Details of the Researcher

PHOTO

Shota Arai
Section
Graduate School of Engineering
Job title
Specially Appointed Research Fellow
e-Rad No.
20987200

Professional Memberships 2

  • American Physical Society

    2023/12 - Present

  • 日本物理学会

    2018/06 - Present

Research Interests 4

  • 計算機シミュレーション

  • マニフォールド学習

  • 非平衡

  • 液体論

Research Areas 1

  • Natural sciences / Bio-, chemical, and soft-matter physics /

Papers 6

  1. PorousGen: An efficient algorithm for generating porous structures with accurate porosity and uniform density distribution

    Shota Arai, Takashi Yoshidome

    Computational Materials Science 264 114478-114478 2026/10

    Publisher: Elsevier BV

    DOI: 10.1016/j.commatsci.2025.114478  

    ISSN: 0927-0256

  2. Structure-based prediction of gas diffusion property of catalytic layer of proton exchange membrane fuel cells via manifold learning and X-ray ptychographic nano-computed tomography

    Shota Arai, Yuki Takayama, Takashi Yoshidome

    Journal of Power Sources 676 239916-239916 2026/06

    Publisher: Elsevier BV

    DOI: 10.1016/j.jpowsour.2026.239916  

    ISSN: 0378-7753

  3. Interface-Packing Analysis of F1-ATPase using Integral Equation Theory and Manifold Learning Peer-reviewed

    Takashi Yoshidome, Shota Arai

    Physica A: Statistical Mechanics and its Applications 130201-130201 2024/10

    Publisher: Elsevier BV

    DOI: 10.1016/j.physa.2024.130201  

    ISSN: 0378-4371

  4. Extraction of molecular information from experimental data on liquids using manifold learning Peer-reviewed

    Shota Arai, Gota Kikugawa, Takashi Yoshidome

    Journal of Molecular Liquids 126251-126251 2024/10

    Publisher: Elsevier BV

    DOI: 10.1016/j.molliq.2024.126251  

    ISSN: 0167-7322

  5. A Microscopic Theory for Preferential Solvation Effects on Viscosity Peer-reviewed

    Shota Arai, Akira Yoshimori, Yuka Nakamura, Ryo Akiyama

    Journal of the Physical Society of Japan 91 (9) 2022/09/15

    Publisher: Physical Society of Japan

    DOI: 10.7566/jpsj.91.094602  

    ISSN: 0031-9015

    eISSN: 1347-4073

  6. Reduced density profile of small particles near a large particle: Results of an integral equation theory with an accurate bridge function and a Monte Carlo simulation Peer-reviewed

    Yuka Nakamura, Shota Arai, Masahiro Kinoshita, Akira Yoshimori, Ryo Akiyama

    The Journal of Chemical Physics 151 (4) 2019/07/28

    Publisher: AIP Publishing

    DOI: 10.1063/1.5100040  

    ISSN: 0021-9606

    eISSN: 1089-7690

    More details Close

    Solute–solvent reduced density profiles of hard-sphere fluids were calculated by using several integral equation theories for liquids. The traditional closures, Percus–Yevick (PY) and the hypernetted-chain (HNC) closures, as well as the theories with bridge functions, Verlet, Duh–Henderson, and Kinoshita (named MHNC), were used for the calculation. In this paper, a one-solute hard-sphere was immersed in a one-component hard-sphere solvent and various size ratios were examined. The profiles between the solute and solvent particles were compared with those calculated by Monte Carlo simulations. The profiles given by the integral equations with the bridge functions were much more accurate than those calculated by conventional integral equation theories, such as the Ornstein–Zernike (OZ) equation with the PY closure. The accuracy of the MHNC–OZ theory was maintained even when the particle size ratio of solute to solvent was 50. For example, the contact values were 5.7 (Monte Carlo), 5.6 (MHNC), 7.8 (HNC), and 4.5 (PY), and the first minimum values were 0.48 (Monte Carlo), 0.46 (MHNC), 0.54 (HNC), and 0.40 (PY) when the packing fraction of the hard-sphere solvent was 0.38 and the size ratio was 50. The asymptotic decay and the oscillation period for MHNC–OZ were also very accurate, although those given by the HNC–OZ theory were somewhat faster than those obtained by Monte Carlo simulations.

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Misc. 1

  1. 燃料電池触媒層の構造分類とガス拡散予測―放射光X線ナノCTと機械学習の統合解析―

    高山 裕貴 , 荒井 翔太 , 吉留 崇

    クリーンエネルギー (9) 45-51 2026/09

Presentations 42

  1. 機械学習を用いたフィラー充填モデルの引張による破壊の予測

    荒井 翔太, 高山 裕貴, 吉留 崇

    第40回分子シミュレーション討論会 2026/12

  2. A Data-Driven Framework for Predicting Transport Properties Using Manifold-Learning-Based Feature Extraction of Porous Structures

    Shota Arai, Yuki Takayama, Takashi Yoshidome

    International Conference on Biophysics and Biomedical Sciences 2026 2026/11

  3. Prediction of the Gas Diffusion Coefficients in Porous Materials using Nano-CT images of NanoTerasu and Manifold Learning

    Shota Arai, Yuki Takayama, Takashi Yoshidome

    XXXVII IUPAP Conference on Computational Physics 2026/08/10

  4. Prediction of Gas Diffusion Coefficients in Proton Exchange Membrane Fuel Cells Using X-ray Ptychography and Manifold Learning

    Shota Arai, Yuki Takayama, Takashi Yoshidome

    International Symposium: Towards New Scientific Horizons with Synchrotron Radiation 2026/07/28

  5. Prediction of Gas Diffusion Coefficients from X-ray Ptychography Images via Manifold Learning

    Shota Arai, Yuki Takayama, Takashi Yoshidome

    International conference on Machine Learning Physics 2026 2026/07/13

  6. ナノテラスのナノCT画像とマニフォールド学習を用いた多孔質構造内の拡散予測

    吉留 崇, 荒井 翔太, 高山 裕貴

    【CREST革新的計測解析】交流会 2026/05/30

  7. An efficient algorithm for generating porous structures with controlled porosity

    2026/03/25

  8. Decrease in viscosity of the entire solution due to nanoparticle dispersion

    2026/03/24

  9. Prediction of Gas Diffusion Coefficients Using Manifold Learning and X-ray Ptychography Data

    Shota Arai, Yuki Takayama, Takashi Yoshidome

    The APS Global Physics Summit 2026 2026/03/18

  10. 「マニフォールド学習と計算機実験」によるX線タイコグラフィー実験データ解析法の提案

    荒井 翔太, 高山 裕貴, 吉留 崇

    第39回分子シミュレーション討論会 2025/11/24

  11. Manifold-Learning Approach for Analytical Calculation of Gas Diffusion Coefficients in Porous Structures

    Shota Arai, Yuki Takayama, Takashi Yoshidome

    29th International Conference on Statistical Physics 2025/07/14

  12. Effect of solvation structure on the diffusion of a nanoparticle

    Yuka Nakamura, Shota Arai, Akira Yoshimori, Ryo Akiyama

    18th Mini-Symposium on Liquids (MSL2025) 2025/05/18

  13. Machine-Learning Approach to the Extraction of Microscopic Information from Experimental Data

    Shota Arai, Yuki Takayama, Gota Kikugawa, Takashi Yoshidome

    The APS Global Physics Summit 2025 2025/03/18

  14. Machine-learning approach for extracting microscopic information from experimental data on liquid substances and porous structures Invited

    Shota Arai, Yuki Takayama, Gota Kikugawa, Takashi Yoshidome

    IIS Symposium Soft and Liquid Matter Physics: Past, Present and Future (SLMP2025) 2025/03/10

  15. マニフォールド学習による多孔質構造のガス拡散の解析と予測

    荒井 翔太, 高山 裕貴, 吉留 崇

    第38回分子シミュレーション討論会 2024/12/02

  16. Manifold-Learning Approach to Material Data: Application to Experimental Data of Liquid Substances and Porous Structural Data

    Shota Arai, Gota Kikugawa, Yuki Takayama, Takashi Yoshidome

    12th Liquid Matter Conference 2024/09/24

  17. Effect of solvation structure around a nanoparticle on the breakdown of the Stokes−Einstein relationship

    Yuka Nakamura, Shota Arai, Akira Yoshimori, Ryo Akiyama

    12th Liquid Matter Conference 2024/09

  18. マニフォールドラーニングによる多孔質構造と物理的特性の関係の構築

    荒井 翔太, 高山 裕貴, 吉留 崇

    第79回年次大会(2024年) 2024/09

  19. Manifold-Learning Approach for Extracting Molecular Information

    Shota Arai, Gota Kikugawa, Yuki Takayama, Takashi Yoshidome

    17th Mini-Symposium on Liquids (MSL2024) 2024/07/06

  20. Decreases in Shear Viscosity with Multicomponent Particle Systems

    Shota Arai, Akira Yoshimori

    17th Mini-Symposium on Liquids (MSL2024) 2024/07/06

  21. マニフォールド学習を用いた物性研究〜予測に向けて〜

    荒井 翔太, 高山 裕貴, 菊川 豪太, 吉留 崇

    CREST「革新的計測解析」およびさきがけ「計測解析基盤」の交流会 2024/05/18

  22. マニフォールドラーニングを用いた構造と物理的特性の関係の構築

    荒井 翔太, 高山 裕貴, 吉留 崇

    ソフトマテリアル理論研究の最前線 2023/12/06

  23. マニフォールドラーニングを用いた多孔質中のガス拡散の解析

    荒井 翔太, 高山 裕貴, 吉留 崇

    第37回分子シミュレーション討論会 2023/12

  24. The Effect of Depletion Force on Viscosity

    S. Arai, A. Yoshimori, Y. Nakamura, R. Akiyama

    28th International Conference on Statistical Physics 2023/08

  25. 2成分剛体球溶媒中における溶質表面での大きな溶媒粒子の濃縮

    久保勇人, 中村有花, 荒井翔太

    日本物理学会 第78回年次大会(2023年) 2023/03

  26. サイズの異なる多成分粒子系の分布に対する相互作用の効果

    荒井翔太, 吉森明

    日本物理学会 第78回年次大会(2023年) 2023/03

  27. 混み合った系の粘性に対する溶質-溶媒間の相互作用の効果

    荒井翔太, 中村有花, 吉森明, 秋山良

    第51回新潟支部例会 2022/12/03

  28. 溶質と溶媒の相互作用が溶液全体の粘性に及ぼす影響

    荒井翔太, 中村有花, 吉森明, 秋山良

    日本物理学会 2022年秋季大会 2022/09

  29. 混み合った環境における粘性の理論

    荒井翔太, 中村有花, 吉森明, 秋山良

    理論タンパク質物性科学の最前線: 理論と実験との密な協働 2022/07

  30. 2成分剛体球溶媒中における大きな溶質の拡散と溶液の粘性に影響を及ぼす溶媒和構造

    中村有花, 荒井翔太, 吉森明, 秋山良

    日本物理学会 第77回年次大会(2022年) 2022/03/15

  31. 大きさの異なる粒子のダイナミックスの動的密度汎関数理論による研究

    有賀司, 荒井翔太, 吉森明

    第35回分子シミュレーション討論会 2021/11/27

  32. 動的密度汎関数理論を用いたサイズの異なる粒子系の粘性の理論

    荒井翔太, 吉森明

    日本物理学会 2021年秋季大会 2021/09

  33. A theory of viscosity in the system of a large particle immersed in a binary solvent

    S. Arai, A. Yoshimori, Y. Nakamura, R. Akiyama

    The organizing committee of the 11th Liquid Matter Conference 2020/2021 2021/07

  34. 動的密度汎関数理論を用いた多成分溶媒系の粘性の理論

    荒井翔太, 吉森明

    第76回年次大会(2021年) 2021/03

  35. 溶媒多成分系における枯渇力と粘性の理論

    荒井翔太, 中村有花, 吉森明, 秋山良

    日本物理学会 2020年秋季大会 2020/09

  36. サイズの異なる粒子系における溶質-溶媒間の相互作用と粘性の関係

    荒井翔太, 中村有花, 吉森明, 秋山良

    15th Mini-Symposium on Liquids (MSL2022) 2020/07

  37. 2成分溶媒系に溶質を溶かしたときの粘性に対する溶媒組成比の効果

    荒井翔太, 中村有花, 吉森明, 秋山良

    日本物理学会 第74回年次大会(2020年) 2020/03

  38. 大きさの異なる多粒子系の粘性の理論

    荒井翔太, 中村有花, 吉森明, 秋山良

    第49回新潟支部例会 2019/12/19

  39. 大きさの違う粒子からなる多成分系の粘性の理論

    荒井翔太, 中村有花, 吉森明, 秋山良

    日本物理学会 2019年秋季大会 2019/09

  40. Changes in viscosity due to a large solute immersed in a binary solvent

    Shota Arai, Yuka Nakamura, Akira Yoshimori, Ryo Akiyama

    The 13th Mini-Symposium on Liquids 2019/07

  41. Reduced density profile of small solvent particles near a large particle

    Yuka Nakamura, Shota Arai, Ryo Akiyama, Akira Yoshimori, Masahiro Kinoshita

    Joint Conference of EMLG/JMLG Meeting 2018 and 41st Symposium on Solution Chemistry of Japan 2018/11

  42. 大きさの異なる粒子を含む剛体球系の動径分布関数

    中村有花, 荒井翔太, 秋山良, 吉森明, 木下正弘

    日本物理学会 2018 年秋季大会 2018/09

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Media Coverage 3

  1. 東北大など、X線タイコグラフィ・ナノCTによりガス拡散を10秒強で予測

    テックプラス

    2026/04

  2. 東北大、ナノCTと機械学習で燃料電池性能を高速予測

    オプトロニクスオンライン

    2026/04

  3. ナノテラスのナノCT画像からガス拡散を10秒で予測 - 燃料電池の高出力・長寿命化に向けた材料設計最適化へ -

    東北大学、JST(プレスリリース)

    2026/03