Updated on 2024/04/22

写真a

 
SONG Yuxi
 
Organization
Graduate School of Informatics Department of Complex Systems Science 5 Assistant Professor
Undergraduate School
School of Informatics Department of Natural Informatics
Title
Assistant Professor
External link

Degree 3

  1. Doctor (Engineering) （ 2023.9   Nagoya University ） 

  2. Master (Engineering) （ 2020.9   Nagoya University ） 

  3. Bachelor(Engineering) （ 2018.7   Jilin University ） 

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Research History 2

  1. Nagoya University   Graduate School of Informatics Department of Complex Systems Science 5   Assistant Professor

    2024.4

  2. Japan Society for Promotion of Science   Researcher

    2023.4 - 2024.3

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Education 3

  1. Nagoya University

    2020.10 - 2023.9

  2. Nagoya University

    2018.10 - 2020.9

  3. Jilin University

    2014.9 - 2018.7

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Professional Memberships 1

  1. トライボロジー学会

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Papers 3

  1. Hydration-lubrication performance improvement via synergistic effects of free polymers and polymer brushes Reviewed

    Lin, FC; Itoh, S; Hirayama, T; Hirooka, C; Song, YX; Fukuzawa, K; Zhang, HD; Azuma, N

    TRIBOLOGY INTERNATIONAL   Vol. 191   2024.3

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    Publisher：Tribology International  

    In this study, we demonstrated hydration lubricity improvement via the synergistic effects of free polymers and brush films formed on a surface. We analyzed the hydration interfacial structure using neutron reflectometry and measured the shear viscoelasticity of the film using the fiber wobbling method. The results revealed that the volume fraction of the free polymer adsorbed on the brush film increased, leading to an improvement in the load-carrying capacity. Additionally, a water-rich layer formed on the surface owing to the brush film's exclusion-volume effect, and this layer reduced the shear resistance and increased the lubricity. These insights into the composite films of polymer brushes and adsorbed free polymers offer new perspectives and design principles for the development of hydration lubrication.

    DOI： 10.1016/j.triboint.2023.109189

    Web of Science

    Scopus

  2. Effects of Polarity of Polymers on Conformation and Lubricating Film Formation of Adsorbed Films Reviewed

    Yuxi Song, Kenji Fukuzawa, Tomoko Hirayama, Naoki Yamashita, Norifumi L Yamada, Shintaro Itoh, Naoki Azuma, Hedong Zhang

    Macromolecules     2023.2

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： https://doi.org/10.1021/acs.macromol.2c02238

  3. In-situ measurement of temporal changes in thickness of polymer adsorbed films from lubricant oil by vertical-objective-based ellipsometric microscopy Reviewed

    Yuxi Song, Kenji Fukuzawa, Shintaro Itoh, Hedong Zhang, Naoki Azuma

    Tribology International     2022.1

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： https://doi.org/10.1016/j.triboint.2021.107341

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KAKENHI (Grants-in-Aid for Scientific Research) 1

  1. 分子の状態と相互作用の解明による高分子添加剤の分子設計論の構築

    Grant number：23KJ1082  2023.4 - 2025.3

    科学研究費助成事業  特別研究員奨励費

    SONG YUXI

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    環境と調和した持続可能な社会の実現や、自動車などの機械システムのエネルギー効率向上のため、潤滑油の低粘度化が求められている。しかし、低粘度油を使用すると、摺動面が直接接触するため、摩擦が大きくなる。潤滑油に含まれる高分子添加剤は、摺動面に吸着することで、摺動面の直接接触による摩擦を低減することができる。本研究では、添加剤、潤滑剤、摺動面間の分子間相互作用を定量化し、分子間相互作用から分子状態を推定することができる。これにより、分子構造から潤滑性能の予測が可能となり、ボトムアップ型の添加剤分子設計理論の確立を目指す。

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