TOKUMASU Takashi

J-GLOBAL         Last updated: Feb 15, 2019 at 14:06
 
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Name
TOKUMASU Takashi
E-mail
tokumasuifs.tohoku.ac.jp
URL
http://db.tohoku.ac.jp/whois/e_detail/313943011a32d81be5c4819d700450ed.html
Affiliation
Tohoku University
Section
Institute of Fluid Science Nanoscale Flow Research Division Quantum Nanoscale Flow Systems Laboratory
Job title
Professor

Research Areas

 
 

Academic & Professional Experience

 
Apr 2017
 - 
Today
Professor, Institute of Fluid Science, Tohoku University
 
Apr 2007
 - 
Mar 2017
Associate Professor, Institute of Fluid Science, Tohoku University
 
Dec 2005
 - 
Mar 2007
Associate Professor, Institute of Fluid Science, Tohoku University
 
Apr 2003
 - 
Nov 2005
Lecturer, Institute of Fluid Science, Tohoku University
 
Apr 1999
 - 
Mar 2003
Research Associate, Institute of Fluid Science, Tohoku University
 

Education

 
 
 - 
Mar 1998
Mechanical Engineering, Graduate School, Division of Engineering, The University of Tokyo
 
 
 - 
Mar 1992
Machenical Engineering, Faculty of Engineering, The University of Tokyo
 

Committee Memberships

 
Apr 2010
 - 
Mar 2011
日本機械学会  流体工学部門表彰委員会 幹事
 
Apr 2009
 - 
Mar 2010
日本機械学会  流体工学部門表彰委員会
 
Apr 2002
 - 
Mar 2010
日本航空宇宙学会  北部支部幹事
 
Apr 2008
 - 
Mar 2009
日本機械学会熱工学部門学会賞委員会  幹事
 
Apr 2007
 - 
Mar 2008
日本機械学会  校閲委員
 

Awards & Honors

 
Oct 2016
分子動力学法を用いた高分子電解質膜内におけるプロトン輸送現象の解析, Presentation Award, Thermal Engineering Division, Japan Society of Mechanical Engineering
 
Nov 2013
Certificate of Merit of Contribution, Fluid Engineering Division, Japan Society of Mechanical Engineering
 
May 2000
日本機械学会奨励賞(研究), 日本機械学会
 

Published Papers

 
Relationship between Proton Transport and Morphology of Perfluorosulfonic Acid Membranes: A Reactive Molecular Dynamics Approach
Takuya Mabuchi and Takashi Tokumasu
the Journal of Physical Chemistry B   122 5922-5932   2018   [Refereed]
Validation of Classica Mixing Rule Coupled with a Van der Waals-type Equation of State for Supercritical Mixture System of Oxygen and Hydrogen using Molecular Simulation
Ryuji Takahashi, Nobuyuki Tsuboi, Takashi Tokumasu and Shin-ichi Tsuda
Mechanical Engineering Letters   4 18-00369   2018   [Refereed]
Scattering Properties of Gas Molecules on Water Adsorbed Surfaces in High Knudsen Number Flows
Naoya Uene, Hideki Takeuchi, Yasutaka Hayamizu and Takashi Tokumasu
Proc. 21st Australasian Fluid Mechanics Conference   11C-5   2018   [Refereed]
Kinetic Analysis of Oxygen Transport Phenomena through Ionomer Thin Film on Pt Surface in PEFC
Yuya Kurihara, Takuya Mabuchi and Takashi Tokumasu
ECS Transactions   86(13) 489-496   2018   [Refereed]
Molecular Dynamics Study of the Thickness Dependence of Structure and Mass Transport in Ionomer Thin Film
Koichi Kobayashi, Takuya Mabuchi, Gen Inoue and Takashi Tokumasu
ECS Transactions   86(13) 469-474   2018   [Refereed]
Theoretical Study of High Performance Hydrocarbon-based Ion-exchange Membranes
Akinori Fukushima, Hironori Sakai and Takashi Tokumasu
Computational and Theoretical Chemistry   1121 44-48   2017   [Refereed]
Exploring the Performance of Dual-Phase Oxygen Transport Membranes for Carbon Capture Purposes
Ryan Falkenstein-Smith, Matthew Rushby, Hiroki Nagashima, Takashi Tokumasu and Jeongmin Ahn
Journal of Fluid Science and Technology   12 17-00430   2017   [Refereed]
Modeling of Local Gas Transport in Catalyst Layers on PEM Fuel Cells
Tetsuya Mashio, Hiroshi Iden, Atsushi Ohma and Takashi Tokumasu
Journal of Electroanalytical Chemistry   79 27-39   2017   [Refereed]
Dependence of Electroosmosis on Polymer Structure in Proton Exchange Membranes
Takuya Mabuchi and Takashi Tokumasu
Mechanical Engineering Journal   4 17-00054   2017   [Refereed]
Molecular Analysis of Structural Effect of Ionomer on Oxygen Permeation Properties in PEFC
Yuya Kurihara, Takuya Mabuchi and Takashi Tokumasu
Journal of the Electrochemical Society   164 F627-F637   2017   [Refereed]
A Molecular Dynamics Study of Nuclear Quantum Effect on Diffusivity of Hydrogen Molecule
Hiroki Nagashima, Shin-ichi Tsuda, Nobuyuki Tsuboi, A. Koichi Hayashi and Takashi Tokumasu
Journal of Chemical Physics   147 24501   2017   [Refereed]
Molecular Dynamics Study of Ionomer Dispersions in Water/Alcohol Mixtures
Takuya Mabuchi and Takashi Tokumasu
Extended Abstracts of the Ninth JSME-KSME Thermal and Fluids Engineering Conference,   TFEC9(1653)    2017   [Refereed]
Channel Size Dependence of the Friction Force around the Contact Line Region
Akinori Fukushima and Takashi Tokumasu
Extended Abstracts of the Ninth JSME-KSME Thermal and Fluids Engineering Conference   TFEC9(1473)    2017   [Refereed]
Validation of Classical Mixing Rule Coupled with a Cubic Equation of State for the Thermodynamic Properties in Oxygen – Hydrogen Mixture System
Ryuji Takahashi, Nobuyuki Tsuboi, Takashi Tokumasu and Shin-ichi Tsuda
Extended Abstracts of the Ninth JSME-KSME Thermal and Fluids Engineering Conference   TFEC9(1422)    2017   [Refereed]
A Discussion on the Effect of Quantum Nature of Liquid Hydrogen on its Bubble Nucleation Using Density Functional Theory
Daiki Yasui, Hiroki Nagashima, Takashi Tokumasu, Satoshi Watanabe and Shin-ichi Tsuda
Extended Abstracts of the Ninth JSME-KSME Thermal and Fluids Engineering Conference   TFEC9(1349)    2017   [Refereed]
Molecular Analysis of Oxygen Permeation Properties in Ionomer on Pt Surface on PEMFC
Yuya Kurihara, Takuya Mabuchi and Takashi Tokumasu
Proc. of 6th European PEFC and Electrolyser Forum   B0807   2017   [Refereed]
Molecular Simulations of Oxygen Scattering and Surface Diffusion on Ionomer Surface
Masataka Nakauchi, Takuya Mabuchi, Takuma Hori, Yuta Yoshimoto, Ikuya Kinefuchi, Hideki Takeuchi and Takashi Tokumasu
Proc. of 6th European PEFC and Electrolyser Forum   B0804   2017   [Refereed]
Ionomer Dispersions in Water/Alcohol Solutions by Coarse-Grained Molecular Dynamics
Takuya Mabuchi and Takashi Tokumasu
ECS Transactions   80 577-582   2017   [Refereed]
Gas-Surface Interaction Study of Oxygen Molecules on Ionomer Surface in Catalyst Layer
Masataka Nakauchi, Takuya Mabuchi, Takuma Hori, Yuta Yoshimoto, Ikuya Kinefuchi, Hideki Takeuchi and Takashi Tokumasu
ECS Transactions   80 197-204   2017   [Refereed]
A Study on Pressure-driven Gas Transport in Porous Media: from Nanoscale to Microscale
Yoshiaki Kawagoe, Tomoya Oshima, Ko Tomarikawa, Takashi Tokumasu, Tetsuya Koido and Shigeru Yonemura
Microfluidics and Nanofluidics   20(12) 162   2016   [Refereed]
Molecular Dynamics Study of the Effect of Wettability of the Carbon Support on Proton Transport in Nafion Ionomer Thin Films
Joji Aochi, Takuya Mabuchi and Takashi Tokumasu
Journal of Thermal Science and Technology   11(3) 16-00423   2016   [Refereed]
Molecular Dynamics Study of Ionomer Adsorption at a Carbon Surface in Catalyst Ink
Tetsuya Mashio, Atsushi Ohma and Takashi Tokumasu
Electrochimica Acta   202  14-23   2016   [Refereed]
PEFCカソード触媒層のプロトン輸送に関する分子論的研究
青地成二, 馬渕拓哉, 徳増崇
燃料電池   15(3) 78-84   2016   [Refereed]
Correlation between the Swelling Characteristic and Humidity Cycle Durability of a Polymer Electrolyte Membrane
Kiyoto Kawai and Takashi Tokumasu
ECS Transactions   75(14) 695-702   2016   [Refereed]
A Molecular Dynamics Study of Transport Properties in Degraded Nafion Membrane
Susumu Kono, Takuya Mabuchi and Takashi Tokumasu
ECS Transactions   75(14) 651-658   2016   [Refereed]
Effect of Water Cluster Structure on Proton Transport in Proton-Exchange Membrane Using Reactive Molecular Dynamics Simulations
Takuya Mabuchi and Takashi Tokumasu
ECS Transactions   75(14) 6331-636   2016   [Refereed]
Reflection Characteristics of Oxygen Molecule on Ionomer Surface
Masataka Nakauchi, Takuya Mabuchi, Ikuya Kinefuchi, Hideki Takeuchi and Takashi Tokumasu
ECS Transactions   75(14) 615-622   2016   [Refereed]
Molecular Dynamics Study on Proton Transport in Supported Nafion Ionomer Thin Films on Lennard-Jones Walls
Joji Aochi, Takuya Mabuchi and Takashi Tokumasu
ECS Transactions   75(14) 607-614   2016   [Refereed]
Molecular Dynamics Simulation of Oxygen Diffusivity, Solubility, and Permeability in Ionomer on Pt Surface
Yuya Kurihara, Takuya Mabuchi and Takashi Tokumasu
ECS Transactions   75(14) 129-138   2016   [Refereed]
Akinori Fukushima, Toshiki Mima, Ikuya Kinefuchi, Takashi Tokumasu
Journal of Physical Chemistry C   119(51) 28396-28404   Dec 2015   [Refereed]
Molecular Dynamics Mechanism of Quantum Effect on the Thermodynamic and Transport Properties of Hydrogen
Hiroki Nagashima, Shin-ichi Tsuda, Nobuyuki Tsuboi, A. Koichi Hayashi, Takashi Tokumasu
Proceedings of ICFD2015   430-431   Oct 2015
Modeling of Pressure-driven Gas Flow in Nanoscale Porous Media
Yoshiaki Kawagoe, Shigeru Yonemura, Takashi Tokumasu
Proceedings of ICFD2015   834-835   Oct 2015
Analysis of Nanoscale Transport Phenomena of Reaction Materials for Next Generation PEFC
Takashi Tokumasu
Proceedings of ICFD2015      Oct 2015   [Invited]
Kiyoto Kawai, Takuya Mabuchi, Takashi Tokumasu
ECS Transactions   69(17) 579-586   Oct 2015   [Refereed]
Takuya Mabuchi, Takashi Tokumasu
ECS Transactions   69(17) 723-730   Oct 2015   [Refereed]
Joji Aochi, Takuya Mabuchi, Takashi Tokumasu
ECS Transactions   69(17) 715-722   Oct 2015   [Refereed]
Yuya Kurihara Takuya Mabuchi, Takashi Tokumasu
ECS Transactions   69(17) 691-700   Oct 2015   [Refereed]
Effect of Structure of Nafion and Hydrocarbon Ionomer on Oxygen Solubility
Yuya Kurihara Takuya Mabuchi, Takashi Tokumasu
Proceednigs of 5th European PEFC & H2 Forum, European Fuel Cell Conference      Jul 2015   [Refereed]
Takuya Mabuchi, Akinori Fukushima, Takashi Tokumasu
Journal of Chemical Physics   143(1)    Jul 2015   [Refereed]
Akinori Fukushima, Toshiki Mima, Ikuya Kinefuchi, Takashi Tokumasu
Journal of Nanoscience and Nanotechnology   15(4) 3224-3228   Apr 2015   [Refereed]
Takuya Mabuchi, Takashi Tokumasu
Journal of Nanoscience and Nanotechnology   15(4) 2958-2963   Apr 2015   [Refereed]
Shin-ichi Tsuda, Masato Tomi, Nobuyuki Tsuboi, Shohei Ikawa, Takashi Tokumasu
Journal of Nanoscience and Nanotechnology   15(4) 3117-3120   Apr 2015   [Refereed]
Hironori Sakai, Takashi Tokumasu
Solid State Ionics   274    Mar 2015   [Refereed]
Takashi Tokumasu, Akinori Fukushima, Takuya Mabuchi and Yuta Sugaya
Journal of Computational Chemistry, Japan      2013   [Refereed]
Takashi Tokumasu, Marie-Helene Meurisse, Nicolas Fillot and Philippe Vergne
Tribology International Journal   59 10-16   2013   [Refereed]
Takashi Tokumasu
ECS Transactions   50(2) 859-868   Oct 2012   [Refereed][Invited]
T. Sasabe, G. Inoue, S. Tsushima, S. Hirai, T. Tokumasu and U. Pasaogullari
ECS Transactions   50(2) 735-744   Oct 2012   [Refereed]
Takuya Mabuchi and Takashi Tokumasu
ECS Transactions   50(2) 175-181   Oct 2012   [Refereed]
Akinori Fukushima, Toshiki Mima, Ikuya Kinefuchi and Takashi Tokumasu
ECS Transactions   50(2) 197-206   Oct 2012   [Refereed]
Hiroki Nagashima, Takashi Tokumasu, Shin-ichi Tsuda, Nobuyuki Tsuboi, Mitsuo Koshi and A. Koichi Hayashi
Molecular Simulation   38(4-6) 404-413   2012   [Refereed]
Molecular Dynamics Study of Proton and Water Transfer in Polyelectrolyte Membrane
Takuya Mabuchi, Takashi Tokumasu
Proceedings of Eighth International Conference on Flow Dynamics      Nov 2011
Molecular Dynamics Study of Oxygen Permeation in the Ionomer on Pt Catalyst
Kiminori Sakai, Takashi Tokumasu
Proceedings of Eighth International Conference on Flow Dynamics      Nov 2011
A Molecular Dynamics Study of Momentum Transport in a Nanoscale Liquid Bridge
Takashi Tokumasu, Marie-Helene Meurisse, Nicolas Fillot and Philippe Vergne
Proceedings of the Eleventh International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration   138-139   Nov 2011
A Molecular Dynamics Study for the Lubrication Phenomena of Nanoscale Liquid Bridge
Takashi Tokumasu, Marie-Helene Meurisse, Nicolas Fillot and Philippe Vergne
ITC Hiroshima 2011 Extended Abstract      Nov 2011
A molecular Dynamics study on the Thermodynamic Estimation of Cryogenic Hydrogen
Hiroki Nagashima, Takashi Tokumasu, Shin-ichi Tsuda, Nobuyuki Tsuboi, Mitsuo Koshi, A. Koichi Hayashi
Proceedings of the Eleventh International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration   136-137   Nov 2011
Kiminori Sakai, Takashi Tokumasu
ECS Transactions   41(1) 2105-2113   Oct 2011   [Refereed]
Hironori Sakai, Taiki Yoshida, Takashi Tokumasu
ECS Transactions   41(1) 2097-2103   Oct 2011
Takuya Mabuchi, Takashi Tokumasu
ECS Transactions   41(1) 2115-2123   Oct 2011   [Refereed]
N. Fillot, H. Berro , P. Vergne , T. Tokumasu , T. Ohara , and G. Kikugawa
Journal of Chemical Physics   135(13)    Oct 2011   [Refereed]
Tetsuya Koido, Daigo Ito, Takashi Tokumasu, Ko Tomarikawa and Shigeru Yonemura
Journal of Thermal Science and Technology   6(3) 333-343   Aug 2011   [Refereed]
Takashi Tokumasu
Proceedings of the 2011 Energy Sustainability Conference & Fuel Cell Conference      Aug 2011   [Refereed]
Kiminori Sakai, Takashi Tokumasu
Proceedings of ASME-JSME-KSME Joint Fluids Engineering Cenference 2011      Jul 2011   [Refereed]
Hiroki Nagashima, Takashi Tokumasu, Shin-ichi Tsuda, Nobuyuki Tsuboi, Mitsuo Koshi and A. Koichi Hayashi
Proceedings of ASME-JSME-KSME Joint Fluids Engineering Cenference 2011      Jul 2011   [Refereed]
Tetsuya Koido, Ko Tomarikawa, Shigeru Yonemura and Takashi Tokumasu
Journal of Applied Physics   110(2)    Jul 2011   [Refereed]
Takashi Tokumasu and Daigo Ito
Journal of Applied Physics   109(6)    Mar 2011   [Refereed]
Takashi Tokumas, Izumi Ogawa, Michihisa Koyama, Takayoshi Ishimoto and Akira Miyamoto
Journal of Electrochemical Society   158(2) B175-B179   Feb 2011   [Refereed]
Assesment of Different Thermostating Techniques in the Simulation of Molecular Lubrication
H. Berro, T. Tokumasu, T. Ohara, G. Kikugawa, N. Fillot and P. Vergne
Proceedings of the 10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration   128-129   Nov 2010
A Molecular Dynamics Study on the Thermodynamic Properties of Croygenic Hydrogen
H. Nagashima, T. Tokumasu, S. Tsuda, N. Tsuboi and A. Koichi Hayashi
Proceedings of the 10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration   112-113   Nov 2010
Transport phenomena of water droplet in a slit pore
Yoshinobu Hamada, Takashi Tokumasu
Porceedings of the seventh International Conference on Flow Dynamics   382-383   Nov 2010
Proton transport in hydrogen bond network of confined water
Nobuya Miyoshi, Ikuya Kinefuchi, Takashi Tokumasu, Shu Takagi, Yoichiro Matsumoto
Proceedings of the 10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration   108-109   Nov 2010
Molecular dynamics study of oxygen permeation to catalytic metal covered with polyelectrolyte membrane
Kiminori Sakai, Takashi Tokumasu
Proceedings of the Seventh International Conference on Flow Dynamics   384-385   Nov 2010
Analysis of Proton Transferring Property including Grotthus Mechanism in Polymer Electrolyte Membrane
Taiki Yoshida, Takashi Tokumasu
Proceedings of the Seventh International Conference on Flow Dynamics   380-381   Nov 2010
Taiki Yoshida, Takashi Tokumasu
Polymer Electrolyte Fuel Cells 10-Part2   33 1055-1065   Oct 2010   [Refereed]
Koido Tetsuya, Tomarikawa Kou, Yonemura Shigeru, Takashi Tokumasu
Proc. 27th Symposium on Rarefied Gas Dynamics      Jul 2010   [Refereed]
Molecular dynamics study of transport phenomena of water droplet in a nano slit pore
Yoshinobu Hamada, Takashi Tokumasu
Proceedings of 13th International Conference on Theoretical Aspects of Catalysis   118-118   Jun 2010

Misc

 
金属表面における気体分子の解離現象の数値解析
徳増 崇
日本機械学会流体工学部門ニューズレター      Sep 2008
統合化計算化学手法による燃料電池材料設計 - 第4回:電子状態を考慮した分子動力学法の基礎と燃料電池触媒反応現象解析への応用 -
徳増崇, 坪井秀行, 古山通久, 遠藤明, 久保百司, Carlos A. Del Carpio, 宮本明
燃料電池   5(4) 111-116   Apr 2006
熱流体工学における分子動力学法(第4回)
徳増 崇, 小原 拓
日本数値流体力学会誌   10(1) 41-46   Feb 2002
熱流体工学における分子動力学法(第3回)
徳増 崇, 小原 拓
日本数値流体力学会誌   9(5) 177-182   Nov 2001
熱流体工学における分子動力学法(第2回)
徳増 崇, 小原 拓
日本数値流体力学会誌   9(4) 122-127   Aug 2001

Books etc

 
Molecular Dynamics - Theroretical developments and applications in nanotechnology and energy - Charter 15
Takashi Tokumasu (Part:Joint Editor)
2012   
Charter 5, Multi-scale Analysis of Flow Phenomena Including Surface Reactions
Takashi Tokumasu
Tohoku University Press   Mar 2008   
数値流体力学ハンドブック
徳増 崇, 崎山 幸紀 (Part:Joint Work, 第7章)
Apr 2003   

Conference Activities & Talks

 
PEFC触媒層における酸素分子拡散機構の分子論的解析
中内将隆, 馬渕拓哉, 吉本勇太, 金子敏弘, 杵淵郁也, 武内秀樹, 徳増崇
第32回数値流体力学シンポジウム   11 Dec 2018   
Scattering Properties of Gas Molecules on Water Adsorbed Surfaces in High Knudsen Number Flows
Naoya Uene, Hideki Takeuchi, Yasutaka Hayamizu and Takashi Tokumasu
the 21st Australasian Fluid Mechanics Conference   11 Dec 2018   
粗視化分子動力学法を用いた水・アルコール混合溶液中におけるアイオノマー凝集現象の解析
馬渕拓哉, 徳増崇
第32回数値流体力学シンポジウム   11 Dec 2018   
Thermodynamic Property Gradients in Near-Surface Water Thin Film
Manish Gupta, An Zou, Takashi Tokumasu and Shalabh C. Maroo
18th International Symposium on Advanced Fluid Information   7 Nov 2018   
Large Scale Molecular Simulations of Mass Transport Phenomena in PEFC [Invited]
Takashi Tokumasu and Takuya Mabuchi
15th International Conference on Flow Dynamics   7 Nov 2018   

Research Grants & Projects

 
燃料電池内部の反応流に関する研究
Basic Science Research Program
Project Year: Apr 2003   
Study on Bubble formation in Liquid Oxygen
Project Year: Apr 1999   
Study on Two Phase Flow in Cryogenic Fluids
Project Year: Apr 1999   
Study on Collision Model of Diatomic Molecules in DSMC method
Project Year: Apr 1993   

Social Contribution

 
出前講座「IVICTユニバーサイエンス」
[Others]  12 Dec 2011
仙台青陵中等教育学校で3,4年生を対称に流体力学の講義を行った。
みやぎ県民大学 大学開放講座
[Others]  30 Sep 2011
一般の人を対象に、「ミクロのながれ」について講義を行った。
出前講座「IVICTユニバーサイエンス」
[Others]  29 Aug 2010
新潟県立柏崎翔洋中等教育学校で高校1,2年生を対称に流体力学の講義を行った。

Others

 
Jan 2011   高分子電解質膜内部の水クラスター構造の解明
高分子電解質膜内部の水クラスターの構造を中性子小角散乱実験および分子動力学法による数値計算により明らかにする。
Oct 2009   アニオン界面活性剤の挙動に関する分子論的研究
アニオン界面活性剤の挙動について、分子論的に解析を行う。
Apr 2009   水分子ネットワーク構造におけるプロトン輸送特性の解明
固体表面近傍におけるプロトン輸送現象を分子動力学法により解析し、そのメカニズムを把握する。
Apr 2008   液体水素の熱物性に関する分子論的解析
液体水素の熱物性を分子動力学法により解析し、その量子効果発現メカニズムを解明する。
Apr 2008   Molecular Dynamics study about the nanoscale lubrication phenomena of liquid bridge
ナノスケールの液中存在下での摩擦現象を分子動力学法を用いて解析した。液中は水とし、壁面は疎水面としてSiを、親水面としてSiO2を用いた。この系において壁面を一定速度で動かし、液中の幅や高さに対するせん断力の強さについて解析を行った。