93. Global analysis of heat transfer considering three-dimensional IN unsteady melt flow in CZ crystal growth of oxide Peer-reviewed

    C. J. Jing, S. Hara, K.-I Sugioka, T. Tsukada, M. Kobayashi, M. Mito, C. Yokoyama

    JOURNAL OF CRYSTAL GROWTH　307　(1)　235-244　2007/09

    DOI： 10.1016/j.jcrysgro.2007.06.012 　

    ISSN： 0022-0248

  94. Thermal Conductivities of [bmim][PF6], [hmim][PF6], and [omim][PF6] from 294 to 335 K at Pressures up to 20 MPa Peer-reviewed

    D. Tomida, S. Kenmochi, T. Tsukada, K. Qiao, C. Yokoyama

    INTERNATIONAL JOURNAL OF THERMOPHYSICS　28　(4)　1147-1160　2007/08

    DOI： 10.1007/s10765-007-0241-8 　

    ISSN： 0195-928X

  95. Determination of thermal conductivity and emissivity of electromagnetically levitated high-temperature droplet based on the periodic laser-heating method: Theory Peer-reviewed

    Takao Tsukada, Hiroyuki Fukuyama, Hidekazu Kobatake

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　50　(15-16)　3054-3061　2007/07

    DOI： 10.1016/j.ijheatmasstransfer.2006.12.026 　

    ISSN： 0017-9310

  96. Development of modulated laser calorimetry using a solid platinum sphere as a reference Peer-reviewed

    Hiroyuki Fukuyama, Hidekazu Kobatake, Kakeru Takahashi, Izuru Minato, Takao Tsukada, Satoshi Awaji

    MEASUREMENT SCIENCE AND TECHNOLOGY　18　(7)　2059-2066　2007/07

    DOI： 10.1088/0957-0233/18/7/036 　

    ISSN： 0957-0233

    eISSN： 1361-6501

  97. A global analysis of heat transfer in the CZ crystal growth of oxide: Recent developments in the model Peer-reviewed

    Takao Tsukada, Masaki Kobayashi, Chengjun Jing

    JOURNAL OF CRYSTAL GROWTH　303　(1)　150-155　2007/05

    DOI： 10.1016/j.jcrysgro.2006.11.344 　

    ISSN： 0022-0248

  98. Noncontact measurement of thermal conductivity of liquid silicon in a static magnetic field Peer-reviewed

    Hidekazu Kobatake, Hiroyuki Fukuyama, Izuru Minato, Takao Tsukada, Satoshi Awaji

    APPLIED PHYSICS LETTERS　90　(9)　094102　2007/02

    DOI： 10.1063/1.2710220 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  99. 3次元非定常融液対流を考慮した酸化物単結晶CZ炉の総合熱解析

    敬 成君, 猪原 俊介, 杉岡 健一, 塚田 隆夫, 小林 正樹

    化学工学会 研究発表講演要旨集　2007　305-305　2007

    Publisher: 公益社団法人 化学工学会

    DOI： 10.11491/scej.2007.0.305.0 　

  100. 超臨界水を用いたバルク単結晶育成時の炉内流動解析

    増田 善雄, 鈴木 明, 横山 千昭, 三川 豊, 塚田 隆夫

    化学工学会 研究発表講演要旨集　2007　306-306　2007

    Publisher: 公益社団法人 化学工学会

    DOI： 10.11491/scej.2007.0.306.0 　

  101. 微粒子凝集体固有の圧縮変形特性の測定

    猪口 剛, 杉岡 健一, 塚田 隆夫, 菊地 洋介, 横山 千昭

    化学工学会 研究発表講演要旨集　2007　243-243　2007

    Publisher: 公益社団法人 化学工学会

    DOI： 10.11491/scej.2007.0.243.0 　

  102. 水熱合成法によるバルク単結晶育成時のオートクレーブの熱解析 Peer-reviewed

    増田善雄, 鈴木 明, 三上 豊, Valery Chani, 横山千昭, 塚田隆夫

    Thermal Science & Engineering　15　(4)　189-196　2007

    Publisher: The Heat Transfer Society of Japan

    DOI： 10.11368/tse.15.189 　

    ISSN： 0918-9963

    More details Close

    Numerical simulation about the hydrothermal process of two inches bulk single crystal growth has been done. The autoclave is assumed to be axisymmetric. In the present research, the authors discuss the natural convection heat transfer when the shape of baffles is flat or funnel-shaped. When the funnel-shaped baffle is used, the amount of flowing between a raw material zone and a crystal growth zone increases significantly. However, temperature difference between the two zones does not become very small. Therefore the funnel-shaped baffle is effective in hydrothermal crystal growth process from the viewpoint of transport phenomena. It is found that the best angle of the baffle is about 20 degrees in our calculation. Similar results are provided when the porous model in the raw material zone is employed.

  103. 高圧下における1-buthyl-3- methylimidazolium tetrafluoroborateの熱伝導率測定 Peer-reviewed

    冨田大輔, 剱持智, 塚田隆夫, 横山千昭

    熱物性　20　173-178　2006

    DOI： 10.2963/jjtp.20.173 　

  104. Phase separation behavior in a binary mixture fluid layer subjected to vertical temperature and concentration gradients Peer-reviewed

    T Kinoshita, T Tsukada, M Hozawa, C Yokoyama, M Kobayashi

    CHEMICAL ENGINEERING SCIENCE　60　(24)　6939-6946　2005/12

    DOI： 10.1016/j.ces.2005.06.017 　

    ISSN： 0009-2509

    eISSN： 1873-4405

  105. Aggregation behavior of latex particles in shear flow confined between two parallel plates Peer-reviewed

    Y Kikuchi, H Yamada, H Kunimori, T Tsukada, M Hozawa, C Yokoyama, M Kubo

    LANGMUIR　21　(8)　3273-3278　2005/04

    DOI： 10.1021/la048011j 　

    ISSN： 0743-7463

  106. Sensitivity analyses of the thermophysical properties of silicon melt and crystal Peer-reviewed

    M Mito, T Tsukada, M Hozawa, C Yokoyama, YR Li, N Imaishi

    MEASUREMENT SCIENCE AND TECHNOLOGY　16　(2)　457-466　2005/02

    DOI： 10.1088/0957-0233/16/2/018 　

    ISSN： 0957-0233

    eISSN： 1361-6501

  107. Numerical Simulation of CZ Crystal Growth of Oxide Invited Peer-reviewed

    T. Tsukada, M. Kobayashi, C.J. Jing, N. Imaishi

    Fluid Dynamics and Materials Processing　1　45-62　2005

  108. Numerical simulation of the Czochralski growth process of oxide crystals with a relatively thin optical thickness Peer-reviewed

    A Hayashi, M Kobayashi, C Jing, T Tsukada, M Hozawa

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　47　(25)　5501-5509　2004/12

    DOI： 10.1016/j.ijheatmasstransfer.2004.06.036 　

    ISSN： 0017-9310

  109. Oxygen-transport phenomena in a small silicon Czochralski furnace Peer-reviewed

    YR Li, MW Li, N Imaishi, Y Akiyama, T Tsukada

    JOURNAL OF CRYSTAL GROWTH　267　(3-4)　466-474　2004/07

    DOI： 10.1016/j.jcrysgro.2004.04.049 　

    ISSN： 0022-0248

  110. Phase-separation behavior in a binary mixture fluid layer subjected to a vertical temperature gradient Peer-reviewed

    Y Seki, T Okabe, Y Oshida, M Kobayashi, T Tsukada, M Hozawa, M Kubo

    CHEMICAL ENGINEERING SCIENCE　59　(13)　2685-2693　2004/07

    DOI： 10.1016/j.ces.2004.04.008 　

    ISSN： 0009-2509

  111. Numerical studies of wave pattern in an oxide melt in the Czochralski crystal growth Peer-reviewed

    CJ Jing, T Tsukada, M Hozawa, K Shimamura, N Ichinose, T Shishido

    JOURNAL OF CRYSTAL GROWTH　265　(3-4)　505-517　2004/05

    DOI： 10.1016/j.jcrysgro.2004.02.078 　

    ISSN： 0022-0248

  112. Effects of temperature coefficient of surface tension on oxygen transport in a small silicon Cz furnace Peer-reviewed

    YR Li, N Imaishi, Y Akiyama, L Peng, SY Wu, T Tsukada

    JOURNAL OF CRYSTAL GROWTH　266　(1-3)　48-53　2004/05

    DOI： 10.1016/j.jcrysgro.2004.02.085 　

    ISSN： 0022-0248

  113. Electrohydrodynamic effect on phase separation morphology in polymer blend films Peer-reviewed

    T Kikuchi, M Kudo, C Jing, T Tsukada, M Hozawa

    LANGMUIR　20　(4)　1234-1238　2004/02

    DOI： 10.1021/la0302100 　

    ISSN： 0743-7463

  114. Sensitivity analyses of the thermophysical properties of silicon melt and crystal Peer-reviewed

    Mitsumasa Mito, Takao Tsukada, Mitsnori Hozawa, Chiaki Yokoyama, You-Rong Li, Nobuyuki Imaishi

    Meas.Sci.Technol.　15　1-10　2004/01

  115. Effect of internal radiative heat transfer on spoke pattern on oxide melt surface in Czochralski crystal growth Peer-reviewed

    CJ Jing, A Hayashi, M Kobayashi, T Tsukada, M Hozawa, N Imaishi, K Shimamura, N Ichinose

    JOURNAL OF CRYSTAL GROWTH　259　(4)　367-373　2003/12

    DOI： 10.1016/j.jcrysgro.2003.07.033 　

    ISSN： 0022-0248

  116. Global analysis of a small Czochralski furnace with rotating crystal and crucible Peer-reviewed

    YR Li, Y Akiyama, N Imaishi, T Tsukada

    JOURNAL OF CRYSTAL GROWTH　255　(1-2)　81-92　2003/07

    DOI： 10.1016/S0022-0248(03)01239-9 　

    ISSN： 0022-0248

  117. Full finite element analyses for leveling of a polymer/solvent film accompanying with drying shrinkage Peer-reviewed

    Takayuki Komoda, Tetsuya Yokoyama, Masaki Kobayashi, Chengjun Jing, Takao Tsukada, Mitsunori Hozawa

    Journal of Chemical Engineering of Japan　36　(6)　668-675　2003/06

    DOI： 10.1252/jcej.36.668 　

    ISSN： 0021-9592

  118. Effect of RF coil position on spoke pattern on oxide melt surface in Czochralski crystal growth Peer-reviewed

    CJ Jing, M Kobayashi, T Tsukada, M Hozawa, T Fukuda, N Imaishi, K Shimamura, N Ichinose

    JOURNAL OF CRYSTAL GROWTH　252　(4)　550-559　2003/05

    DOI： 10.1016/S0022-0248(03)00942-4 　

    ISSN： 0022-0248

  119. Effect of wetting of melt against die surface on the edge-defined film-fed growth of oxide crystals Peer-reviewed

    M Kobayashi, T Tsukada, M Hozawa

    JOURNAL OF CRYSTAL GROWTH　249　(1-2)　230-239　2003/02

    DOI： 10.1016/S0022-0248(02)02105-X 　

    ISSN： 0022-0248

  120. Effect of feed solution dilution on the extraction rate of gallium from the leaching solution of a zinc refinery residue using a liquid surfactant membrane Peer-reviewed

    M Sato, A Shono, T Tsukada, M Hozawa

    SOLVENT EXTRACTION RESEARCH AND DEVELOPMENT-JAPAN　10　37-50　2003

    ISSN： 1341-7215

  121. Effect of internal radiation on thermal stress fields in CZ oxide crystals Peer-reviewed

    M Kobayashi, T Tsukada, M Hozawa

    JOURNAL OF CRYSTAL GROWTH　241　(1-2)　241-248　2002/05

    DOI： 10.1016/S0022-0248(02)01241-1 　

    ISSN： 0022-0248

  122. Oscillatory double-diffusive convection in a porous enclosure due to opposing heat and mass fluxes on the vertical walls Peer-reviewed

    Y Masuda, M Yoneya, T Ikeshoji, S Kimura, F Alavyoon, T Tsukada, M Hozawa

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　45　(6)　1365-1369　2002/03

    DOI： 10.1016/S0017-9310(01)00237-X 　

    ISSN： 0017-9310

  123. Numerical analysis for photothermal poling process of nonlinear optical polymer film Peer-reviewed

    H Kobayashi, M Kubo, T Tsukada, M Hozawa

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　45　(4)　865-875　2002/02

    DOI： 10.1016/S0017-9310(01)00156-9 　

    ISSN： 0017-9310

  124. Effect of internal radiative heat transfer on interface inversion in Czochralski crystal growth of oxides Peer-reviewed

    M Kobayashi, T Hagino, T Tsukada, M Hozawa

    JOURNAL OF CRYSTAL GROWTH　235　(1-4)　258-270　2002/02

    DOI： 10.1016/S0022-0248(01)01786-9 　

    ISSN： 0022-0248

  125. Global simulation of a silicon Czochralski furnace Peer-reviewed

    MW Li, YR Li, N Imaishi, T Tsukada

    JOURNAL OF CRYSTAL GROWTH　234　(1)　32-46　2002/01

    DOI： 10.1016/S0022-0248(01)01634-7 　

    ISSN： 0022-0248

  126. Numerical Analysis for Manufacturing Process of Waveguides with Grating Patterns on NLO Polymer Film by Photoassisted Electrical Poling Peer-reviewed

    HIROAKI KOBAYASHI, TAKAO TSUKADA AND MITSUNORI HOZAWA

    Nonlinear Optics　28　(4)　307-327　2001/12

  127. F209 Effect of melt convection and internal radiation on thermal stress fields in CZ oxide crystals

    Kobayashi Masaki, Tsukada Takao, Hozawa Mitsunori

    Proceedings of thermal engineering conference　2001　575-576　2001

    Publisher: The Japan Society of Mechanical Engineers

    DOI： 10.1299/jsmeptec.2001.0_575 　

    More details Close

    A three-dimensional finite element analysis of thermal stress fields in oxide crystals grown by the CZ method have been carried out, where the crystal was assumed to be a linear elastic material whose mechanical properties are anisotropic. The von Mises equivalent stresses in the semitransparent crystals were calculated with the temperature distributions obtained by the global heat transfer analysis in the CZ furnace taking into account the radiative heat transfer in the crystal The effect of the absorption coefficients of the crystal on the thermal stress fields in the crystal were numerically investigated as well as the effect of the interface inversion

  128. Nonlinear oscillations of molten silicon drops in electromagnetic levitator Peer-reviewed

    Y Asakuma, T Hirata, T Tsukada, M Hozawa, K Nogi, N Imaishi

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　33　(6)　861-868　2000/12

    DOI： 10.1252/jcej.33.861 　

    ISSN： 0021-9592

  129. Measurement of thermal diffusivity of nonlinear optical polymer thin films using photoacoustic method Peer-reviewed

    H Kobayashi, K Yoshida, M Kubo, T Tsukada, M Hozawa, M Sato

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　33　(6)　918-922　2000/12

    DOI： 10.1252/jcej.33.918 　

    ISSN： 0021-9592

  130. Equilibrium shape of a molten silicon drop in an electromagnetic levitator in microgravity environment Peer-reviewed

    Y Asakuma, SH Hahn, Y Sakai, T Tsukada, M Hozawa, T Matsumoto, H Fujii, K Nogi, N Imaishi

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　31　(2)　327-329　2000/04

    ISSN： 1073-5615

  131. Development of probe for thermal conductivity measurement of food materials under heated and pressurized conditions Peer-reviewed

    M Shariaty-Niassar, M Hozawa, T Tsukada

    JOURNAL OF FOOD ENGINEERING　43　(3)　133-139　2000/02

    DOI： 10.1016/S0260-8774(99)00141-7 　

    ISSN： 0260-8774

  132. Finite element analysis of electrohydrodynamic time-dependent deformation of dielectric drop under uniform DC electric field Peer-reviewed

    T Hirata, T Kikuchi, T Tsukada, M Hozawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　33　(1)　160-167　2000/02

    DOI： 10.1252/jcej.33.160 　

    ISSN： 0021-9592

  133. Effect of internal radiative heat transfer on transition of flow modes in CZ oxide melt Peer-reviewed

    M Kobayashi, T Tsukada, M Hozawa

    JOURNAL OF CRYSTAL GROWTH　208　(1-4)　459-465　2000/01

    DOI： 10.1016/S0022-0248(99)00509-6 　

    ISSN： 0022-0248

  134. Global heat transfer analysis in Czochralski silicon furnace with radiation on curved specular surfaces Peer-reviewed

    Z Guo, SH Hahn, S Maruyama, T Tsukada

    HEAT AND MASS TRANSFER　35　(3)　185-190　1999/08

    DOI： 10.1007/s002310050312 　

    ISSN： 0042-9929

  135. Global analysis of heat transfer in Si CZ furnace with specular and diffuse surfaces Peer-reviewed

    SH Hahn, T Tsukada, M Hozawa, S Maruyama, N Imaishi, S Kitagawa

    JOURNAL OF CRYSTAL GROWTH　191　(3)　413-420　1998/07

    DOI： 10.1016/S0022-0248(98)00213-9 　

    ISSN： 0022-0248

  136. Effect of processing conditions on drop behavior in an electromagnetic levitator Peer-reviewed

    SH Hahn, Y Sakai, T Tsukada, M Hozawa, N Imaishi, S Kitagawa

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　29　(1)　223-228　1998/02

    ISSN： 1073-5615

  137. Radiative heat transfer in curved specular surfaces in Czochralski crystal growth furnace Peer-reviewed

    ZX Guo, S Maruyama, T Tsukada

    NUMERICAL HEAT TRANSFER PART A-APPLICATIONS　32　(6)　595-611　1997/11

    DOI： 10.1080/10407789708913908 　

    ISSN： 1040-7782

    eISSN： 1521-0634

  138. Numerical and experimental studies on crack formation in LiNbO3 single crystal Peer-reviewed

    T Tsukada, K Kakinoki, M Hozawa, N Imaishi, K Shimamura

    JOURNAL OF CRYSTAL GROWTH　180　(3-4)　543-550　1997/10

    DOI： 10.1016/S0022-0248(97)00242-X 　

    ISSN： 0022-0248

  139. Effect of internal radiative heat transfer on the convection in CZ oxide melt Peer-reviewed

    M Kobayashi, T Tsukada, M Hozawa

    JOURNAL OF CRYSTAL GROWTH　180　(1)　157-166　1997/09

    DOI： 10.1016/S0022-0248(97)00188-7 　

    ISSN： 0022-0248

  140. Effect of coexisting aluminum on solvent extraction of gallium from mixed aqueous solutions with 2-bromodecanoic acid Peer-reviewed

    M Sato, T Tsukada, M Hozawa, A Shono

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　30　(2)　210-214　1997/04

    DOI： 10.1252/jcej.30.210 　

    ISSN： 0021-9592

  141. Theoretical and experimental studies on the behavior of a compound drop under a uniform DC electric field Peer-reviewed

    T Tsukada, J Mayama, M Sato, M Hozawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　30　(2)　215-222　1997/04

    DOI： 10.1252/jcej.30.215 　

    ISSN： 0021-9592

  142. Numerical simulation of heat transfer in floating zone single crystal growth process with radiofrequency induction heating Peer-reviewed

    Y Masuda, T Tsukada, M Hozawa, N Imaishi, N Ohnishi

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　39　(14)　3035-3043　1996/09

    ISSN： 0017-9310

  143. Quantitative assessment for cracking in oxide bulk single crystals during Czochralski growth: Development of a computer program for thermal stress analysis Peer-reviewed

    N Miyazaki, H Uchida, T Tsukada, T Fukuda

    JOURNAL OF CRYSTAL GROWTH　162　(1-2)　83-88　1996/04

    DOI： 10.1016/0022-0248(95)00934-5 　

    ISSN： 0022-0248

  144. Experimental and theoretical studies on drying of food materials Peer-reviewed

    K Buvanasundaram, N Mukai, T Tsukada, M Hozawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　29　(1)　105-111　1996/02

    DOI： 10.1252/jcej.29.105 　

    ISSN： 0021-9592

  145. Effect of EHD convection on motion of a bubble under microgravity Peer-reviewed

    T Tsukada, Y Yamamoto, M Sato, M Hozawa

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　28　(6)　810-815　1995/12

    DOI： 10.1252/jcej.28.810 　

    ISSN： 0021-9592

  146. EFFECT OF INTERNAL RADIATION WITHIN CRYSTAL AND MELT ON CZOCHRALSKI CRYSTAL-GROWTH OF OXIDE Peer-reviewed

    T TSUKADA, K KAKINOKI, M HOZAWA, N IMAISHI

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER　38　(15)　2707-2714　1995/10

    DOI： 10.1016/0017-9310(95)00077-M 　

    ISSN： 0017-9310

  147. TRANSITION OF FLOW MODE IN A MODEL CZ MELT Peer-reviewed

    K KAKINOKI, M SUZUKI, T TSUKADA, M HOZAWA, N IMAISHI

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　27　(6)　790-794　1994/12

    DOI： 10.1252/jcej.27.790 　

    ISSN： 0021-9592

  148. EFFECT OF AN ELECTRIC-FIELD ON THE BEHAVIOR OF A DROP MOVING IN A QUIESCENT LIQUID Peer-reviewed

    T TSUKADA, Y YAMAMOTO, T KATAYAMA, M HOZAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　27　(5)　662-666　1994/10

    DOI： 10.1252/jcej.27.662 　

    ISSN： 0021-9592

  149. GLOBAL ANALYSIS OF HEAT-TRANSFER IN CZ CRYSTAL-GROWTH OF OXIDE Peer-reviewed

    T TSUKADA, M HOZAWA, N IMAISHI

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　27　(1)　25-31　1994/02

    DOI： 10.1252/jcej.27.25 　

    ISSN： 0021-9592

  150. THEORETICAL AND EXPERIMENTAL STUDIES OF CIRCULATIONS INSIDE AND OUTSIDE A DEFORMED DROP UNDER A UNIFORM ELECTRIC-FIELD Peer-reviewed

    T TSUKADA, T KATAYAMA, Y ITO, M HOZAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　26　(6)　698-703　1993/12

    DOI： 10.1252/jcej.26.698 　

    ISSN： 0021-9592

  151. 酸化物バルク単結晶CZ育成過程に生じる割れの定量的評価（第１報, 熱応力解析プログラムの開発） Peer-reviewed

    宮崎則幸, 内田仁, 塚田隆夫, 宗像健, 福田承生

    日本機械学会論文集(A編)　59　(567)　2764-2769　1993/11

    Publisher: The Japan Society of Mechanical Engineers

    DOI： 10.1299/kikaia.59.2764 　

    ISSN： 0387-5008

    More details Close

    A three-dimensional finite element computer program for thermal stress analysis was developed for the cracking of trigonal class 3 m oxide bulk single crystals such as lithium niobate (LN) and lithium tantalate (LT) during Czochralski growth. A tensor transformation technique was use to obtain the elastic constant matrix and the thermal expansion coefficient vector corresponding to an arbitrary pulling direction. The anisotropy of the elastic constants and the thermal expansion coefficients as well as their temperature dependence was considered in the program. Using this program, we analyzed thermal stress in LN bulk single crystals with three types of temperature profiles or crystal-melt interface shapes. The analyses were carried out for the pulling directions of both the a-axis [100] and the c-axis [001]. The results show that thermal stress is very sensitive to the crystal-melt interface shape, and that thermal stress is lower in the c-axis pulling than in the a-axis pulling. The relation between thermal stress and the cracking and quality of a bulk single crystal is also discussed.

  152. A THEORETICAL-STUDY OF THE TEMPERATURE-FIELD IN A PANCAKE CVD REACTOR Peer-reviewed

    T TSUKADA, M HOZAWA, N IMAISHI

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　25　(6)　692-697　1992/12

    DOI： 10.1252/jcej.25.692 　

    ISSN： 0021-9592

  153. HEAT AND MOISTURE WITH THERMODYNAMICALLY INTERACTIVE FLUXES AND VOLUMETRIC CHANGES .3. COMPUTER-SIMULATION Peer-reviewed

    T FURUTA, T TSUKADA, KI HAYAKAWA

    TRANSACTIONS OF THE ASAE　35　(5)　1553-1557　1992/09

    ISSN： 0001-2351

  154. EFFECT OF A FUNNEL-SHAPED RADIATION SHIELD ON THE CHARACTERISTICS OF A SILICON CZ FURNACE Peer-reviewed

    K HONDA, N IMAISHI, T TSUKADA, M HOZAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　25　(1)　84-89　1992/02

    DOI： 10.1252/jcej.25.84 　

    ISSN： 0021-9592

  155. NUMERICAL STUDY OF THE CZOCHRALSKI GROWTH OF OXIDE SINGLE-CRYSTAL Peer-reviewed

    N IMAISHI, T TSUKADA, M HOZAWA, Y OKANO, A HIRATA

    HEAT AND MASS TRANSFER IN MATERIALS PROCESSING　123-136　1992

  156. COMPUTERIZED MODEL FOR STRAIN-STRESS ANALYSIS OF FOOD UNDERGOING SIMULTANEOUS HEAT AND MASS-TRANSFER Peer-reviewed

    T TSUKADA, N SAKAI, K HAYAKAWA

    JOURNAL OF FOOD SCIENCE　56　(5)　1438-1445　1991/09

    DOI： 10.1111/j.1365-2621.1991.tb04792.x 　

    ISSN： 0022-1147

    eISSN： 1750-3841

  157. MARANGONI CONVECTION DURING STEAM ABSORPTION INTO AQUEOUS LIBR SOLUTION WITH SURFACTANT Peer-reviewed

    M HOZAWA, M INOUE, J SATO, T TSUKADA, N IMAISHI

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　24　(2)　209-214　1991/04

    DOI： 10.1252/jcej.24.209 　

    ISSN： 0021-9592

  158. NUMERICAL STUDY ON CZOCHRALSKI GROWTH OF OXIDE SINGLE-CRYSTALS Peer-reviewed

    Y OKANO, T FUKUDA, A HIRATA, N TAKANO, T TSUKADA, M HOZAWA, N IMAISHI

    JOURNAL OF CRYSTAL GROWTH　109　(1-4)　94-98　1991/02

    ISSN： 0022-0248

  159. EFFECT OF INTERFACE INVERSION ON THERMAL-STRESS FIELD IN CZ CRYSTAL-GROWTH OF OXIDE Peer-reviewed

    T TSUKADA, M HOZAWA, N IMAISHI

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　23　(3)　286-290　1990/06

    DOI： 10.1252/jcej.23.286 　

    ISSN： 0021-9592

  160. THEORETICAL AND EXPERIMENTAL STUDIES OF THE DEFORMATION OF BUBBLES MOVING IN QUIESCENT NEWTONIAN AND NON-NEWTONIAN LIQUIDS Peer-reviewed

    T TSUKADA, H MIKAMI, M HOZAWA, N IMAISHI

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　23　(2)　192-198　1990/04

    DOI： 10.1252/jcej.23.192 　

    ISSN： 0021-9592

  161. Effect of a radiation shield on thermal stress field during czochralski crystal growtwkiwyh of silicon Peer-reviewed

    Takao Tsukada, Mttstjnort Hozawa, Nobuyuki Imaishi

    JOURNAL of CHEMICAL ENGINEERING of JAPAN　23　(2)　186-191　1990

    DOI： 10.1252/jcej.23.186 　

    ISSN： 0021-9592

  162. EFFECT OF A RADIATION SHIELD ON MELT CRYSTAL INTERFACE SHAPE AND PULL RATE OF SILICON CZ PULLER Peer-reviewed

    T TSUKADA, N IMAISHI, M HOZAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　21　(4)　381-387　1988/08

    DOI： 10.1252/jcej.21.381 　

    ISSN： 0021-9592

  163. THEORETICAL-STUDY OF THE FLOW AND TEMPERATURE-FIELDS IN CZ SINGLE-CRYSTAL GROWTH Peer-reviewed

    T TSUKADA, N IMAISHI, M HOZAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　21　(2)　184-191　1988/04

    DOI： 10.1252/jcej.21.184 　

    ISSN： 0021-9592

  164. EFFECT OF A RADIATION SHIELD ON SILICON CZ GROWTH Peer-reviewed

    T TSUKADA, N IMAISHI, M HOZAWA, K FUJINAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　20　(2)　146-151　1987/04

    DOI： 10.1252/jcej.20.146 　

    ISSN： 0021-9592

  165. A THEORETICAL AND EXPERIMENTAL-STUDY ON THE OSCILLATION OF A HANGING DROP Peer-reviewed

    T TSUKADA, M SATO, N IMAISHI, M HOZAWA, K FUJINAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　20　(1)　88-93　1987/02

    DOI： 10.1252/jcej.20.88 　

    ISSN： 0021-9592

  166. STATIC DROP FORMATION IN AN ELECTROSTATIC-FIELD Peer-reviewed

    T TSUKADA, M SATO, N IMAISHI, M HOZAWA, K FUJINAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　19　(6)　537-542　1986/12

    DOI： 10.1252/jcej.19.537 　

    ISSN： 0021-9592

  167. AN EXPERIMENTAL AND THEORETICAL-STUDY ON COMBINED EFFECT OF FREE AND FORCED CONVECTIONS ON MASS-TRANSFER BETWEEN 2 LIQUIDS Peer-reviewed

    M HOZAWA, T TSUKADA, T KONDO, N IMAISHI, K FUJINAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　18　(4)　318-325　1985

    DOI： 10.1252/jcej.18.318 　

    ISSN： 0021-9592

  168. COMPUTER-SIMULATIONS OF DEFORMATION OF MOVING DROPS AND BUBBLES BY USE OF THE FINITE-ELEMENT METHOD Peer-reviewed

    T TSUKADA, M HOZAWA, N IMAISHI, K FUJINAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　17　(3)　246-251　1984

    DOI： 10.1252/jcej.17.246 　

    ISSN： 0021-9592

  169. STATIC DROP FORMATION ON AN INCLINED FLAT-PLATE Peer-reviewed

    T TSUKADA, M HOZAWA, N IMAISHI, K FUJINAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　15　(6)　421-426　1982

    DOI： 10.1252/jcej.15.421 　

    ISSN： 0021-9592

  170. EFFECT OF WETTABILITY ON STATIC DROP FORMATION FROM A HOLE IN HORIZONTAL FLAT-PLATE Peer-reviewed

    M HOZAWA, T TSUKADA, N IMAISHI, K FUJINAWA

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN　14　(5)　358-364　1981

    DOI： 10.1252/jcej.14.358 　

    ISSN： 0021-9592

  171. NaOH水溶液による炭酸ガス吸収時の界面攪乱 Peer-reviewed

    今石宣之, 塚田隆夫, 藤縄勝彦

    化学工学論文集　6　(4)　431-433　1980/07

Show all ︎Show first 5

Misc. 171

  1. Investigation of the mechanism of superspreading of nanofluid droplet based on measurements of nano liquid film near the contact line

    庄司衛太, 星野瑛, 齋藤大河, 琵琶哲志, 久保正樹, 塚田隆夫, 笘居高明, 阿尻雅文

    日本伝熱シンポジウム講演論文集(CD-ROM)　60th　2023

    ISSN： 1346-1532

  2. ナノフルイド液滴蒸発時の動的濡れと堆積ナノ粒子層の光学測定

    庄司衛太, 齋藤大河, 琵琶哲志, 久保正樹, 塚田隆夫, 笘居高明, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　87th　2022

  3. ナノフルイド液滴蒸発時の動的濡れと堆積ナノ粒子層の光学測定

    庄司衛太, 齋藤大河, 琵琶哲志, 久保正樹, 塚田隆夫, 笘居高明, 阿尻雅文

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　52nd　2021

  4. Neutron CT to Investigate Relationship between the Phase Separation Structures and Melt Convection during Solidification in Cu-Co Alloys

    E. Shoji, S. Isogai, R. Suzuki, M. Kubo, T. Tsukada, T. Kai, T. Shinohara, Y. Matsumoto, H. Fukuyama

    MLF Annual Report 2019　57-58　2021

  5. コンポジット薄膜のdewetting挙動に及ぼすナノ粒子の表面修飾鎖の影響

    加藤巧, 劉洋, 村井優太, 久保正樹, 庄司衛太, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　85th　2020

  6. 中性子ラジオグラフィを用いた超臨界水中の重質油流動の可視化

    庄司衛太, 菊池隆寛, 山際幸士郎, 久保正樹, 塚田隆夫, 高見誠一, 杉本勝美, 伊藤大介, 齊藤泰司

    化学工学会年会研究発表講演要旨集(CD-ROM)　85th　2020

  7. 表面修飾ナノ粒子デザインのための分散・凝集挙動に関する数値シミュレーション

    久保正樹, 塚田隆夫

    セラミックス　55　23-26　2020

  8. A study on nano-scale interfacial phenomena of surface-modified nanoparticle suspension

    Eita Shoji, Masaki Kubo, Takao Tsukada, Atsuki Komiya, Gota Kikugawa

    Proceedings of the 19th International Symposium on Advanced Fluid Information　174-175　2019/11

  9. 中性子CTによるCu-Co合金の三次元相分離構造の観察および相分離構造-融体内対流の相関

    庄司衛太, 磯谷祥世, 鈴木陸人, 久保正樹, 塚田隆夫, 甲斐哲也, 篠原武尚, 松本吉弘, TREMSIN Anton, 福山博之

    化学工学会年会研究発表講演要旨集(CD-ROM)　84th　2019

  10. 溶媒蒸発に伴う表面修飾ナノ粒子系の構造形成に及ぼす溶媒と修飾鎖の影響の数値解析

    薄根真, 高橋太郎, 久保正樹, 庄司衛太, 塚田隆夫, 小池修, 辰巳怜, 藤田昌大, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　84th　2019

  11. せん断流中における表面修飾ナノ粒子含有ナノフルイドのレオロジー特性の数値解析

    豊田慎一郎, 薄根真, 久保正樹, 庄司衛太, 塚田隆夫, 小池修, 辰巳怜, 藤田昌大, 阿尻雅文

    化学工学会大会(Web)　2019　2019

  12. 高分子ナノコンポジット薄膜表面の相分離構造に及ぼす溶媒とナノ粒子の親和性の影響

    小平修, 矢川省吾, 小林直登, 久保正樹, 庄司衛太, 塚田隆夫, 阿尻雅文

    化学工学会大会(Web)　2019　2019

  13. 高温材料プロセスのシミュレーションと熱物性

    塚田 隆夫

    シミュレーション　38　117-119　2019

  14. 中性子イメージングの高度化

    齊藤泰司, 伊藤大介, 浅野等, 村川英樹, 杉本勝美, 塚田隆夫, 庄司衛太, 久保正樹, 梅川尚嗣, 松本亮介, 網健行, 山形豊, 森田晋也, 松嶋卯月, 沼尾達弥, 原田隆郎, 酒井卓郎, 松林征仁, 兼松学, 水田敬, 玉置昌義, 辻義之, 高見誠一

    KURNS-EKR (Web)　(3)　55‐59 (WEB ONLY)　2019/01

    ISSN： 2434-1088

  15. 溶液キャスト法により作製した高分子ナノコンポジット薄膜中のナノ粒子の構造形成

    小林直登, 中村優作, 久保正樹, 庄司衛太, 塚田隆夫, 阿尻雅文

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　50th　2018

  16. 溶媒蒸発に伴う表面修飾ナノ粒子の構造形成機構の数値解析

    薄根真, 高橋太郎, 久保正樹, 庄司衛太, 塚田隆夫, 小池修, 辰巳怜, 藤田昌大, 阿尻雅文

    日本伝熱シンポジウム講演論文集(CD-ROM)　55th　2018

    ISSN： 1346-1532

  17. 高濃度ナノ粒子分散液の溶媒蒸発に伴うナノ粒子系構造形成過程の数値解析

    久保正樹, 薄根真, 高橋太郎, 庄司衛太, 塚田隆夫, 小池修, 辰巳怜, 藤田昌大, 阿尻雅文

    日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)　31st　2018

  18. 中性子ラジオグラフィを用いた充填層反応器内の重質油の流動挙動の可視化

    山際幸士郎, 庄司衛太, 久保正樹, 塚田隆夫, 高見誠一, 杉本勝美, 齊藤泰司, 伊藤大介

    化学工学会年会研究発表講演要旨集(CD-ROM)　83rd　2018

  19. 充填層型反応器内の重質油流動挙動の中性子ラジオグラフィによるin situ観察

    山際幸士郎, 磯谷祥世, 庄司衛太, 久保正樹, 塚田隆夫, 高見誠一, 杉本勝美, 齊藤泰司, 伊藤大介

    石油・石油化学討論会講演要旨　48th　2018

  20. A Study on Flow Characteristics of Suspensions of Surface-modified Nanoparticles, Using Numerical Simulations

    Shin Usune, Masaki Kubo, Eita Shoji, Atsuki Komiya, Takao Tsukada

    Proceedings of the 18th International Symposium on Advanced Fluid Information (AFI-2018)　CRF-85　2018

  21. A Study on Flow Characteristics of High Concentration Nanofluids Using a Coupled Particle-Fluid Flow Simulation

    Shin Usune, Masaki Kubo, Eita Shoji, Atsuki Komiya, Takao Tsukada

    Proceedings of the Seventeenth International Symposium on Advanced Fluid Information (AFI2017)　CRF-81　2017/11/01

  22. Analysis of Transport Phenomena at Methane Hydrate Particle-Fluid Interface with a Multiple Dissociation Model

    Hiroyuki Komatsu, Yutaro Ono, Masaki Ota, Takao Tsukada, Richard, L. Smith Jr, Yuki Kanda, Junnosuke Okajima, Atsuki Komiya, Shigenao Maruyama

    Proceedings of the 9th International Conference on Gas Hydrates　2017/06/25

    More details Close

    A multiple dissociation model is proposed that considers transport phenomenon in the interface of MH at practical dissociation conditions. Two methane dissociative reaction are assumed as follows: (i) dissociation reaction of methane molecules without destroying the host cage of MH as a concentration driving force difference between MH and bulk phase, and (ii) decomposition reaction of the host cage of MH as a chemical potential driving force difference between hydrate and liquid phase. These reactions depend on dissociation conditions.

  23. ナノコンポジット薄膜のクラック形態,高分子分子量及び薄膜構造の相関

    小林直登, 中村優作, 久保正樹, 庄司衛太, 塚田隆夫, 阿尻雅文

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　49th　2017

  24. 溶媒蒸発に伴う表面修飾ナノ粒子の構造形成に関する数値シミュレーション

    高橋太郎, 薄根真, 久保正樹, 庄司衛太, 塚田隆夫, 小池修, 辰巳怜, 藤田昌大, 阿尻雅文

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　49th　2017

  25. Compositionally Uniform SiGe Crystal Growth aboard the International Space Station (1) Hicari project summary

    Yasutomo Arai, Kyoichi Kinoshita, Yuko Inatomi, Takao Tsukada

    INTERNATIONAL JOURNAL OF MICROGRAVITY SCIENCE AND APPLICATION　34　(1)　2017

    DOI： 10.15011//jasma.34.340112 　

    ISSN： 0915-3616

    eISSN： 2188-9783

  26. Compositionally Uniform SiGe Crystal Growth aboard the International Space Station (2) Growth Experiments by the TLZ Method and Microgravity Effects

    Kyoichi Kinoshita, Yasutomo Arai, Yuko Inatomi, Takao Tsukada

    INTERNATIONAL JOURNAL OF MICROGRAVITY SCIENCE AND APPLICATION　34　(1)　2017

    DOI： 10.15011//jasma.34.340113 　

    ISSN： 0915-3616

    eISSN： 2188-9783

  27. 国際宇宙ステーションを利用した均一組成SiGe結晶の育成(1) Hicariプロジェクト総括

    荒井康智, 木下恭一, 稲富裕光, 塚田隆夫

    Int. J. Microgravity Sci. Appl.　34　340112　2017

  28. 国際宇宙ステーションを利用した均一組成SiGe結晶の育成(2) Traveling Liquidus Zone (TLZ)法による育成実験と微小重力効果

    木下恭一, 荒井康智, 稲富裕光, 塚田隆夫

    Int. J. Microgravity Sci. Appl.　34　340113　2017

  29. 高分子コンポジット薄膜の熱dewetting挙動に及ぼす薄膜表面ナノ粒子凝集構造の影響

    加藤巧, 劉洋, 久保正樹, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　81st　2016

  30. 数値シミュレーションによるナノフルイドの設計及びそのレオロジー特性評価

    久保正樹, 薄根真, 塚田隆夫, 小池修, 藤田昌大, 阿尻雅文

    日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)　29th　2016

  31. 熱アニーリングによる高分子ナノコンポジット薄膜の構造変化に及ぼす分子量の影響

    村井優太, 劉洋, 久保正樹, 庄司衛太, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会大会(Web)　2016　2016

  32. 有機修飾ナノ粒子を含むナノ流体の分散・凝集挙動ならびにレオロジー特性の数値シミュレーション

    薄根真, 久保正樹, 塚田隆夫, 杉岡健一, 小池修, 藤田昌大, 阿尻雅文

    日本伝熱シンポジウム講演論文集(CD-ROM)　53rd　2016

    ISSN： 1346-1532

  33. 高分子ナノコンポジット薄膜内の有機修飾ナノ粒子の空間構造に及ぼすthermal annealingの影響

    LIU Yang, 加藤巧, 村井優太, 久保正樹, 塚田隆夫, 高見誠一, 阿尻雅文

    日本伝熱シンポジウム講演論文集(CD-ROM)　53rd　2016

    ISSN： 1346-1532

  34. 中性子イメージングの高度化と応用

    齊藤泰司, 伊藤大介, 竹中信幸, 浅野等, 塚田隆夫, 梅川尚嗣, 松本亮介, 山形豊, 松嶋卯月, 沼尾達弥, 香河英史, 飯倉寛, 兼松学, 水田敬, 瓜谷章, 辻義之

    KURRI-EKR (Web)　(1)　2016

    ISSN： 2189-7107

  35. Interfacial tension measurements by oscillating drop method for molten steel and oxides interface

    Watanabe Masahito, Onodera Kenta, Tanaka Kenta, Taguchi Seijiro, Serizawa Rui, Hakamada Shinya, Nakamura Airi, Goto Hiroiki, Tanaka Toshihiro, Nakamoto Masashi, Ueno Shoya, Tsukada Takao, Ishikawa Takehiko, Tamaru Haruka

    (30)　2016/01

    Publisher: Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)

  36. Interfacial Phenomena and Thermophysical Properties of Molten Steel and Oxides – Fundamental Research of Steel Processing using Electrostatic Levitation Furnace (ELF)

    Masahito WATANABE, Kenta ONODERA, Kenta TANAKA, Seijiro TAGUCHI, Rui SERIZAWA, Shinya HAKAMADA, Airi NAKAMURA, Akitoshi MIZUNO, Shoya UENO, Takao TSUKADA, Hiroki GOTOH, Toshihiro TANAKA, Haruka TAMARU, Takehiko ISHIKAWA

    Int. J. Microgravity Sci. Appl.　33　(2)　330212　2016

  37. ナノ粒子/高分子コンポジット薄膜のthermal dewetting挙動に及ぼすナノ粒子空間構造の影響

    加藤巧, LIU Yang, 久保正樹, 杉岡健一, 塚田隆夫, 高見誠一, 阿尻雅文

    日本伝熱シンポジウム講演論文集(CD-ROM)　52nd　2015

    ISSN： 1346-1532

  38. ナノ粒子/高分子コンポジット薄膜のクラック形成に及ぼす溶媒蒸発条件の影響

    小林直登, 坂井慎次, 久保正樹, 杉岡健一, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　47th　2015

  39. 高分子コンポジット薄膜中のナノ粒子分散・凝集構造と薄膜の熱dewetting挙動との相関

    久保正樹, 加藤巧, 劉洋, 杉岡健一, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　80th　2015

  40. せん断流中における表面修飾無機ナノ粒子の分散・凝集挙動の数値シミュレーション

    薄根真, 久保正樹, 杉岡健一, 塚田隆夫, 小池修, 藤田昌大, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　80th　2015

  41. <研究報告>コア・シェル型液滴の界面自由エネルギー

    渡邉 匡人, 小野寺 健太, 水野 章敏, 塚田 隆夫, 上野 翔也

    学習院大学計算機センター年報　36　24-34　2015/01/01

    ISSN： 0913-4514

  42. ISSにおけるTLZ法によるSiGe結晶成長時の偏析現象の数値シミュレーション

    馬場嵯登史, 阿部敬太, 住岡沙羅, 久保正樹, 塚田隆夫, 木下恭一, 荒井康智, 稲富裕光

    結晶成長国内会議予稿集(CD-ROM)　45th　2015

    ISSN： 0385-6275

  43. 微小重力下でTLZ法により育成したSiGe結晶分析

    荒井康智, 木下恭一, 阿部敬太, 住岡沙羅, 久保正樹, 塚田隆夫, 馬場嵯登史, 稲富裕光

    結晶成長国内会議予稿集(CD-ROM)　45th　2015

    ISSN： 0385-6275

  44. Growth of Homogeneous SiGe Crystals by the TLZ Method in Microgravity

    Kinoshita Kyoichi, Arai Yasutomo, Inatomi Yuko, Tsukada Takao, Miyata Hiroaki, Tanaka Ryota, Abe Keita, Sumioka Sara

    (29)　42-43　2015/01

    Publisher: Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)

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    Space Utilization Research (January 24-25, 2015. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan

  45. Activity Report of Research Group on Bulk Crystal Growth

    Hayakawa Yasuhiro, Inatomi Yuko, Okano Yasunori, Arafune Kouji, Arivanandhan Mukannan, Ozawa Tetsuo, Kinosita Kyouichi, Arai Yasukoto, Tsukada Takao, Kubo Masaki, Sugioka Kenich

    (29)　48-52　2015/01

    Publisher: Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)

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    Space Utilization Research (January 24-25, 2015. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan

  46. Interfacial tension measurements by oscillating drop method for molten steel and oxides interface

    Watanabe Masahito, Onodera Kenta, Mizuno Akitoshi, Tanaka Toshihiro, Nakamoto Masashi, Ueno Shoya, Tsukada Takao, Ishikawa Takehiko, Tamaru Haruka

    (29)　129-132　2015/01

    Publisher: Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)

  47. ISS静電浮遊炉を用いた高温融体界面現象の研究 －酸化物・鉄鋼融体の界面張力測定－

    渡邉匡人, 田中敏宏, 塚田隆夫, 石川毅彦, 田丸晴香, 水野章敏

    Int. J. Microgravity Sci. Appl.　32　320102　2015

  48. 中性子ラジオグラフィーを用いた流通式反応装置内での超臨界水と室温水の混合場の観察

    高見 誠一, 塚田 隆夫, 竹中 信幸

    化学工学　79　614-617　2015

  49. 流通式超臨界水熱合成反応器内の熱流動場と生成ナノ粒子の粒径分布との相関

    杉岡健一, 小澤恭兵, 高見誠一, 久保正樹, 塚田隆夫, 阿尻雅文, 杉本勝美, 竹中信幸

    日本伝熱シンポジウム講演論文集(CD-ROM)　51st　2014

    ISSN： 1346-1532

  50. 有機修飾無機ナノ粒子の分散・凝集挙動に関する数値計算

    久保正樹, 安藤宗弘, 杉岡健一, 塚田隆夫, 小池修, 藤田昌大, 高見誠一, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　79th　2014

  51. 流通式超臨界水熱合成反応器内の熱流動場と生成ナノ粒子の粒径分布との相関

    杉岡健一, 小澤恭兵, 高見誠一, 久保正樹, 塚田隆夫, 阿尻雅文, 竹中信幸

    化学工学会年会研究発表講演要旨集(CD-ROM)　79th　2014

  52. 熱アニーリングによる高分子ナノコンポジット薄膜内2次元配列ナノ粒子の一方向移動

    劉洋, 加藤巧, 久保正樹, 杉岡健一, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　46th　2014

  53. 有機溶媒中における表面修飾無機ナノ粒子の分散・凝集挙動の数値シミュレーション

    安藤宗弘, 久保正樹, 杉岡健一, 塚田隆夫, 小池修, 藤田昌大, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　79th　2014

  54. 超臨界水熱法によるナノ粒子合成プロセスにおける熱流動場の可視化と解析-中性子ラジオグラフィと数値シミュレーションを利用して-

    塚田隆夫, 高見誠一, 杉岡健一, 久保正樹, 阿尻雅文, 杉本勝美, 竹中信幸, 齊藤泰司

    結晶成長国内会議予稿集(CD-ROM)　44th　2014

    ISSN： 2188-7268

  55. 微小重力下でのTLZ法によるSiGe結晶成長プロセスの数値解析並びに結晶内組成均一化条件の提案

    阿部敬太, 住岡沙羅, 杉岡健一, 久保正樹, 塚田隆夫, 木下恭一, 荒井康智, 稲富裕光

    日本伝熱シンポジウム講演論文集(CD-ROM)　51st　2014

    ISSN： 1346-1532

  56. 微小重力下でTLZ法により成長したSiGe結晶の詳細な軸方向・径方向組成分布計測

    荒井康智, 木下恭一, 稲富裕光, 塚田隆夫, 阿部敬太, 住岡沙羅

    結晶成長国内会議予稿集(CD-ROM)　44th　2014

    ISSN： 0385-6275

  57. 微小重力下でTLZ法により成長したSiGe結晶の軸方向・径方向組成分布の数値シミュレーション

    住岡沙羅, 阿部敬太, 杉岡健一, 久保正樹, 塚田隆夫, 木下恭一, 荒井泰智, 稲富裕光

    結晶成長国内会議予稿集(CD-ROM)　44th　2014

    ISSN： 0385-6275

  58. TLZ法による微小重力下SiGe結晶成長実験

    木下恭一, 荒井康智, 稲富裕光, 塚田隆夫, 宮田浩旭, 田中涼太, 阿部敬太, 住岡沙羅

    結晶成長国内会議予稿集(CD-ROM)　44th　2014

    ISSN： 0385-6275

  59. 微小重力環境下におけるTLZ法による均一組成SiGe結晶成長条件の数値解析的検討

    住岡沙羅, 阿部敬太, 杉岡健一, 久保正樹, 塚田隆夫, 木下恭一, 荒井康智, 稲富裕光

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　46th　2014

  60. ナノ粒子合成のための超臨界水・常温水混合状態の中性子ラジオグラフィによる可視化

    竹中信幸, 高見誠一, 塚田隆夫

    Isotope News　(721)　2014

  61. 流通式ナノ粒子合成装置における管内流動状態の中性子線ラジオグラフィー観察

    高見誠一, 小澤恭兵, 杉岡健一, 塚田隆夫, 阿尻雅文, 杉本勝美, 竹中信幸, 齊藤泰司

    セラミックス基礎科学討論会講演要旨集　51st　2013

  62. ナノ粒子/高分子コンポジット薄膜内のナノ粒子空間構造に及ぼす諸因子の影響

    LIU Yang, 藤井岳史, 久保正樹, 杉岡健一, 塚田隆夫, 高見誠一, 阿尻雅文

    日本伝熱シンポジウム講演論文集(CD-ROM)　50th　2013

    ISSN： 1346-1532

  63. ナノ粒子/高分子コンポジット薄膜の溶媒蒸発現象およびこれに伴う構造形成過程

    坂井慎次, 佐々木優大, 久保正樹, 杉岡健一, 塚田隆夫, 高見誠一, 阿尻雅文

    日本伝熱シンポジウム講演論文集(CD-ROM)　50th　2013

    ISSN： 1346-1532

  64. 高分子ナノコンポジット薄膜内のナノ粒子空間構造に及ぼす諸因子の影響

    劉洋, 藤井岳史, 久保正樹, 杉岡健一, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　45th　2013

  65. ナノ粒子/高分子コンポジット薄膜のdewettingに及ぼす諸因子の影響

    藤井岳史, 劉洋, 久保正樹, 杉岡健一, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　45th　2013

  66. 溶液キャスト法を用いたナノ粒子/高分子コンポジット薄膜の形成プロセスの解明

    坂井慎次, 佐々木優大, 久保正樹, 杉岡健一, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会大会講演要旨集(CD-ROM)　2013　2013

  67. 超臨界水熱合成反応器内の流動,水密度及び温度分布の数値シミュレーション

    小澤恭兵, 杉岡健一, 高見誠一, 塚田隆夫, 阿尻雅文, 杉本勝美, 竹中信幸, 齊藤泰司

    化学工学会年会研究発表講演要旨集(CD-ROM)　78th　2013

  68. 中性子ラジオグラフィによる超臨界水熱合成反応器内の混合状態に及ぼす反応器幾何学形状の影響の検討

    小澤恭兵, 杉岡健一, 高見誠一, 塚田隆夫, 阿尻雅文, 杉本勝美, 竹中信幸, 齊藤泰司

    日本伝熱シンポジウム講演論文集(CD-ROM)　50th　2013

    ISSN： 1346-1532

  69. 中性子線CTを用いた流通式超臨界水熱合成装置内での混合状態のin situ観察

    高見誠一, 小澤恭兵, 杉岡健一, 塚田隆夫, 阿尻雅文, 杉本勝美, 竹中信幸, 齊藤泰司

    化学工学会年会研究発表講演要旨集(CD-ROM)　78th　2013

  70. ナノ粒子/ポリマー複合薄膜の溶媒蒸発現象および構造形成過程

    佐々木優大, 坂井慎次, 杉岡健一, 久保正樹, 塚田隆夫, 高見誠一, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　78th　2013

  71. 微小重力下におけるTLZ法によるSiGe単結晶成長プロセスの数値シミュレーション

    阿部敬太, 住岡沙羅, 杉岡健一, 久保正樹, 塚田隆夫, 木下恭一, 荒井康智, 稲富裕光

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　45th　2013

  72. TLZ法による微小重力下SiGe結晶成長実験(その4-数値解析による考察)

    住岡沙羅, 阿部敬太, 杉岡健一, 久保正樹, 塚田隆夫, 木下恭一, 荒井康智, 稲富裕光

    結晶成長国内会議予稿集(CD-ROM)　43rd　2013

    ISSN： 0385-6275

  73. TLZ法による微小重力下SiGe結晶成長実験(その2-実験結果考察)

    木下恭一, 荒井康智, 稲富裕光, 塚田隆夫, 阿部敬太, 住岡沙羅

    結晶成長国内会議予稿集(CD-ROM)　43rd　2013

    ISSN： 0385-6275

  74. TLZ法による微小重力下SiGe結晶成長実験(その3-TLZ法の数値解析)

    阿部敬太, 住岡沙羅, 杉岡健一, 久保正樹, 塚田隆夫, 木下恭一, 荒井康智, 稲富裕光

    結晶成長国内会議予稿集(CD-ROM)　43rd　2013

    ISSN： 0385-6275

  75. TLZ法による微小重力下SiGe結晶成長実験(その1-実験概要)

    木下恭一, 荒井康智, 稲富裕光, 塚田隆夫, 宮田浩旭, 田中涼太

    結晶成長国内会議予稿集(CD-ROM)　43rd　2013

    ISSN： 0385-6275

  76. 無機ナノ粒子/高分子コンポジット薄膜のdewetting現象と粒子空間分布との相関

    高橋洋祐, 久保正樹, 杉岡健一, 塚田隆夫, 南公隆, 阿尻雅文

    化学工学会年会研究発表講演要旨集(CD-ROM)　77th　2012

  77. 中性子線ラジオグラフィーを用いた流通式超臨界水熱合成装置における混合部近傍の可視化

    高見誠一, 足立潤, 杉岡健一, 塚田隆夫, 阿尻雅文, 杉本勝美, 竹中信幸, 齊藤泰司

    化学工学会年会研究発表講演要旨集(CD-ROM)　77th　2012

  78. 中性子ラジオグラフィ及び数値シミュレーションによる超臨界水熱合成反応器内の混合状態の可視化

    杉岡健一, 高見誠一, 足立潤, 塚田隆夫, 阿尻雅文, 杉本勝美, 竹中信幸, 齊藤泰司

    日本伝熱シンポジウム講演論文集(CD-ROM)　49th　2012

    ISSN： 1346-1532

  79. 超臨界水を利用した超重質油分解プロセスのフィージビリティースタディー

    阿尻雅文, 猪股宏, 塚田隆夫, 山本悟, 木下睦, 渡辺賢

    石油エネルギー技術センター技術開発・調査事業成果発表会要旨集(CD-ROM)　2012　2012

  80. SiGe結晶宇宙実験条件の精密化

    木下恭一, 荒井康智, 稲富裕光, 宮田浩旭, 田中涼太, 塚田隆夫, 高柳昌弘, 依田眞一

    宇宙利用シンポジウム　28th　2012

  81. TLZ法によって育成したSiGe単結晶の組成均一性評価

    冨岡浩, 木下恭一, 荒井康智, 稲富裕光, 塚田隆夫, 宮田浩旭, 田中涼太, 田口恵祐, 高柳昌弘

    結晶成長国内会議予稿集(CD-ROM)　42nd　2012

    ISSN： 0385-6275

  82. 微小重力下におけるTLZ法による均一組成SiGe結晶の育成

    木下恭一, 荒井康智, 稲富裕光, 塚田隆夫

    日本結晶成長学会誌　39　(1)　17-22　2012

    Publisher: 日本結晶成長学会

    DOI： 10.19009/jjacg.39.1_17 　

    ISSN： 0385-6275

  83. WG活動報告 微小重力下での酸素分圧制御による金属性融体の表面張力測定—WG activity report: Measurement of Oxygen Partial Pressure Dependence of Surface Tension for High Temperature

    渡邉, 匡人, 小澤, 俊平, 水野, 章敏, 日比谷, 孟俊, 田川, 俊夫, 塚田, 隆夫, 杉岡, 健一, 福山, 博之, 小畠, 秀和, 田中, 敏宏, 吉川, 健, 安田, 秀幸, 景山, 大郎, 石川, 毅彦, Watanabe, Masahito, Ozawa, Shunpei, Mizuno, Akitoshi, Hibiya, Taketoshi, Tagawa, Toshio, Tsukada, Takao, Sugioka, Kenichi, Fukuyama, Hiroyuki, Kobatake, Hidekazu, Tanaka, Toshihiro, Yoshikawa, Ken, Yasuda, Hideyuki, Kageyama, Dairo, Ishikawa, Takehiko

    宇宙利用シンポジウム: 第27回: 平成22年度 = Space Utilization Research, Vol. 27 2011: Proceedings of The Twenty-seventh Space Utilization Symposium　27　62-65　2011/03

    Publisher: 宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)

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    第27回宇宙利用シンポジウム (2011年1月24日-25日, 宇宙航空研究開発機構宇宙科学研究所相模原キャンパス), 相模原市, 神奈川県 The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan Microgravity conditions have advantages of measurement of surface tension and viscosity of metallic liquids by the oscillating drop method with an electromagnetic levitation (EML) device. Recently, it has been identified that dependence of surface tension on oxygen partial pressure (Po2) must be considered for industrial application of surface tension values. Effect of Po2 on surface tension would apparently change viscosity. Therefore, surface tension and viscosity must be measured simultaneously in the same atmospheric conditions. Moreover, effect of the electromagnetic force (EMF) on the surface oscillations must be clarified to obtain the ideal surface oscillation because the EMF works as the external damping force to the oscillating liquid droplets, so extensive EMF makes apparently the viscosity values large. In our working group (WG), using the parabolic flight levitation experimental facilities (PFLEX) the effects of Po2 and external EMF on surface oscillation of levitated liquid droplets are systematically investigated for the precise measurements of surface tension and viscosity of high temperature liquids. In this year we performed the observation of surface oscillations of levitated liquid Si-Ge alloys using PFLEX on board flight experiments by G-II operated by DAS. The density of liquid Si-Ge was measured by using electromagnetic levitation with a static magnetic field. In these experiments, we obtained the density, the viscosity and the surface tension values. From these measurements, we discussed surface segregation in systems forming intermetallic compounds. The composition dependence of surface tension was expressed by a modified ideal solution model. On the basis of activity of our working group and European WG, we have been preparing the research of thermophysical properties measurement of high-temperature liquids under microgravity conditions in ISS from 2011-2012. 著者人数: 18人 形態: カラー図版あり Number of authors: 18 Physical characteristics: Original contains color illustrations 資料番号: AA0065129024

  84. Heat transfer the molten Cu-based alloys accompanied by phase separation

    塚田隆夫, 馬場雄也, 杉岡健一, 杉江一寿, 小畠秀和, 福山博之

    物質・デバイス領域共同研究拠点 研究成果報告書（平成22年度）　164-165　2011/03

  85. 中性子ラジオグラフィによる超臨界水熱合成反応器内の流動・混合状態のその場観察

    高見誠一, 杉岡健一, 塚田隆夫, 阿尻雅文, 杉本勝美, 竹中信幸, 齊藤泰司

    日本伝熱シンポジウム講演論文集(CD-ROM)　48th　2011

    ISSN： 1346-1532

  86. 超臨界水を利用した超重質油分解プロセスのフィージビリティースタディー

    阿尻雅文, 猪股宏, 塚田隆夫, 山本悟, 木下睦, 渡邊賢

    石油産業活性化センター技術開発・調査事業成果発表会要旨集(技術開発事業関連)(CD-ROM)　2011　2011

  87. 中性子線を用いた流通式超臨界水熱合成装置における管内混合・流動状態のその場観察

    高見誠一, 杉岡健一, 塚田隆夫, 阿尻雅文, 杉本勝美, 竹中信幸, 齊藤泰司

    化学工学会秋季大会研究発表講演要旨集(CD-ROM)　43rd　2011

  88. 中性子ラジオグラフィによる超臨界水・亜臨界水混合状態の可視化

    竹中信幸, 杉本勝美, 高見誠一, 杉岡健一, 塚田隆夫, 阿尻雅文, 齊藤泰司

    日本混相流学会年会講演会講演論文集　2011　2011

  89. 金属融体の周期加熱カロリメトリー － 溶融Feを例として

    福山博之, 杉江一寿, 小畠秀和, 塚田隆夫

    金属　81　461-467　2011

  90. 電磁浮遊技術を利用した高温融体の熱物性測定を支援する統合プラットフォーム

    塚田隆夫

    金属　81　(6)　481-485　2011

    Publisher: アグネ技術センター

    ISSN： 0368-6337

  91. EFFECT OF STATIC MAGNETIC FIELD ON THERMAL CONDUCTIVITY MEASUREMENT OF A MOLTEN METAL DROPLET BY AN EML TECHNIQUE

    BABA Yuya, SUGIOKA Ken-ichi, TSUKADA Takao, SUGIE Kazutoshi, KOBATAKE Hidekazu, FUKUYAMA Hiroyuki

    31　85-87　2010/11/17

    ISSN： 0911-1743

  92. THERMOPHYSICAL PROPERTY MEASUREMENT FOR HIGH PURITY LIQUID IRON USING NONCONTACT LASER MODULATION CALORIMETRY

    SUGIE Kazutoshi, KOBATAKE Hidekazu, FUKUYAMA Hiroyuki, UCHIKOSHI Masahito, ISSHIKI Minoru, SUGIOKA Ken-ichi, TSUKADA Takao

    31　170-172　2010/11/17

    ISSN： 0911-1743

  93. Density, Viscosity, and Thermal Conductivity of [HMIM][BF4] and [OMIM][BF4] at High Pressure

    Daisuke Tomida, Satoshi Kenmochi, Takao, Tsukada, Kun Qiao, Quanxi Bao, Chiaki Yokoyama

    Proceedings of the 9th Asian Thermophysical Properties Conference Paper Number: 109145　2010/10/19

  94. WG活動報告: 微小重力下での酸素分圧制御による金属性融体の表面張力測定—WG activity report: Measurement of Oxygen Partial Pressure Dependence of Surface Tension for High Temperature

    渡邉, 匡人, 小澤, 俊平, 水野, 章敏, 日比谷, 孟俊, 田川, 俊夫, 塚田, 隆夫, 杉岡, 健一, 福山, 博之, 小畠, 秀和, 田中, 敏宏, 吉川, 健, 安田, 秀幸, 景山, 大郎, 石川, 毅彦, Watanabe, Masahito, Ozawa, Shunpei, Mizuno, Akitoshi, Hibiya, Taketoshi, Tagawa, Toshio, Tsukada, Takao, Sugioka, Kenichi, Fukuyama, Hiroyuki, Kobatake, Hidekazu, Tanaka, Toshihiro, Yoshikawa, Ken, Yasuda, Hideyuki, Kageyama, Dairo, Ishikawa, Takehiko, Fecht, H. J., Wunderlich, R., Ricci, E., Arato, E.

    宇宙利用シンポジウム = Space Utilization Research: Proceedings of Space Utilization Symposium　26　2010/02

    Publisher: 宇宙航空研究開発機構宇宙科学研究本部

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    第26回宇宙利用シンポジウム(2010年1月25日-26日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス) The Twenty-sixth Space Utilization Symposium (January 25-26, 2010: ISAS/JAXA Sagamihara, Japan) Microgravity conditions have advantages of measurement of surface tension and viscosity of metallic liquids by the oscillating drop method with an electromagnetic levitation (EML) device. Recently, it has been identified that dependence of surface tension on oxygen partial pressure (Psub o2) must be considered for industrial application of surface tension values. Effect of Po2 on surface tension would apparently change viscosity. Therefore, surface tension and viscosity must be measured simultaneously in the same atmospheric conditions. Moreover, effect of the electromagnetic force (EMF) on the surface oscillations must be clarified to obtain the ideal surface oscillation because the EMF works as the external damping force to the oscillating liquid droplets, so extensive EMF makes apparently the viscosity values large. In our working group (WG), using the parabolic flight levitation experimental facilities (PFLEX) the effects of Po2 and external EMF on surface oscillation of levitated liquid droplets are systematically investigated for the precise measurements of surface tension and viscosity of high temperature liquids. In this year we performed the observation of surface oscillations of levitated liquid Si-Cu alloys using PFLEX on board flight experiments by G-II operated by DAS. These observations were performed under the controlled Po2 conditions. In these experiments, we obtained the density, the viscosity and the surface tension values. From these measurements, we discussed surface segregation in systems forming intermetallic compounds. We found the effect of clusters in both density and surface tension experimental data. The composition dependence of surface tension was expressed by a modified ideal solution model. On the basis of activity of our working group and European WG, we proposed the research of thermophysical properties measurement of high-temperature liquids under microgravity conditions to ESA/JAXA-AO as ISS utilization program. 形態: カラー図版あり 共催: 日本学術会議 著者人数: 18人 Physical characteristics: Original contains color illustrations joint hosting: The Science Council of Japan 資料番号: AA0064730036

  95. 超臨界水を利用した超重質油分解プロセスのフィージビリティースタディー

    阿尻雅文, 猪股宏, 塚田隆夫, 山本悟, 渡邉賢, 木下睦

    石油産業活性化センター技術開発・調査事業成果発表会要旨集(技術開発事業関連)(CD-ROM)　24th　2010

  96. Investigation of convection in an electromagnetically levitated molten droplet under a static magnetic field

    Ken-ichi Sugioka, Takao Tsukada, Hiroyuki Fukuyama, Hidekazu Kobatake

    Proceedings of International Workshop on Process Intensification 2010　2010

  97. In-Situ Observation of Mixing Behavior in a Flow-Type Reactor for supercritical Hydrothermal synthesis Using Neutron Radiography

    T.Tsukada, K.Sugioka, S.Takami, T.Adschiri, K.Sugimoto, N.Takenaka, Y.Saito, Y.Kawabata

    KURRI Progress Report　114-114　2010

  98. レーザー周期加熱カロリメトリ―法による高温融体の熱物性計測

    福山博之, 小畠秀和, 杉岡健一, 塚田隆夫

    日本結晶成長学会誌　37　135-139　2010

    DOI： 10.19009/jjacg.37.2_135 　

  99. 高温熱物性計測に対する数値シミュレーションの援用

    杉岡健一, 塚田隆夫, 小畠秀和, 福山博之

    日本結晶成長学会誌　37　(2)　140-144　2010

    Publisher: The Japanese Association for Crystal Growth (JACG)

    DOI： 10.19009/jjacg.37.2_140 　

    ISSN： 0385-6275

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    Recently, a novel method of measuring the thermophysical properties, particularly thermal conductivity, of high-temperature molten materials using the electromagnetic levitation technique has been developed, where this method is based on a noncontact laser AC calorimetry, and entails the superimposing of a static magnetic field to suppress convection in an electromagnetically levitated droplet. Here, the numerical simulation studies are introduced, in which the effect of a static magnetic field on melt convection in the droplet and the measured thermal conductivity have been investigated numerically, in order to determine the optimum conditions for measurement and to estimate the accuracy of the measured value.

  100. 化学工学年鑑2010「4.3 相変化制御」

    塚田隆夫

    化学工学　74　544-545　2010

  101. 静磁場印加電磁浮遊法を用いたレーザー周期加熱カロリメトリ―法による高温融体の熱物性計測

    福山博之, 小畠秀和, 杉江一寿, 馬場雄也, 杉岡健一, 塚田隆夫

    日本マイクログラビティ応用学会誌　27　(4)　210-214　2010

    Publisher: 日本マイクログラビティ応用学会

    ISSN： 0915-3616

  102. Thermophysical Property Measurement of Reactive High-Temperature Melts Using Electromagnetic Levitation with Gas-jet in Static Magnetic Field

    福山博之, 小畠秀和, 塚田隆夫, 淡路 智

    東北大学金属材料研究所 強磁場超伝導材料研究センター 平成20年度年次報告書　146-149　2009/06

  103. WG活動報告: 微小重力下での酸素分圧制御による金属性融体の表面張力測定—WG activity report: Measurement of oxygen partial pressure dependence of surface tension for high temperature

    渡邉, 匡人, 小澤, 俊平, 水野, 章敏, 日比谷, 孟俊, 田川, 俊夫, 樋口, 健介, 塚田, 隆夫, 福山, 博之, 小畠, 秀和, 田中, 敏宏, 安田, 秀幸, 景山, 大郎, 石川, 毅彦, Watanabe, Masahito, Ozawa, Shunpei, Mizuno, Akitoshi, Hibiya, Taketoshi, Tagawa, Toshio, Higuchi, Kensuke, Tsukada, Takao, Fukuyama, Hiroyuki, Kobatake, Hidekazu, Tanaka, Toshihiro, Yasuda, Hideyuki, Kageyama, Diro, Ishikawa, Takehiko, Fecht, Hans-Jurgen, Wunderlich, Rainer, Ricci, Enrica, Arato, ElizabettaDipartimento di Ingegneria Ambientale Universita di Genova

    宇宙利用シンポジウム = Space Utilization Research: Proceedings of Space Utilization Symposium　25　2009/03

    Publisher: 宇宙航空研究開発機構宇宙科学研究本部

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    第25回宇宙利用シンポジウム(2009年1月14日-15日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス) The Twenty-fifth Space Utilization Symposium (January 14-15, 2009: ISAS/JAXA Sagamihara, Japan) Microgravity conditions have advantages of measurement of surface tension and viscosity of metallic liquids by the oscillating drop method with an electromagnetic levitation (EML) device. Recently, it has been identified that dependence of surface tension on oxygen partial pressure (Po(sub 2)) must be considered for industrial application of surface tension values. Effect of Po(sub 2) on surface tension would apparently change viscosity. Therefore, surface tension and viscosity must be measured simultaneously in the same atmospheric conditions. Moreover, effect of the electromagnetic force (EMF) on the surface oscillations must be clarified to obtain the ideal surface oscillation because the EMF works as the external damping force to the oscillating liquid droplets, so extensive EMF makes apparently the viscosity values large. In our working group (WG), using the parabolic flight levitation experimental facilities (PFLEX) the effects of Po(sub 2) and external EMF on surface oscillation of levitated liquid droplets are systematically investigated for the precise measurements of surface tension and viscosity of high temperature liquids. In this year we performed the observation of surface oscillations of levitated liquid Cu and Ag using PFLEX on board flight experiments by G-II operated by DAS. These observations were performed under the controlled Po(sub 2) conditions. In these experiments, we obtained the density, the viscosity and the surface tension values as same as reported data, and also obtained the difference of surface oscillations with the change of the Po(sub 2). On the basis of present experimental results, we discussed with European WG member in ESA-ESTEC at this December about the effect of Po(sub 2) on the surface of high-temperature liquids. We agreed to make a proposal of measurement of thermophysical prosperities of high-temperature liquid in controlled Po(sub 2) conditions for next ESA/JAXA-AO. 形態: カラー図版あり 資料番号: AA0064297083

  104. Noncontact Measurements of Heat Capacity, Thermal Conductivity and Emissivity of High Temperature Melts by Modulated Laser Calorimetry

    H.Fukuyama, H.Kobatake, T.Tsukada, S. Awaji

    Journal of Technical Association of Refractories　28　(4)　2008/12

  105. ACCURATE MEASUREMENT OF HEAT CAPACITY AND THERMAL CONDUCTIVITY OF LIQUID SILICON USING NONCONTACT MODULATED LASER CALORIMETRY

    KOBATAKE Hidekazu, SUGIE Kazutoshi, FUKUYAMA Hiroyuki, TSUKADA Takao, AWAJI Satoshi

    29　275-277　2008/10/08

    ISSN： 0911-1743

  106. 静磁場重畳（ガスジェット＋電磁浮遊）法による高温活性融体の熱物性測定

    福山博之, 小畠秀和, 高橋 翔, 塚田隆夫, 淡路 智

    東北大学金属材料研究所 強磁場超伝導材料研究センター　131-134　2008/06

  107. D132 Numerical Simulation of Phase Separation Behavior in a Binary Fluid Mixture Layer Subjected to Vertical Temperature and Concentration Gradients

    Onogi Daisuke, Sugioka Ken-ichi, Tsukada Takao, Kobayashi Masaki

    Procee[d]ings of Thermal Engineering Conference　2007　149-150　2007/11/23

    Publisher: The Japan Society of Mechanical Engineers

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    A mathematical model for phase separation of a binary mixture layer subjected to a vertical temperature gradient spanning the critical temperature and initially a vertical concentration gradient was developed in this study. Then, the effects of their gradients and convection driven by chemical potential gradient-induced capillary force on the phase separation structures were numerically investigated. As a result, it was shown that a stripe, a droplet, a bicontinuous or a horizontal two-layer structure appears depending on the magnitudes of the temperature and concentration gradients and convection.

  108. A STUDY ON THE EFFECT OF UNSTEADY THREE-DIMENTIONAL MELT FLOW ON CZ OXIDE CRYSTAL GROWTH PROCESS USING A GLOBAL ANALYSIS OF HEAT TRANSFER

    C. Jing, S. Ihara, K.-I. Sugioka, T. Tsukada, M. Kobayashi

    Proc. of the 1st Asian Symposium on Computational Heat Transfer and Fluid Flow　2007/10

  109. レーザー周期加熱カロリメトリー法による高温融体の熱容量，熱伝導率，放射率の非接触測定

    福山博之, 小畠秀和, 塚田隆夫, 淡路 智

    耐火物, 59 (2007), 475-482.　59　(9)　475-482　2007/09

  110. Measurements of thermal conductivity of 1-butyl-3-methylimidazolium tetrafluoroborate at high pressure

    Daisuke Tomida, Satoshi Kenmochi, Takao Tsukada, Chiaki Yokoyama

    Heat Transfer - Asian Research　36　(6)　361-372　2007/09

    DOI： 10.1002/htj.20166 　

    ISSN： 1099-2871 1523-1496

  111. THERMAL CCONDUCTIVITY OF IONIC LIQUIDS CONTAINING 1-BUTYL-3- METHYLIMIDAZOLIUM CATION + CO2 MIXTURES

    Daisuke TOMIDA, Satoshi KENMOCHI, Takao TSUKADA, Kun QIAO, Chiaki YOKOYAMA

    Proc. of the 8th Asian Thermophysical Properties Conference　2007/08

  112. Noncontact modulated laser calorimetry for liquid stainless steel with suppressed convections in a static magnetic field

    Kakeru Takahashi, Shoji Sakashita, Hidekazu Kobatake, Hiroyuki Fukuyama, Takao Tsukada, Satoshi Awaji

    Proc. of the 8th Asian Thermophysical Properties Conference　2007/08

  113. NONCONTACT MODULATED LASER CALORIMETRY FOR UNDERCOOLED LIQUID SILICON WITH SUPRESSED CONVECTIONS

    Hidekazu KOBATAKE, Kakeru TAKAHASHI, Syoji SAKASHITA, Hiroyuki FUKUYAMA, Takao TSUKADA, Satoshi AWAJI

    Proc. of the 8th Asian Thermophysical Properties Conference,　2007/08

  114. 単結晶育成用CZ炉の数値解析

    柿本浩一, 塚田隆夫, 今石宣之

    伝熱　46　(196)　49-57　2007/07

  115. 巻頭言－数値シミュレーションと熱物性

    塚田隆夫

    熱物性　21　(4)　192　2007/04

  116. 静磁場を重畳した電磁浮遊法による非平衡メルトの熱物性測定

    福山博之, 小畠秀和, 高橋 翔, 坂下翔士, 塚田隆夫, 淡路 智

    東北大学金属材料研究所 強磁場超伝導材料研究センター 平成18年度年次報告　164-167　2007

  117. 巻頭言－数値シミュレーションと熱物性

    塚田隆夫

    熱物性　21　192　2007

  118. Numerical Simulation of Single Crystal Growth Process

    TSUKADA Takao

    Journal of the Japanese Association of Crystal Growth　33　(4)　305-306　2006/11/30

    Publisher: The Japanese Association for Crystal Growth (JACG)

    ISSN： 0385-6275

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    In single crystal growth of silicon and oxide, it is important to acquire correct knowledge about transport phenomena in the crystal growth furnace and then to control them, because the quality of crystal is closely related to the transport phenomena in the furnace. Numerical simulation is one of the methods to understand the phenomena in the furnace, and recently there has been much interest in the calculation of melt convection and global analysis of heat transfer in the furnace. In this paper, the recent studies on numerical simulations of single crystal growth by the Czochralski method are introduced.

  119. Noncontact Laser AC Calorimetry of Molten Silicon

    FUKUYAMA Hiroyuki, KOBATAKE Hidekazu, TSUKADA Takao, AWAJI Satoshi

    23　(4)　325-325　2006/11/30

    ISSN： 0915-3616

  120. Verification of Noncontact AC Calorimetry of Electromagnetically Levitated Droplet in Static Magnetic Field by Numerical Simulation

    SUGIOKA Ken-ichi, TSUKADA Takao, FUKUYAMA Hiroyuki, KOBATAKE Hidekazu, AWAJI Satoshi

    23　(4)　326-326　2006/11/30

    ISSN： 0915-3616

  121. 25pZA-7 Simultaneous measurements of heat capacity, thermal conductivity, and emissivity of electromagnetically levitated droplet in a static magnetic field

    Fukuyama H., Kobatake H., Tsukada T., Awaji S.

    Meeting abstracts of the Physical Society of Japan　61　(2)　654-654　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  122. Establishment of Noncontact AC Calorimetry of High-Temperature Melts using Solid Platinum Sphere as a Reference

    Hiroyuki Fukuyama, Hidekazu Kobatake, Izuru Minato, Kakeru Takahashi, Takao Tsukada, Satoshi Awaji

    Proc. of the 16th Symposium on Thermophysical Properties　2006/08

  123. Noncontact AC calorimetry of liquid silicon with suppressing convections in a static magnetic field

    H. Kobatake, H. Fukuyama, I. Minato, T. Tsukada, S. Awaji

    Proc. of the 16th Symposium on Thermophysical Properties　2006/08

  124. 静磁場を重畳した電磁浮遊法による非平衡メルトの熱物性測定

    福山博之, 小畠秀和, 塚田隆夫, 淡路 智

    東北大学金属材料研究所 強磁場超伝導材料研究センター 平成17年度年次報告　181-183　2006/06

  125. 静磁場と電磁浮遊による高温融体の新しい熱容量，放射率，熱伝導率同時測定法の開発

    福山博之, 小畠秀和, 塚田隆夫, 淡路智

    まてりあ　45　(7)　523-526　2006

    Publisher: The Japan Institute of Metals and Materials

    DOI： 10.2320/materia.45.523 　

    ISSN： 1340-2625

  126. 静磁場中非接触ACカロリメトリーによる溶融シリコンの熱容量，放射率，熱伝導率同時測定法の開発

    福山博之, 小畠秀和, 塚田隆夫, 淡路智

    熱測定　33　(5)　204-210　2006

    Publisher: 日本熱測定学会

    DOI： 10.11311/jscta1974.33.204 　

    ISSN： 0386-2615

  127. 微粒子凝集体の力学的特性の測定と変形ダイナミクスの解明

    塚田隆夫

    ANNUAL REPORT OF HOSOKAWA POWDER TECHNOLOGY FUNDATION　14　139-144　2006

  128. Numerical Simulation of Materials Processing Using Supercritical Fluids

    TSUKADA Takao, ADSCHIRI Tadafumi

    The Computational Mechanics Conference　2004　(17)　151-152　2004/11/17

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 1348-026X

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    In the present paper, we describe numerical simulation of process which produces nanoparticles by hydrothermal synthesis in supercritical phase, where the reactants and the hot water are mixed in the reactor and consequently nanoparticles precipitate through chemical reaction, nucleation and crystal growth processes. The mathematical model of the process shown here links the kinetics of chemical reaction, nucreation and crystal growth to the thermo-fluid dynamics in a wide range of temperature below and above the critical point, at which the themophysical properties such as density change very significantly.

  129. Hydrothermal Synthesis of Functional Nanoparticles: Process and Properties

    阿尻雅文, 高見誠一, 梅津光央, 大原 智, 塚田隆夫

    粉体と工業　36　(5)　59-69　2004/05

  130. Pattern formation in Benard convection accompanied by phase separation

    SEKI Yuichiro, KOBAYASHI Masaki, TSUKADA Takao, HOZAWA Mitsunori

    20　34-34　2003/10/23

    ISSN： 0915-3616

  131. Effect : of operating conditions on spoke pattern on oxide melt surface

    JING C. J., KOBAYASHI M., TSUKADA T., HOZAWA M., IMAISHI N., SHIMAMURA K., ICHINOSE N.

    Journal of the Japanese Association of Crystal Growth　30　(3)　70-70　2003/07/05

    Publisher: The Japanese Association for Crystal Growth (JACG)

    ISSN： 0385-6275

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    The effects of internal radiative heat transfer and rf coil position on spoke patterns on oxide melt surface were numerically investigated. It was found that the spoke pattern disappeared once when the internal radiative heat transfer was taken into account in the melt. In addition, appearance of the spoke pattern was dependent on the rf coil position. When the rf coil was set to be higher position relative to the crucible or the heat generation rate was relatively larger, the spoke patterns were difficult to generate.

  132. シリコン単結晶成長に関わる最近の数値シミュレーション技術と熱物性値

    塚田隆夫

    熱物性　17　(3)　228-232　2003/07

  133. シリコン結晶成長プロセスシミュレーションに要求される熱物性値調査

    福山博之, 塚田隆夫, 渡辺匡人, 田中敏宏, 馬場哲也, 日比谷孟俊

    熱物性　17　(3)　218-222　2003/07

  134. 超臨界水熱合成によるナノ粒子合成

    阿尻雅文, 高見誠一, 塚田隆夫

    材料の科学と工学　40　(3)　96-100　2003/06

    Publisher: 日本材料科学会

    ISSN： 1347-4774

  135. 食品の熱伝導率測定用プローブの開発

    塚田隆夫, 宝沢光紀

    熱物性　17　(1)　70-75　2003/01

  136. シリコン単結晶成長に関する最近の数値シミュレーション技術と熱物性値

    塚田隆夫, 水戸光将, 宝沢光紀, You-Rong Li, 今石宣之

    日本結晶成長学会誌　30　(5)　357-363　2003/01

  137. シリコン単結晶成長プロセスの数値シミュレーションに要求される熱物性値

    福山博之, 塚田隆夫, 渡邉匡人, 田中敏宏, 馬場哲也, 日比谷孟俊

    日本結晶成長学会誌　30　(5)　364-369　2003/01

  138. 化学工学年鑑2002「6.7 電子材料単結晶育成」

    塚田隆夫

    化学工学　66　(10)　618-619　2002/10

  139. Effect of Gravity on Pattern Formation in Binary Fluid Mixture

    OKABE Takahiro, OHSHIDA Yoshihiro, KOBAYASHI Masaki, KUBO Masaki, TSUKADA Takao, HOZAWA Mitsunori

    18　46-46　2001/10/01

    ISSN： 0915-3616

  140. あわのメカニズム

    塚田隆夫

    MATERIAL STAGE　1　(4)　28-32　2001/07

  141. 小型のシリコンCZ炉内の酸素輸送とマランゴニ効果

    今石宣之, 李 明偉, 塚田隆夫

    日本結晶成長学会誌, 27 (2000), 281-287.　27　(5)　281-287　2000/12

    DOI： 10.19009/jjacg.27.5_281 　

  142. 化学工学年鑑2000「6.5 電子材料単結晶育成」

    塚田隆夫

    化学工学　64　(10)　521　2000/10

  143. EFFECT OF INTERNAL RADIATIVE HEAT TRANSFER ON INTERFACE INVERSION IN CZ GROWTH OF AN OXIDE SINGLE CRYSTAL

    M. Kobayashi, T. Hagino, T. Tsukada, M. Hozawa

    Proc. of 2000 IAMS International Seminar　138-143　2000/10

  144. CMPプロセスにおける研磨粒子ダイナミクスの解明

    久保 正樹, 国守 博巳, 福田 晃, 塚田 隆夫, 寶澤 光紀

    精密工学会大会学術講演会講演論文集　2000　(1)　390-390　2000/03/01

  145. 電磁浮遊液滴の挙動に関する数値解析

    朝熊裕介, 平田琢也, S.-H. HAHN, 塚田隆夫, 宝沢光紀, 松本大平, 藤井英俊, 野城清, 今石宣之

    化学工学シンポジウムシリーズ72　142-151　2000/02

  146. 光音響法による非線形光学高分子の熱拡散率測定

    小林弘明, 吉田欽一, 久保正樹, 塚田隆夫, 宝沢光紀, 佐藤正秀

    化学系7学協会連合東北地方大会プログラムおよび講演予稿集　1999　161　1999/10/02

  147. Investigation on various factors in the CZ crystal growth process of oxide by a global analysis of heat transfer.

    KOBAYASHI Masaki, HAGINO Takako, TSUKADA Takao, HOZAWA Mitsunori

    Journal of the Japanese Association of Crystal Growth　26　(2)　127-127　1999/07/01

    Publisher: The Japanese Association for Crystal Growth (JACG)

    ISSN： 0385-6275

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    The global analysis of heat transfer In the CZ crystal growth furnace was carried out. Especially, the effects of internal radiation and crystal rotation on the melt/crystal Interface shape was Investigated numerically.

  148. Numerical Simulation of Heat Transfer in Floating Zone Single Crystal Growth Process with Radio-frequeny Induction Heating

    Reports of the Tohoku National Industrial Research Institute　(31)　13-21　1998/03

    Publisher: 東北工業技術研究所

    ISSN： 0919-8881

  149. クエスチョンボックス・ワンポイント

    塚田隆夫

    化学工学　62　(3)　163　1998/03

  150. The influence of factors on the thermal diffusivity of polymer thin films.

    吉田欽一, 小林弘明, 塚田隆夫, 宝沢光紀, 佐藤正秀

    化学工学会年会研究発表講演要旨集　63rd　20　1998/02

  151. Measurement of thermal diffusivity of nonlinear optical polymer thin films.

    小林弘明, 吉田欽一, 久保正樹, 塚田隆夫, 宝沢光紀, 佐藤正秀

    Thermophys Prop　19th　223-226　1998

    ISSN： 0911-1743

  152. Effect of processing conditions on drop behavior of molten silicon in an electromagnetic levitator

    SAKAI Yoshinori, HAHN Seung-Ho, TSUKADA Takao, HOZAWA Mitsunori, MATSUMOTO Taihei, NOGI Kiyoshi, IMAISHI Nobuyuki, KITAGAWA Sadao

    14　67-68　1997/10/01

    ISSN： 0915-3616

  153. Effects of the Radiative Characteristics of Crystal Surface on the Global Analysis of a Si Cz Furnace

    HAHN S. H., TSUKADA T., HOZAWA M., MARUYAMA S., IMAISHI N., KITAGAWA S.

    Journal of the Japanese Association of Crystal Growth　24　(2)　93-93　1997/07/01

    Publisher: The Japanese Association for Crystal Growth (JACG)

    ISSN： 0385-6275

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    In the global analysis of Si Cz system,only diffuse hypothesis,for the surfaces related to radiation heat transfer,has been used without any proof.In this study,the global analysis of heat transfer in the Cz system with diffuse and specular surfaces was carried out,and the effects of the different radiative characteristics of the surfaces on the Si Cz crystal growth were investigated.

  154. Separation and collection technology and solvent extraction of rare metal resources. Effects of outside water phase dilution on Ga extraction by emulsifying liquid film methods.

    佐藤正秀, 塚田隆夫, 宝沢光紀

    化学工学シンポジウムシリーズ　60　193-200　1997/03

  155. Effect of dc electric field on the behavior of a compound drop

    SATO Masahide, MAYAMA Junya, TSUKADA Takao, HOZAWA Mitsunori

    JASMA : Journal of the Japan Society of Microgravity Application　13　(4)　378-379　1996/10/31

    ISSN： 0915-3616

  156. 結晶成長時の界面挙動及びその制御

    塚田隆夫

    化学工学　60　(4)　241-243　1996/04

    Publisher: 化学工学会

    ISSN： 0375-9253

  157. Effect of various parameters on flow and temperature fields during CZ growth of oxide single crystals

    Y. Okano, A. Hirata, S. Nishizawa, T. Tsukada, M. Hozawa, N. Imaishi

    Proc. of the International Conference on Computational Engineering Science　1　550-555　1995/08

  158. Effect of unequal electric field on bubble motion under microgravity environment.

    山本幸弘, 佐藤正秀, 塚田隆夫, 宝沢光紀

    化学工学会年会研究発表講演要旨集　60th　(Pt 3)　84　1995/03

  159. STUDY ON BEHAVIOR OF A DROP IN A DIELECTRIC LIQUID UNDER AN UNIFORM ELECTRIC FIELD

    TSUKADA Takao, MAYAMA Junya, SATO Masahide, HOZAWA Mitsunori

    微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization　4　101-105　1995

    ISSN： 1341-6030

  160. 2‐ブロモデカン酸によるGaの抽出速度に及ぼすAlの影響

    佐藤正秀, 宝沢光紀, 塚田隆夫

    化学工学会秋季大会研究発表講演要旨集　27th　(Pt 1)　32　1994/09

  161. 非イオン性W/Oマイクロエマルションを利用するTiO2超微粒子の調製

    小林正樹, 佐藤正秀, 宝沢光紀, 塚田隆夫

    化学工学会秋季大会研究発表講演要旨集　27th　(Pt 2)　92　1994/09

  162. W/Oエマルションの連続式解乳化

    佐藤正秀, 塚田隆夫, 宝沢光紀

    化学工学シンポジウムシリーズ39　147-152　1994/02

  163. Simultaneous heat and moisture transfer with hygrostrain-stress formation in food undergoing drying

    K Hayakawa, T Tsukada, T Furuta, N Sakai

    DEVELOPMENTS IN FOOD ENGINEERING, PTS 1 AND 2　418-420　1994

  164. 酸化物単結晶育成における数値計算

    塚田隆夫, 宝沢光紀, 今石宣之

    日本結晶成長学会誌　20　(1)　21-26　1993/06

    DOI： 10.19009/jjacg.20.1_21 　

  165. 軸対称系における角関係の一計算法

    塚田隆夫, 宝沢光紀, 大庭雄次, 今石宣之

    九州大学機能物質科学研究所報告　7　(1)　39-46　1993

  166. 液膜を用いるガリウム, インジウムの分離濃縮プロセスに関する実験的, 理論的研究

    宝沢光紀, 今石宣之, 塚田隆夫

    旭硝子財団研究報告　57　101-110　1990/07

  167. チョクラルスキー炉内の流速・温度分布と熱応力解析

    今石宣之, 塚田隆夫, 宝沢光紀

    九州大学機能物質科学研究所報告　3　(1)　9-19　1989/09

    Publisher: Kyushu University

    DOI： 10.15017/6552 　

    ISSN： 0914-3793

    More details Close

    Single crystal of oxides, such as Al_2O_3 and LiNbO_3, are prepared by Czochralski method. Melted oxides have larger Prandtl number than the molten semiconducting materials, thus shape of the crystal varies with operating conditions. The shape and temperature distribution give influences on thermal stress, and the quality of the crystal. There was, however, no theoretical background to calculate thermal stress in the growing crystal, because of the complicatedly coupled non-linear phenomena in the CZ furnace. The finite element method is used to develop a computational code and sample computations are carried out for Al_2O_3 system. In this case, the crystal shape, and the thermal stress distribution are found to be dependent on the crystal rotation rate. When crystal rotation rate is increased, with other operating conditions unchanged, the melt/crystal interface changes its shape from convex to concave toward melt, at the critical Reynolds number (Re_s). When Re_s<Re_s, the maximum thermal stress on the melt/crystal interface is small and insensible to Re_s. When Re_s exceeds Re_s, thermal stress on the interface increases very rapidly.

  168. CZ法によるシリコン単結晶成長に及ぼす輻射熱遮蔽体の影響

    塚田隆夫

    化学工学　53　(6)　388-390　1989/06

  169. CZ法によるSi単結晶成長に及ぼす輻射熱遮蔽体の影響 : 融液成長II

    塚田 隆夫, 今石 宣之, 宝沢 光紀

    日本結晶成長学会誌　14　(1)　11-11　1987/07/10

    Publisher: 日本結晶成長学会

    ISSN： 0385-6275

  170. CZ法による単結晶育成時の流動及び温度場の理論的解析 : 融液成長II

    塚田 隆夫, 今石 宣之, 宝沢 光紀

    日本結晶成長学会誌　14　(1)　10-10　1987/07/10

    Publisher: 日本結晶成長学会

    ISSN： 0385-6275

  171. Supercritical Hydrothermal Synthesis of Nanoparticles

    YOKO AkiraAkira Yoko, Tsutomu Aida, Nobuaki Aoki, Daisuke Hojo, Masanori Koshimizu, Satoshi Ohara, Gimyeong Seong, Seiichi Takami, Takanari Togashi, Takaaki Tomai, Takao Tsukada, Tadafumi Adschiri

    Nanoparticle Technology Handbook (Third Edition)

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Books and Other Publications 20

  1. Supercritical Hydrothermal Synthesis of Nanoparticles. In: M. Naito, T. Yokoyama, K. Hosokawa and K. Nogi, editors. Nanoparticle Technology Handbook 3rd edition

    A. Yoko, T. Aida, N. Aoki, D. Hojo, M. Koshimizu, S. Ohara, G. Seong, S. Takami, T. Togashi, T. Tomai, T. Tsukada, T. Adschiri

    Elsevier　2018

  2. The Role of Marangoni Convection in Crystal Growth. In: T. Nishinaga, P. Rudolph, editors. Handbook of Crystal Growth, Vol. II

    Takao Tsukada

    Elsevier　2015

  3. 基礎から理解する化学４，化学工学

    塚田隆夫

    みみずく舎　2012

  4. 改訂７版 化学工学便覧, 化学工学会編

    塚田隆夫

    丸善　2011

  5. High-Temperature Measurements of Materials

    Hiroyuki Fukuyama, Hidekazu Kobatake, Takao Tsukada, Satoshi Awaji

    Springer　2009

  6. Crystal Growth Technology : From Fundamentals and Simulation to Large-scale Production, H.J. Scheel and P. Capper Eds.

    Taketoshi Hibiya, Hiroyuki Fukuyama, Takao Tsukada, Masahito Watanabe

    Wiley-VCH　2008

  7. ナノマテリアル工学大系 第1巻ニューセラミクス・ガラス

    阿尻雅文, 高見誠一, 梅津光央, 大原 智, 塚田隆夫

    フジ・テクノシステム　2005

  8. 超臨界流体とナノテクノロジー，阿尻雅文監修

    塚田隆夫, 阿尻雅文

    シーエムシー出版　2004

  9. 泡トラブルの対策と消泡技術

    塚田隆夫

    技術情報協会　2002

  10. シリーズ：結晶成長のダイナミクス7巻 流れのダイナミクスと結晶成長，柿本浩一編

    塚田隆夫

    共立出版　2002

  11. 軌道上実験概論, 小田原修監修/日本マイクログラビティ応用学会編

    塚田隆夫

    海文堂出版　2000

  12. 計算力学 [VI] －電子デバイス/機器設計における計算力学の適用－, 宮崎則幸/白鳥正樹共編

    塚田隆夫

    養賢堂　1999

  13. 高圧バイオテクノロジー，功刀滋/林力丸編

    M. SHARIATY-NIASSAR, 大塚雅彦, 向展正, 塚田隆夫, 宝沢光紀

    さんえい出版　1998

  14. Creative Chemical Engineering Course 6 拡散と移動現象，化学工学会監修

    塚田隆夫

    培風館　1996

  15. 結晶成長ハンドブック，日本結晶成長学会編

    今石宣之, 塚田隆夫

    共立出版　1995

  16. 新編伝熱工学の進展 第１巻，日本機械学会編

    今石宣之, 塚田隆夫

    養賢堂　1995

  17. 抽出技術集覧，化学工学会関東支部/分離技術会編

    塚田隆夫

    化学工業社　1995

  18. 最近の化学工学46 材料化学工学：新材料プロセッシング，化学工学会関東支部編

    塚田隆夫

    化学工業社　1994

  19. 図説地球環境 温室の中の地球，J. Erickson著/小島紀徳監訳

    塚田隆夫

    オーム社　1992

  20. HEAT AND MASS TRANSFER IN MATERIALS PROCESSING, I. Tanasawa and N. Lior Eds.

    NOBUYUKI IMAISHI, TAKAO TSUKADA, MITSUNORI HOZAWA, YASUNORI OKANO, AKIRA HIRATA

    Hemisphere　1992

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Presentations 29

  1. 水熱合成法によるバルク単結晶育成時の三次元伝熱解析 -バッフル板の影響

    増田善雄, 鈴木 明, 三川 豊, 鏡谷勇二, 石黒 徹, 横山千昭, 塚田隆夫

    第70回応用物理学学術講演会　2009/09

  2. 電磁浮遊技術を利用した高温融体の熱物性測定

    塚田隆夫

    化学工学会東北支部第１４回東北ジョイント夏季セミナー　2009/08

  3. 一様な脈動流中の球形粒子に働く抗力の評価

    杉岡 健一, 見上 信, 塚田 隆夫, 小森 悟

    化学工学会74年会　2009/03

  4. 電磁浮遊炉内の溶融液滴内対流に及ぼす静磁場印加効果

    杉岡 健一, 塚田 隆夫, 小畠 秀和, 福山 博之

    化学工学会74年会　2009/03

  5. 非接触レーザー周期加熱カロリメトリーによるシリコン融体の熱容量,半球全放射率および熱伝導率の精密測定

    小畠秀和, 福山博之, 塚田隆夫, 淡路智

    日本鉄鋼協会 第157回春季講演大会　2009/03

  6. 高温融体の高精度熱物性（比熱，熱伝導率，放射率，密度，表面張力）計測システムの開発

    福山博之, 小畠秀和, 小澤俊平, 諸星圭祐, 日比谷孟俊, 青柳智勇, 水野章敏, 渡邉匡人, 杉岡健一, 塚田隆夫, 遠藤聡, 小島真一郎, 高橋洋一, 真造謹爾, 本河光博

    第38回結晶成長国内会議(NCCG-38)　2008/11

  7. ３次元非定常融液対流を考慮した酸化物CZ炉総合熱解析―時空間平均化法の検討

    塚田隆夫, 杉岡健一, 小林正樹, 敬成君

    第38回結晶成長国内会議(NCCG-38)　2008/11

  8. 非接触レーザー周期加熱カロリメトリーによるシリコン融体の熱容量および熱伝導率測定の高精度化

    小畠秀和, 杉江一寿, 福山博之, 塚田隆夫, 淡路 智

    第29回日本熱物性シンポジウム　2008/10

  9. Measurement of Heat Capacity and Thermal Conductivity of Supercooled Liquid Silicon International-presentation

    Hidekazu Kobatake, Hiroyuki Fukuyama, Kakeru Takahashi, Takao Tsukada, Satoshi Awaji

    18th European Conference on Thermophysical Properties　2008/09

  10. Noncontact modulated laser calorimetry for liquid stainless steel in dc magnetic field International-presentation

    Hiroyuki Fukuyama, Kakeru Takahashi, Hidekazu Kobatake, Takao Tsukada, Satoshi Awaji

    18th European Conference on Thermophysical Properties　2008/09

  11. 無機ナノ粒子/高分子コンポジット薄膜におけるdewetting現象

    安藤 宏和, 杉岡 健一, 塚田 隆夫, 南 公隆, 阿尻 雅文

    化学工学会第40回秋季大会　2008/09

  12. 静磁場印加電磁浮遊法による高温融体の熱伝導率測定に及ぼす対流の影響

    杉岡 健一, 堤之 朋也, 塚田 隆夫, 小畠 秀和, 福山 博之

    化学工学会第40回秋季大会　2008/09

  13. ソルボサーマル炉内における自然対流熱伝達の三次元解析

    増田善雄, 鈴木明, 三川豊, 横山千昭, 塚田隆夫

    第69回応用物理学会学術講演会　2008/09

  14. レーザー周期加熱カロリメトリーによるシリコン融体の熱容量・熱伝導率の精密測定

    小畠秀和, 杉江一寿, 福山博之, 塚田隆夫, 淡路 智

    日本金属学会2008年秋期大会　2008/09

  15. 非接触レーザー周期加熱カロリメトリーによるシリコン融体の熱容量および熱伝導率の精密測定

    小畠秀和, 杉江一寿, 福山博之, 塚田隆夫, 淡路智

    日本鉄鋼協会第156回秋季講演大会　2008/09

  16. 液中での微粒子の凝集挙動及び微粒子凝集体固有の変形ダイナミクスの解明

    塚田隆夫

    平成20年度第１回粉体接合グループ会　2008/06

  17. 単結晶成長プロセスの高効率化に向けた数値シミュレーション技術

    塚田隆夫

    化学工学会関西支部「環境・廃棄物研究会」及び「資源・エネルギー研究会」合同研究会　2008/06

  18. Numerical simulation of natural convection heat transfer in a ZnO single crystal growth hydrothermal autoclave International-presentation

    Y. Masuda, A. Suzuki, Y. Mikawa, C. Yokoyama, T. Tsukada

    The 4th Asian Conference on Crystal Growth and Crystal Technology (CGCT4)　2008/05

  19. Numerical analysis of CZ oxide crystal growth process by a global model of heat transfer considering unsteady three-dimensional melt flow International-presentation

    Y.Tsujimoto, K. Sugioka, T. Tsukada, C.J. Jing, M. Kobayashi

    The 4th Asian Conference on Crystal Growth and Crystal Technology (CGCT4)　2008/05

  20. Solubility of GaN in Supercritical Ammonia with Ammonium Halides as Mineralizers International-presentation

    C. Yokoyama, K. Kuroda, Y. Mikawa, Y. Masuda, T. Tsukada, D. Tomida

    The 4th Asian Conference on Crystal Growth and Crystal Technology (CGCT4)　2008/05

  21. 温度勾配存在下における二成分液体混合系液膜層内の相分離過程に及ぼす対流の影響

    小野木大介, 杉岡 健一, 塚田 隆夫, 小林正樹

    第45回伝熱シンポジウム　2008/05

  22. ３次元非定常融液対流を考慮した酸化物単結晶CZ炉の総合熱解析

    辻本優子, 杉岡健一, 塚田隆夫, 敬成君, 小林正樹

    第10回化学工学学生発表会　2008/03

  23. 微粒子凝集体固有の圧縮変形特性に関する実験並びに理論的検討

    猪口 剛, 杉岡 健一, 塚田 隆夫, 藤田 昌大, 山口 由岐夫

    化学工学会第73年会　2008/03

  24. 温度・濃度勾配共存下での相分離挙動に関する数値シミュレーション

    小野木大介, 杉岡 健一, 塚田 隆夫, 小林正樹

    化学工学会第73年会　2008/03

  25. 電磁浮遊技術を利用した高温融体の熱物性測定

    塚田隆夫

    化学工学会粒子・流体プロセス部会気泡塔分科会第11回気泡塔サロン　2008/03

  26. 静磁場で対流を抑制したステンレス融体に対する非接触レーザー周期加熱カロリメトリー

    小畠秀和, 高橋翔, 福山博之, 塚田隆夫, 淡路智

    日本金属学会2008年春期大会　2008/03

  27. 過冷却シリコン融体の熱容量および熱伝導率測定

    小畠秀和, 高橋翔, 福山博之, 塚田隆夫, 淡路智

    日本鉄鋼協会第155回春季講演大会　2008/03

  28. 漏斗形バッフル板を用いた場合のGaN単結晶育成時のアノモサーマル炉内熱解析

    増田善雄, 鈴木明, 三川豊, 横山千昭, 塚田隆夫

    第55回応用物理学関係連合講演会　2008/03

  29. 酸化物単結晶成長プロセスの数値シミュレーション

    塚田隆夫, 杉岡健一, 小林正樹, 敬 成君

    第55回応用物理学関係連合講演会　2008/03

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Research Projects 35

  1. Dynamics of fine particle aggregates in liquid phase Competitive

    2003/04 - Present

  2. 不均一場での多成分系相分離現象の解明 Competitive

    2002/04 - Present

  3. Transport phenomena in manufacturing process of polymer thin film Competitive

    2000/04 - Present

  4. Transport phenomena in electromagnetically levitated molten materials Competitive

    1998/04 - Present

  5. Transport phenomena in single crystal growth process of semiconductor and oxide Competitive

    1987/04 - Present

  6. プロセス－構造－物性相関に基づく高熱伝導コンポジット材料プロセス設計指針の確立

    塚田 隆夫

    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

    2022/04/01 - 2025/03/31

  7. Investigation of correlation between process and phase separation structure of multicomponent alloys and establishment of guideline for new materials process design

    Tsukada Takao

    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

    2019/04/01 - 2022/03/31

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    The effect of static magnetic filed (i.e., melt convection) on the phase separation structures of undercooled Cu-Co and Cu-Fe alloys solidified under a static magnetic field was clarified using an electromagnetic levitation (EML) technique superimposed with a static magnetic field and neutron CT. By direct numerical simulations of three-dimensional, unsteady magnetohydrodynamic (MHD) convection in a spherical electromagnetically levitated molten Cu-Co droplet under different strengths of the static magnetic field, it was demonstrated that the marked change in phase separation structures in undercooled Cu-Co alloys with increasing the static magnetic filed was closely related to the laminar-turbulent transition of MHD convection in the levitated droplet. The compositional dependence of the thermal conductivity of a molten Cu-Fe alloy at low Fe contents was measured by combining the EML with a static magnetic field and a periodic laser heating method.

  8. Affinity estimation of organic-inorganic interfaces using molecular simulations and its development to design of composite materials

    Tsukada Takao

    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 - 2021/03/31

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    An estimation method of the work of adhesion indicating the interfacial affinity between surface-modified inorganic solid materials and organic solvents has been established by using molecular dynamics simulations with the phantom-wall method, one of the thermodynamic integration methods. The effects of surface-modifying molecules, organic solvents and surface coverage on the interfacial molecular structures and the work of adhesion were investigated. In the case of decanoic acid (surface-modifying molecule)/hexane (solvent) system, the work of adhesion took the maximum value at 75% surface coverage due to the interfacial molecular structures. For surface-modifying molecules and solvents, the work of adhesion increased as the degree of penetration of solvent molecules into the layer of surface-modifying molecules increased.

  9. Mesoscopic analysis of dynamic interfacial behavior of dense nanofluids

    Tsukada Takao

    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

    2016/04/01 - 2019/03/31

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    In this study, in-situ observation of the microscopic wetting behavior of a suspension droplet consisting of polydimethylsiloxane (PDMS) and PDMS-modified SiO2 nanoparticles was performed by a phase-shifting ellipsometer when the droplet moved on a Si substrate, and the effect of the presence of nanoparticles on the contact angle and the thickness distribution of precursor film near the contact line were investigated. In addition, numerical simulations for the structure formation of surface-modified nanoparticles during solvent evaporation were carried out, and the effects of organic solvents, surface modifiers and the surface density of the modifiers on the structures of nanoparticles during and after solvent evaporation were clarified.

  10. Flow visualization of heavy oil in supercritical water atmosphere by neutron radiography

    Tsukada Takao, KUBO MASAKI

    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

    2016/04/01 - 2018/03/31

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    For a packed bed reactor, which consists of a 1/2-inch stainless steel tube filled with alumina particles having the diameter of 3 mm, the flow behavior of heavy oil in the reactor under the atmosphere of nitrogen gas or supercritical water was observed by neutron radiography. In the heavy oil/nitrogen gas system, the effect of reactor temperature on the flow behavior at atmospheric pressure was clarified. Particularly, the flow channeling was observed in the reactor at a relatively high temperature. In the heavy oil/supercritical water system, the effect of flow rate of heavy oil on the flow behavior was investigated at 400℃ and 25 MPa. Through this work, it was revealed that neutron radiography is a useful technique to visualize the flow behavior of heavy oil in a packed bed reactor, whose wall was made of metal, at high temperature and high pressure.

  11. Investigation of formation mechanism of two-dimensional spatial structures of nanoparticles in polymer thin films

    Tsukada Takao, ADSCHIRI TADAFUMI, KUBO MASAKI, SUGIOKA KENICHI

    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

    2014/04/01 - 2016/03/31

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    The spatial structures of organic molecule-modified CeO2 nanoparticles in polystyrene (PS) nanocomposite thin films spin-coated on silicon substrates were observed by TEM and SPM, before and after the films underwent thermal annealing above the glass transition temperature of PS. TEM images indicated that the nanoparticles segregated to the surface of PS nanocomposite thin film after spin-coating process. Then, the nanoparticles migrated away from the film surface to the substrate/film interface during thermal annealing, maintaining the two-dimensional spatial structures. Here, we clarified the effect of interaction between nanoparticles, i.e., surface modifiers on the nanoparticles, and solvent or PS on the spatial structures of nanoparticles before and after thermal annealing. In addition, the mechanism of nanoparticle migration across the PS thin film was investigated.

  12. Development of system to analyze the undercooling solidification process of molten materials at high temperature

    Tsukada Takao, FUKUYAMA HIROYUKI, KUBO MASAKI, SUGIOKA KENICHI

    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

    2013/04/01 - 2016/03/31

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    To investigate the effect of melt convection in molten Cu80Co20 on phase separation structures in the undercooled state, the velocity distributions on the surface of an electromagnetically levitated molten Cu80Co20 droplet were measured using a high-speed video camera, and then the structures of the solidified sample were observed by SEM, where the strength of convection was controlled by applying a static magnetic field to the droplet. As a result, it was revealed that the transition from turbulent flow to laminar one in the droplet occurs around 1.5 T at which the phase separation structure of Cu-Co alloy changes remarkably. In addition, the normal spectral emissivity and surface tension of molten Cu-Co alloys with different compositions were measured in the wide temperature range including the undercooling condition by using the same electromagnetic levitator.

  13. In-situ neutron tomography on mixing behavior in a reactor for supercritical hydrothermal synthesis

    TSUKADA TAKAO, TAKAMI Seiichi, TAKENAKA Nobuyuki, SAITO Yasushi, KUBO Masaki, SUGIOKA Kenichi

    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

    2012/04/01 - 2014/03/31

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    In this study, the mixing behavior of supercritical water and room temperature water in three types of tubular flow reactors with different geometries for supercritical hydrothermal synthesis was visualized by using neutron radiography, and the effect of mass flow rates of supercritical and room temperature water on the temperature distributions in the reactor was clarified, comparing with the results of numerical simulations. In addition, neutron computed tomography (CT) was carried out to acquire the detailed knowledge of three-dimensional distributions of water density in the reactor.

  14. Investigation of relationship between transport phenomena and spatial structure of nanoparticles in nanoparticles/polymer composite thin films

    TSUKADA Takao, AJIRI Tadafumi, KUBO Masaki

    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

    2009 - 2011

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    For the design and optimization of coating process of nanoparticles/polymer composite thin films and their devise manufacturing, solvent evaporation from the films and dewetting dynamics of the films during thermal annealing were observed, and the relationship between these phenomena and the spatial structure of nanoparticles in the films was investigated. The evaporation rate of organic solvent from the film was strongly affected by the presence of nanopraticles. The dewetting was suppressed by adding nanoparticles which segregated to the film surface. Brownian dynamics simulations suggested that the dispersion state of nanoparticles in solvent depends on the combination of solvent and organic molecules to modify the nanoparticle surface.

  15. 不均一場における相分離構造形成の数理モデリング手法の開発

    塚田 隆夫

    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: 大阪府立大学

    2005 - 2006

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    不均一場(流動場・温度場・濃度場)における相分離構造形成に関する数理モデリング手法の確立を目指し、以下の3つのステップに従いモデルの開発を進めた。 1.温度及び濃度勾配下での2成分系相分離現象(簡略化モデル) 2成分混合液からなる薄い液膜層に温度及び濃度勾配を付与した際に発現する相分離現象の数値シミュレーションコードを開発した。本モデルは、連続式、運動方程式、エネルギー方程式及びCahn-Hilliard方程式の練成問題であり、数値解析手法として差分法を採用した。ただし、対象としている速度のオーダーが小さいと仮定し、ここではストークス流れに基づき流れ場の解析を行った。結果として、相分離構造に及ぼす温度勾配、濃度勾配さらにはペクレ数(流体力学的効果)の影響を理論的に検討し、それぞれの影響を軸とする3次元空間上に対して相分離構造のマッピングを行った。 2.温度及び濃度勾配下での2成分系相分離現象 比較的速度が大きい場合でも対応できるように、移流項に対してGodunov法を適用したコードを開発し、相分離構造に及ぼす温度及び濃度勾配の影響を検討した。特に温度・濃度勾配に重力場が共存した場合の相分離過程について明らかにした。 3.溶媒蒸発による高分子/高分子/溶媒3成分系相分離現象を伴うレベリング現象 溶媒蒸発を伴う高分子/高分子/溶媒3成分系薄膜のレベリング現象を潤滑理論に基づき解析し、これをCahn-Hilliard方程式による相分離現象の解析と統合することを試みた。しかし、議論ができるほどの数値シミュレーション結果を出すまでには至らなかった。今後の課題として、研究を継続する予定である。

  16. Precise analysis of coating defect formation on nanoparticles/polymer composite thin films

    TSUKADA Takao, ADSHIRI Tadafumi, IMAISHI Nobuyuki

    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: Osaka Prefecture University

    2005 - 2006

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    The ultimate aim of our work is to acquire correct understandings for the dewetting behavior of nanoparticles/polymer composite thin films in order to determine the optimum conditions for a defect-free and smooth coating of the films. In the present work, the following points were investigated as the first step. The dewetting behavior of polystyrene (PS) thin films containing CeO_2 nanoparticles on a silica glass plate coated with octadecyltrietoxysilane was observed using a phase-shifting interference microscopy, a laser scanning confocal microscopy and an atomic force microscopy, where the PS film was spin coated on the silane-coated substrate, and then was annealed at 353 K. The surface of the CeO_2 nanoparticles used here were modified with decanoic acid through the organic-ligand-assisted supercritical hydrothermal process, and consequently, the nanoparticles obtained were cubic-shaped ones with average edge length of 4-6 nm and could be dispersed completely in organic solvents. The film thickness was approximately 20-30 nm. As a result, several holes, i.e., dry patches with a rim, caused by the dewetting process appeared on the PS film containing nanoparticles, expanded and approached one another. Then, the approaching holes became a bridging filament, and finally, broke and left behind isolated small droplets on the substrate. Also, it seemed that the dewetting process of the PS film containing nanoparticles was faster than that without nanoparticles, although we could not discuss quantitatively the comparison between the dewetting behaviors with and without nanoparticles because the dewetting behavior without nanoparticles at the initial stage could not be observed. It was found that the size of the small droplets left on the substrate became smaller when the nanoparticles were added. In addition, numerical simulations of dewetting process based on the lubrication approximation were carried out, considering that the enhancement of dewetting by addition of nanoparticles was due to the variation of apparent Hamaker constant of the film.

  17. Study on compressive and shear deformations of an abrasive particle aggregate in chemical mechanical polishing process

    TSUKADA Takao, KUBO Masaki

    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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    The aims of the present work are to manufacture a micro compression tester to measure the mechanical properties of a particle aggregate formed in a shear flow, and to investigate the effect of several factors on the compressive deformation characteristics of the aggregate. This year, the followings were carried out. 1.Manufacture of glass fiber probe : a manufacturing technique of a glass fiber probe to compress a particle aggregate was established by combining hydrofluoric acid etching and optical polishing. 2.Visualization of compressive deformation behavior of particle aggregate : a three-dimensional visualization technique of aggregate by superimposing laser scanning confocal microscope images was established. 3.Compression test : the compression test of a particle aggregate formed in a shear flow was carried out, and the effectiveness of a micro compression tester developed here was demonstrated. Before the compression test, the aggregation and breakup behaviors of latex particles in shear flow confined between two parallel plates were investigated using an in situ observation apparatus with a laser scanning confocal microscope. As a result, the average size of the aggregates decreases as shear rate increases and the gap width decreases due to the hydrodynamic effect acting on the aggregates. The size distributions of the aggregates become narrow as the gap width decreases. In addition, the fractal dimension, i.e., the structure of the aggregates, was almost independent of shear rate and the gap width, and approximately 1.2, which suggests that the aggregates are relatively compact.

  18. Investigation of relationship between flow pattern and phase separation structure in a liquid mixture layer using EHD convecttion

    HOZAWA Mitsunori, TSUKADA Takao

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

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

    Institution: Tohoku University

    2002 - 2003

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    We have investigated the relationship between the flow pattern based on electrohydrodynamic (EHD) convection and phase separation structure in a polymer blend film. In the present study, the solvent evaporation and thermal quench of polymer blend solutions were adopted to induce the phase separation in the film. In the former method, we have investigated the effect of EHD convection on the domain structure in a polystyrene (PS)/polyvinylacetate (PVA) blend film to demonstrate the feasibility of using the EHD effect as a means of mixing and morphology control in a polymer blend film. Here, polymers-toluene solutions were spread on a glass substrate with patterned electrodes to apply a dc electric field, and well-defined structures of EHD convection were formed in the polymer solutions. As a result, regular patterns were formed in the PS/PVA polymer blend him in which PVA-rich domains were confined within each unit of patterned electrodes, i.e.,between positive and negative electrodes, at an appropriate electric voltage. Also, it was demonstrated that such novel morphology are not due to the wetting/dewetting effect of polymer components to the Pt electrodes deposited on the glass substrate, by experiments with a SiO_2-covered substrate. In the later case, since we had some problems in the experimental apparatus and procedure, unfortunately we could not obtain the available results. In addition, we have developed the numerical simulation code of the phase separation based on the Cahn-Hilliard model with a hydrodynamic effect, and then clarified the effects of the capillary force, gravity force and temperature gradient on the phase separation structure.

  19. Phase-separation behavior in a binary mixture fluid layer subjected to a vertical temperature gradient

    TSUKADA Takao, KOBAYASHI Masaki, HOZAWA Mitsunori

    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

    2001 - 2002

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    The phase separation behaviors in a layer of isobutyric acid (IBA)-water binary mixture were experimentally investigated, where the layer with 3 mm thickness was sandwiched between two sapphire glasses and was subjected to a vertical temperature gradient by keeping the lower hot side temperature T_b above the critical temperature T_c and keeping the upper cold side one T_t below the critical one. The following conclusions were obtained. 1. The patterns characterized by a polygonal cell including one droplet, similar to those observed by Assenheimer, Khaykovich & Steinberg (1994) whose layers were thinner than the present ones, are formed in a limited region of temperature gradients across the layer, although the patterns finally disappear. 2. The growth rate of the phase-separated droplets increases with temperature gradient ΔT/d, especially increases rapidly beyond 1.7K/mm. In addition, the growth rate increases with increasing of τ(=(T_tT_c)/T_c). These trends were also observed for the extinction rate of the droplets. 3. The formation of the polygonal cellular patterns including one droplet is attributed to the thermocapillary motion along the droplet surface, i.e., Marangoni convection. 4. The growth of the phase-separated droplets is enhanced by the concentration-driven Rayleigh convection in the layer. 5. The extinction of the phase-separated droplets is enhanced by the thermocapillary motion along the droplet surface.

  20. Effective Air Separation Applied to Low Emission Energy System

    MARUYAMA Shigenao, TSUKADA Takao, KOBAYASHI Hideaki, KAMIJO kenjiro, FUJIMA Katsumi, OIKE Mamoru

    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

    2000 - 2002

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    Improvement of a cryogenic air separation system combined with O_2/CO_2 combustion process are Studied. An improved air separation process for O_2/CO_2 combustion plant is proposed and simulated. A conventional cryogenic air separation plant loses much exergy in the air compression process. One of the methods to reduce energy consumption in the air compression process is to adopt a single rectification column instead of a double rectification column. The single column process is possible to operate at lower pressure. In result, the energy consumption for O_2 production is reduced by 14% compared with the double column process. One of the other methods to reduce the energy consumption for air separation is utilizing cold exergy of LNG for the air separation process in a LNG fired power plant. We proposed a novel process to utilize the LNG cold exergy for the air separation, and simulated. The low temperature compression of air is performed to reduce the energy consumption. The LNG cold exergy is utilized at low temperature to increase the efficiency of cold exergy. The energy consumption for O_2 production is reduced by 40.7% compared with the conventional one, and the efficiency of LNG cold exergy becomes 57.3%. Improvement of performance in a cryogenic heat exchanger is necessary to reduce the energy consumption. A fibrous media heat exchanger in proposed, which has large heat transfer area. Experiments and numerical simulations are performed to estimate the performance of the heat exchanger in cryogenic operation. The fibrous media heat exchanger has higher thermal efficiency than conventional packed beds regenerators, when the heat exchanger length is short. Effect of frost deposition caused by water vapor in the air is estimated for continuous operation. The frost deposition occurs where the temperature gradient is large, and the amount of frost increases linearly to the operating time.

  21. EHD対流を利用した非相溶性ポリマーブレンド膜のモルフォロジー制御

    寳澤 光紀, 小林 正樹, 塚田 隆夫

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 萌芽的研究

    Institution: 東北大学

    2000 - 2001

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    本研究の目的は、ガラス基板上の電極形状に依存してポリマーブレンド溶液層内部に発現する電気流体力学的(EHD)対流の様々な対流構造を利用し、キャスト法により製膜されるポリマーブレンド膜の凝集構造形態(モルフォロジー)の制御を行おうとするものである。 本年度は、polystyrene(PS)/poly(vinylacetate)(PVAc)/toluene系を対象とし、以下の点を明らかにした。 1)理論的検討 実験に先立ち、種々の条件におけるEHD対流の構造を予測するために、溶媒蒸発を伴わない均一系におけるEHD対流の三次元解析を行った。その結果、EHD対流は規則的、周期的な電極形状の1ユニットに拘束され、液膜が厚い場合は深さ方向の循環流、液膜が薄い場合は水平方向の循環流となることがわかった。また、印加電圧を変化させた場合、対流強度は変化するものの、対流構造に大きな変化は見られなかった。 2)実験的検討 電場を印加せずに溶媒を蒸発させた場合、最終的な相分離構造はPVAc-rich相の細かい液滴が系全体で一様に分散した構造となった。また、初期液膜厚さが減少するにつれ分散液滴の大きさは小さくなることがわかった。 一方、ガラス基板上に規則的、周期的形状を有する電極を形成し、その上にポリマーブレンド溶液を展開して直流電場を印加すると、液膜内に電極形状に拘束された規則的なEHD対流が発生し、対流構造の膜厚依存性は前述の数値シミュレーション結果と一致した。また、EHD対流によって液膜内が局所的に撹拌・混合されるため、最終的にPVAc-rich相のマクロなドメインが電極形状に拘束されて規則的に並んだ相分離構造が得られ、そのドメインの面積及び形状は印加電圧や初期液膜厚さによって変化することがわかった。

  22. Experimental and Theoretical Studies on Particle Dynamics in Chemical Mechanical Polishing (CMP) Process

    HOZAWA Mitsunori, KUBO Masaki, TSUKADA Takao

    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

    1999 - 2001

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    Since the slurries used in the CMP process contain several chemical additives, under certain conditions, the particles in the slurries may aggregate and adhere to the wafer and/or pad surfaces before and during the polishing process. Such aggregations result in defects such as scratches on the wafer surface. Therefore, for performance of good local and global planarity without failures, it is important to determine the optimal conditions for preparation of stabilized slurries without aggregations. In addition, the acquirement of correct knowledge about the size and shape of aggregates during the process, i.e., the aggregation and breakage behaviors of particles in a confined shear flow between the wafer and the pad, is also a critical issue. The aim of the present work is to investigate experimentally and theoretically the particle dynamics in a simple shear flow confined between the two parallel walls. We developed an experimental apparatus with a confocal scanning laser microscope for in-situ observation of the particle dynamics in a shear flow between two parallel disks. In experiment, polystyrene particles of 2μm in diameter were suspended in a NaCl aqueous solution. We could observed the rotational behavior of aggregates in a shear flow. As a result, it was found that lower shear rate results in larger size of aggregates. In addition, as the distance between two disks increased, the average area of aggregates increased. We constructed a mathematical model for particle aggregation process in a shear flow. In this model, we considered the hydrodynamic drag, the interaction between particle and particle, and particle and wall, and colloidal interactions. As the distance between two parallel walls increased, the size of aggregates increased and the number of aggregates contacted with wall decreased. When the colloidal interaction between particle and wall was smaller than that between particle and particle, the size of aggregates increased and the number of aggregates contacted with wall decreased.

  23. Optimization of Manufacturing Process of Waveguides on Nonlinear Optical Polymer film

    TSUKADA Takao, KUBO Masaki, HOZAWA Mitsunori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

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

    Institution: Tohoku University

    1999 - 2000

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    Numerical simulations of the manufacturing of waveguides with grating patterns on a nonlinear optical (NLO) polymer film using photothermal poling were carried out The mathematical model was constructed, in which spatial and temporal variations of molecular dipoles during heating with a focused laser beam and electrical poling were considered. The effects of operational factors, i.e., laser power, beam diameter, moving speed of a sample, and electric field strength, on the grating configuration were investigated. As a result, the following guidelines for producing a waveguide with high performance were obtained : the laser beam wavelength should be selected so as to heat uniformly throughout the thickness of the polymer film, the laser power should be as high as possible without causing large deformation in the film, the laser beam diameter should be smaller than half period of the grating, the moving speed of the stage should be slow, and the electric field strength should be as high as possible, if dielectric breakdown is to be avoided. In addition, measurements of the rotational diffusion coefficient and the thermal diffusivity of poly (methyl methacrylate) with Disperse Red 1 (DR1) chromophore side groups were carried out.

  24. Relationship between the structure and thermophysical property of a starch-synthetic polymer composite under heated and pressurized conditions

    TSUKADA Takao, HOZAWA Mitsunori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

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

    Institution: Tohoku University

    1997 - 1998

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    Use of agriculturally derived products such as starch and replacement for totally synthetic polymers reduce our dependence on petrochemically derived monomers, and are currently an active research area because of the biodegradability of these plant-derived materials, It is important to acquire the fundamental data such as the thermophysical properties for the design and optimization of the apparatus to produce such materials, In the present work, the thermal conductivity of a starch-synthetic polymer composite was measured under heated and pressurized conditions, and the following conclusions were obtained. 1) Development of the probe to measure thermal conductivity of the material The probe for thermal conductivity measurement of food materials under heated (- 150ﾟC) and pressurized conditions (-20MPa) has been developed, being based on the transient hot wire method. 2) Thermal conductivity measurement of starch gel After the validity of the data measured using the probe was verified by comparison with published data of water, the thermal conductivity of gelatinized potato starches was determined at 25-80ﾟC, 50-80 % moisture, and 0.2-10 MPa. It was found that the thermal conductivity of the starch gel increases with temperature and moisture content, and that it increases with pressure up to I MPa, above which it remains almost constant. The pressure dependency can be justified by considering the presence of entrapped fine air bubbles which could have penetrated into the sample during the preparation process. 3) Thermal conductivity measurement of starch-synthetic polymer composite The thermal conductivity of starch-graft-poly(methylacrylate), which was prepared by ceric ammoniumnitrate-initiated polymerization of methylacrylate onto granular corn starch, was determined at 20-80ﾟC, 7-35%moisture and 0.2-8 MPa. It was found that the thermal conductivity increases with temperature and moisture content, although the temperature dependency is so small. Also, the thermal conductivity increases with pressure due to the same reason as 2).

  25. Analysis and control of heat transfer in laser induced thermal poling process of polymer thin film

    HOZAWA Mitsunori, TSUKADA Takao, OIKAWA Hidetoshi

    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

    1997 - 1998

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    We have focused on the development and the optimization of waveguide patterning process in nonlinear optical (NLO) polymer thin film by laser induced thermal poling. In this research, we have elucidated the following subjects. 1) Measurement of the thermal diffusivity of NLO polymer thin film. Thermal properties of NW polymer are an important factor in the thermal poling process. To measure the thermal diffusivity of the nonlinear optical (NW) polymer thin film, we modified the experimental apparatus based on the photoacoustic method. PMMA with DR1 chromosphore side groups was synthesized as an NLO polymer. It was found that the thermal diffusivity is independent on film thickness and percentage of the chromosphore, but increases as the applied electric field increases. Also, the thermal diffusivity of the NLO polymer thin film decreases with temperature. Our apparatus has no capability to measure at high temperature, more than glass transition temperature (about 380K) which gives abruptly change in thermal diffusivity, It is desired to develop another method to measure thermal diffusivity at high temperature. 2) Numerical simulation of laser induced thermal poling process We have constructed three-dimensional simulation code to estimate temperature profile in NW polymer thin) film on thermal poling process. To elucidate optimized condition for uniform polarization profiles, we introduced the temperature dependence of dipole (in NLO molecule) orientation dynamics to our simulation code. Since there is no available model for dipole orientation dynamics, relaxation dynamics model was used. At first, Ar^+ laser (wavelength of 488 nm) was used as light source on simulation. The calculation results showed that smaller diameter of laser beam and slower scanning speed of laser give more uniform polarization profiles. Since absorption spectrum of thin film suggests that He-Ne laser (wavelength of 632 nm) illuminates the thin film more interior than Ar^+ laser, He-Ne laser results in higher and more uniform polarization profiles. It is necessary to measure the dipole orientation dynamics for polymer materials in an electric field.

  26. CHEMICAL ENGINEERING ANALYSIS AND CONTROL OF GROWTH PROCESS OF BULK SINGLE CRYSTALS FOR OPTO-ELECTRONICS DEVICES

    IMAISHI Nobuyuki, HOSHIKAWA Keigo, KUMAGAWA Masasi, TSUKADA Takao, HIRATA Akira, OZOE Hiroyuki

    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: KYUSHU UNIVERSITY

    1995 - 1997

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    This project aimed to establish scientific fundamentals of bulk single crystal growth for opto-electronics devices. Czochralski process for semiconductor and oxide crystals have been analyzed experimentally and numerically. Gas phase transport phenomena was numerically investigated and a device was proposed to increase mass transfer rate of SiO.Fluid flow and heat transfer in melt pool was numerically analyzed and the application of magnetic field was revealed effective to control the oscillatory melt flows. Effect of buoyancy and thermocapillary forces on melt flow of compound semiconductors was analyzed experimentally and numerically. Thermal stress analysis and dislocation kinetic model was combined to predict dislocation density in semiconductor single crystals. Global analysis code was developed for a RF heated Czochralski furnace for oxide crystal growth. The code has been effectively used to optimize the structure and operation of the furnace. The temperature distributions thus obtained was used to thermal-stress and crack formation analyzes. Thermo-physical properties of some oxide melts have been measured.

  27. STUDY ON DESALINATION PROCESS USING LIQUID MEMBRANE

    HOZAWA Mitsunori, SATO Masahide, SHONO Atsushi, TSUKADA Takao

    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

    1995 - 1996

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    For the establishment of the novel desalination system in the downstream processing of biochemical products, the following two apparatus using the liquid membrane system were developed in the present work and their characteristics were investigated experimentally. In the design of the apparatus for the desalination, it is important to contact the two kinds of W/O emulsions to extract the cation and anion with the feed solution, preventing the emulsions from contacting each other. Apparatus (1) : The hollow fibers, through which the two kinds of W/O emulsions were separately passed, were put in the stirred cell including the feed solution. Apparatus (2) : The stirred cells including the two kinds of W/O emulsions respectively were separated by the partition through which the feed solution can pass but each emulsion can not. As a result, the apparatus (1) was not available for the desalination system because it is difficult to keep the interface between the emulsion phase and the feed solution in the pore of the hollow fiber adjusting the inner and outer pressures of the fiber. While, in the apparatu (2), it was found that the two stainless steel meshes which were coated by the fluorine-contained polymers and piled at intervals of 5 mm are useful as the partition to separate the emulsions. Also, the collision rate of emulsions to the partition is one of the important factors to control the leakage of the emulsions, and we can accomplish to transfer only the ions by adjusting the dispersion conditions of emulsions and the volume ratio of emultions to that of the feed solution.

  28. 溶融食品材料の急縮小流れに及ぼす諸因子の影響

    宝沢 光紀, ブバナスンダラム カナチ, 塚田 隆夫

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 一般研究(C)

    Institution: 東北大学

    1995 - 1995

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    機能性食品素材の製造を目的として、澱粉あるいは蛋白を主成分とする食品材料の高温・高圧処理技術、特にエクストルーダーを利用した食品押し出し加工技術が注目されている。この技術は、既に実用化され様々な分野で利用されているが、材料の輸送物性あるいは流動、伝熱といった装置内輸送現象が加工中の材料の化学的、物理的変化に影響を受けるため複雑であり、まだ経験に依存するところが多く、普遍的なプロセスの設計指針は確立されていない。本研究では、エクストルーダー内部の滞留時間分布や剪断、ひいては製品の組織制御に重要な影響を及ぼすダイ入口周辺部の流動状態を把握するための基礎研究として、溶融食品材料の急縮小管内流動に関し、数値シミュレーション及び実験の両側面から検討することを目的とする。 今年度は、溶融食品材料の急縮小管内流動を解析するための数値シミュレーションコードの開発を目的として、まずニュートン流体に関するシミュレーションコードの開発を行った。さらに、本課題に関連する既住の研究の調査より、溶融蛋白、例えば溶融大豆蛋白の流動特性が非ニュートン流体、特に含水率が41%以上では指数則流体(擬塑性流体)、それ以下では複雑な(通常の非ニュートン流体モデルでは表現できない)流動特性を示すことが分かったので、第2ステップとしてこの実験結果に基づき、指数則流体の急縮小管内流動に関する数値シミュレーションコードの開発を行い、管内流動に及ぼす流動指数の影響について数値的に検討した。今後は、今年度開発したシミュレーションコードを広範な含水率の食品材料に適用できるように拡張するため、低含水率の実験結果が示す流動特性のモデル化、さらには実験を行うことにより実際の管内流動状態との比較検討を行う予定である。

  29. Micro- and macro-modeling of solidification process

    OHNAKA Itsuo, NAKAYAMA Wataru, TSUKADA Takao, HAYASHI Yuziro, NAGASHIMA Akira

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Priority Areas

    Institution: OSAKA UNIVERSITY

    1993 - 1995

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    Nagashima's groups has proposed a new method to measure diffusion coefficient and viscosity change near melting temperature, which is difficult to measure with conventional methods. This method uses Rayleigh scattering and Brownian motion of fine particles dispersed in melt. The possibility has been demonstrated for molten KNO_3 and NaNO_3. The data showed the difference between the maximum and minimum viscosity increases near the melting temperature reflecting liquid structure change. Ohnaka's group has made clear the growth mechanism of an organic materials-system which has the similar phase diagram of oxide high temperature superconductors, and developed a micro-model, which can simulate the growth phenomena. Further, they have proposed a new mechanism for particle engulfment at the solid/liquid interface. Hayashi's group has developed a kinetic theory considering microstructure and solidification phenomena for non-facetted free dendritic growth in undercooled liquid and also for the growth near a cooled wall accompanying temperature relaxation and solid phase coarsening. The theory was based on their experimental work on the solidification of Bi-Sn alloy. Tsukada's group has revealed the relationship between growth condition (furnace structure and transport phenomena including thermal stress in crystals) and crystal quality especially micro-cracks for oxide single crystal growth by the CZ method. This work in based on numerical simulation and experimental observation of growth of LiNbO_3 single crystal. Finally, Nakayama's group has made it possible to investigate quantitatively the miniaturization of leads required in three dimensional electric circuits. Namely they developed a method to analyze the solidification process of elongating thin molten alloys and validated their method with experimental works. These works have made more clear the necessity of the micro- and macro-modeling and their combination to improve new materials and devices by using various solidification processes, and some new modeling methods have been developed.

  30. 有機薄膜のモルフォロジーと薄膜作製時に発生する膜内対流構造との相関

    塚田 隆夫, 宝沢 光紀

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 一般研究(C)

    Institution: 東北大学

    1994 - 1994

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    キャスト法あるいは回転塗布法といったウエットプロセスによる有機(高分子)薄膜作製法では、揮発性の溶媒に溶かした薄膜材料を、基板に塗布し、溶媒を自然にあるいは回転乾燥することにより薄膜化を行う。これら乾燥プロセスの際には、液膜内に急峻な温度勾配あるいは濃度勾配が発生し、条件によっては、マラカゴニ効果に基ずく不安定性により対流が発生する可能性があり、有機薄膜形成過程が非常に速い場合、膜内に発生したこの対流の空間構造が凍結され、薄膜のモルフォロジーに影響を与える可能性がある。本研究では、有機薄膜作製時におけるマランゴニ不安定に基づく対流の発生の可能性を探究すべく、高分子溶液の表面張力測定、線形安定性理論による検討を行うと共に、実際に回転塗布法による有機薄膜の作製を試みた。 高分子溶液の表面張力を測定するに当たり、滴重法に基づく測定装置を自作した。なお、装置は温度制御(25℃)に加え、高分子溶液が揮発性であることから、周囲雰囲気が飽和蒸気圧に維持さけるよう制御した。対象とした高分子溶液は、PMMA(ポリメタクリル酸メチル)のモノクロロベンゼン溶液である。測定の結果、PMMA濃度(C=0〜10wt%)の増加に伴い、表面張力(σ)は減少する(dσ/dC<0)傾向を示した。この関係を線形安定性理論に適用すると、本系はマランゴニ的には安定な糸となる。従って、PMMA-モノクロロベンゼン系においては、マランゴニ不安定に基づく対流の発生の可能性が無いことが分かった。これを確認するために、現在回転塗布法により実際に薄膜作製を試みている。 しかし、回転塗布法による有機薄膜の作製時に、基板の回転数が小さい場合、凹凸の表面を有する薄膜が形成されると報告があり、上記機構以外の膜内対流によることも考えられ、様々な系に関して今後実験及び理論の両側面から更に検討を行う必要があると考えている。

  31. マランゴニ効果によるCO_2のガス吸収促進現象の可視化と機構解明の研究

    宝沢 光紀, DMITRIEVICH O.A., 塚田 隆夫

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 一般研究(C)

    Institution: 東北大学

    1993 - 1993

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    本研究は地球温暖化の原因物質とされているCO_2のガス吸収速度に及ぼすマランゴニ効果の影響を検討することを目的としている。 実験において,溶媒として14種の有機化合物を用いた。実験には静止液相円筒型セルを用い,これにガス吸収の場合は溶媒を飽和したCO_2ガスを送入し,また放散の場合は予めCO_2で溶媒を飽和させた後,この溶液にN_2ガスを送入した。吸収,放散時の液相内の拡散と流動の状態をレンズシュリーレン法で可視化し,その映像を写真またはビデオに記録した。表面張力はウィルヘルミー法でまた密度はピクノメーターを用いて測定した。 実験結果について述べる。観察された流れを次の5種に分類した。I.プルーム状の密度対流による下降流,II.浮力支配の上昇流,S.動的な層を形成する流れ,T.界面攪乱C.対称遠心状流れ。 CO_2のガス吸収時には次のような現象が観察された。吸収による溶液の密度変化Δρが正の系についてはI・Cタイプの流れが観察された。またΔρが負の系についてはII・Cタイプの流れが観察された。吸収と同時に溶媒の蒸発が起こると界面攪乱が発生し,物質移動を促進させることがわかった。バブリングによるCO_2ガスの溶媒飽和は完全に行うことが難しく今後実験を行う際に十分注意する必要があることが明らかとなった。 CO_2ガスを溶液から放散させる場合にはマランゴニ不安定となり,ベンゼンを溶媒とする場合には界面攪乱が発生することが明らかにされた。これは新しい知見である。

  32. 高温・高圧下における食品タンパク質の熱伝導率の測定

    塚田 隆夫, 宝沢 光紀

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 一般研究(C)

    Institution: 東北大学

    1992 - 1992

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    天然高分子である澱粉あるいはタンパク質から成る食品材料は、加熱あるいは加圧操作によって変性し、その分子構造に変化を生じ、これに伴いその熱物性値も変化することが予想される。本研究は、食品加工装置の設計において重要と考えられる食品材料の構造変化とその熱物性値との相関を明らかにすることを最終目的とし、食品タンパク質の熱伝導率を対象として、広範な温度及び圧力下で測定可能な熱伝導率測定装置の作製を試みた。なお、熱伝導率の測定原理は、Pt細線を用いた非定常細線法によるものとした。 熱伝導率測定装置の試作に当り、(1)高温・高圧用の試料セルの作成、(2)これに設置する細線プローブの作製及び(3)計測制御システムの構築を行った。(1)については、温度が室温〜200℃、圧力が常圧〜15MPaまで測定可能なセルを作製した。(3)についてもほぼ完成した。一方、(2)については、本研究で対象とする(低含水率の)食品タクパク質は、常温常圧下では粉体状、一方高温高圧下では溶融状態となることが予想されるので、これらの状態変化に対応できるような細線プローブを開発する必要があった。研究開始当初は試料挿入型(シース型熱電対に近い形)の測定プローブの作製を試みたが、細線径、強度等の問題から、本研究の要求を満たすものが作製できず断念した。そこで、次に熱伝導率既知の基板上に細線をフォトリソグラフィー並びに蒸着法により形成し測定プローブとする方法を試みた。細線の形成条件を種々変えて試みた結果、この方法により本研究の要求を満たすプローブの作製が可能であること並びに大体の作製条件を見い出すことができた。 今後はこの方法により、最適な細線プローブを作製し、これを用いた食品タンパク質の熱伝導率測定を行う予定である。

  33. Study on Heat and Mass Transfer in the Magnetic Fields Applied Czochralski Method

    FUKUDA Tsuguo, TSUKADA Takao, HOZAWA Mitsunori, OKANO Yasunori, HOSHIKAWA Keigo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

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

    Institution: Tohoku University

    1990 - 1991

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    1. Effects of applied magnetic field on convection in melt : Temperature distributions on the melt surface under the conditions with or without magnetic fields were observed by the thermoviewer system. As increasing strength of the applied magnetic field, dominant heat transfer in the melt changed from convective transfer to conductive one. A remote sensing system for convective phenomena under the applied magnetic field conditions was developed. We successfully estimated very weak convection, which could not be observed on the melt surface, by using this method. 2. Control of mass transfer by applied magnetic field : A mechanism of oxygen transfer during silicon crystal growth by Czochralski method was clarified. A new magnetic field applied system, Cusp magnetic field, was developed and applied to silicon crystal growth by Czochralski method. We could control the oxygen concentration in the grown crystal with uniform distribution of oxygen along the growth direction and in the wafer. 3. Development of strong magnetic field applied system : A vertical Bridgeman with strong magnetic field up to 80, 000 Gauss available was developed.

  34. 引上げ法による単結晶育成時の流動ならびに伝熱特性に関する研究

    塚田 隆夫

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 一般研究(C)

    Institution: 東北大学

    1986 - 1987

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    単結晶育成時の融液、結晶内の温度場、流れ場を推測する手段として計算機シミュレーションとシミュレーション実験があるが、本年度は主に計算機シミュレーションを行った。即ち、擬定常、軸対称の仮定のもとで連続式、Navier-Stokes方程式及びエネルギー方程式を解くことにより速度、温度場を、固液界面での温度条件、Young-Laplace式より固液界面、融液自由表面形状を求めた。尚解析手法にはガラーキン有限要素法を用いた。ここではシリコンを対象とし、様々な操作条件下(結晶,るつぼの回転,るつぼ壁温)で数値解析を行った。得られた数値解析結果は比較的小さな結晶径の場合に限られるが融液自由表面,固液界面形状も含め、融液,結晶内部の温度分布及び速度分布を予測できるものと考えられ、特に育成時マランゴニー効果あるいは融液自由表面形状の流れ場に及ぼす影響が大きいことがわかった。また、実操作において固液界面形状をできる限り平担にするための一手段として炉内への輻射熱遮蔽体の挿入を考え、熱伝導支配の仮定のもとで結晶、融液内の温度場を解析することにより、界面形状に及ぼす遮蔽体の影響を検討した。尚、この場合の対象もシリコンである。その結果、遮蔽体の形状あるいは挿入位置を適切に選択すると固液界面形状をかなり平坦に近くできることがわかった。シミュレーション実験については現在装置を作製中であり、今後この装置を用いて、結晶、るつぼの回転速度あるいはるつぼ壁と結晶の温度差を変えることにより共存対流域でのモデル流体中の流れ及び伝熱状態を明らかにする予定である。

  35. 非劣化性支持液膜の実用装置の開発

    藤縄 勝彦, 塚田 隆夫, 今石 宣之, 宝沢 光紀

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 試験研究

    Institution: 東北大学

    1986 - 1986

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    支持液膜を実用化するに際しての最大の問題点である液膜の劣化の主原因は支持体に含浸させた抽出剤の溶出である。本研究では溶解度の比較的大きな抽出剤にも適用できる非劣化性支持液膜(長寿命液膜)を開発した。その原理は支持体として不織布を裏打ちしたラミネート膜を用い、膜の一端を膜液に浸すことにある。尚膜液は消費された分だけ適当に補給する。この支持液膜を秋田県小坂の同和鉱業で稼動しているGa,Inの湿式製錬プロセスに応用した。このプロセスには三つの抽出,逆抽出工程がある。第1段階はGa,InのVersatic酸を用いた予備濃縮工程,第2,3段階はIPE(イソプロピルエーテル)及びTBP(りん酸トリブチル)によるGa,Inの分離,回収工程である。TBP,IPEは従来液膜に使われていたLIX 64Nなどの百〜一万倍も溶解度が大きく、安定な支持液膜は作れないと考えられていた。本研究では、まずTBPによるInの抽出を長寿命支持液膜を用いて行ったところ膜液の補給がなければ60時間で膜破壊が起こるのに対して、100%TBPを0.3【cm^3】/hr補給するだけで200時間以上劣化しない液膜を実現できた。さらにこの方法をTBPより200倍も溶解度の大きいIPEにも適用した。その結果IPEの場合n-ドデカンのような膜補剤を膜液に添加し、膜液補給速度を増加させることにより200時間以上Gaの流束を一定に保つことができた。GaやInの流束に及ぼす被抽出液側金属濃度の影響を調べ、実プロセスに必要な膜長を計算したところ、Ga-IPE系,In-TBP系の双方について約4mとなり十分実用可能なことがわかった。また第一段階の濃縮工程にも支持液膜の応用を検討したが、この場合は抽出試薬としてVersatic酸よりα-プロモデカン酸が優れていることが明らかとなった。しかしそれでも抽出速度が小さいのでこの工程には乳化液膜法を適用する方が実用的である。

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Social Activities 6

  1. 講習会「泡発生のメカニズムと制御法およびトラブル対策」（主催：（株）日本テクノセンター）

    2009/05/07 -

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    講習会の講師として講演する。

  2. 講習会「泡の発生メカニズムとその評価および消泡・脱泡技術」（主催：(株)Ｒ＆Ｄ支援センター）

    2009/02/27 -

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    講習会の講師として講演する。

  3. 講習会「泡の発生メカニズムとその制御・消泡・脱泡技術について」（主催：株式会社 産業科学システムズ）

    2009/01/20 -

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    講習会の講師として講演する。

  4. セミナー「泡の発生メカニズム解析と消泡・脱泡技術」（主催：（株）技術情報協会）

    2008/09/17 -

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    セミナーの講師として講演する。

  5. セミナー「気泡の発生・運動とその測定および消泡・脱泡技術入門」（主催：株）テクノシステム）

    2008/09/03 -

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    セミナーの講師として講演する。

  6. 講習会「泡の基礎・メカニズムと起泡・消泡テクニック」（主催：（株）情報機構）

    2008/06/10 -

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    講習会の講師として講演する。

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  1. 高度ものづくり支援―超高温熱物性計測システムの開発

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    電磁浮遊法に静磁場を重畳することによって液滴の振動及び対流を抑制かつ制御し，高温浮遊液滴の熱伝導率，比熱，放射率，密度，表面張力を測定する要素技術を確立し，各要素技術を高温融体の物性計測システムとして一つにまとめたプロト機を製作する。

  2. 単結晶成長炉内の輸送現象と結晶欠陥との相関

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    本研究は、工業的に利用されているCZ炉に関して、融液内対流、固液界面近傍の熱拡散場、固液界面形状、さらには固液界面上の局所結晶成長速度や不純物濃度の時空間変動を解析するための手法を確立し、操作条件⇔融液内熱拡散場の時空間変動⇔結晶の欠陥の相関を明らかにする。

  3. ナノ粒子分散高分子薄膜の塗膜欠陥形成過程の精密解析

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    本研究では、シリコン基板に塗布したコンポジット薄膜のアニーリング操作に伴うdewetting現象の発生・成長過程のその場観察を行い、dewetting現象に及ぼすナノ粒子の存在の影響を実験的に検討する。

  4. 酸化物・フッ化物単結晶成長プロセスの革新的シミュレーション技術の確立

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    チョクラルスキー（CZ）法による酸化物単結晶成長プロセスを対象とし、融液内対流の３次元非定常性を考慮した総合熱解析手法を開発し、固液界面形状等に及ぼす操作条件の影響を検討する。

  5. 不均一温度・濃度場において発現する対流パターンと相分離構造との相関

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    本研究の目的は、重力効果に加えて、2成分混合液膜層内に温度勾配、初期濃度勾配、さらにはこれら分布に起因して発現するマクロスケールの対流が存在する場合の相分離過程・構造を系統的に検討することである。ここでは、この目的を達成するために、1) 相分離現象及び対流パターンのその場観察実験、並びに2) 温度勾配及び初期濃度勾配共存下での相分離現象の数値シミュレーションを行う。