Details of the Researcher

PHOTO

Toshiaki Nishi
Section
Graduate School of Engineering
Job title
Associate Professor
Degree

Research History 4

  • 2025/01 - Present
    Tohoku University　Graduate School of Engineering Department of Finemechanics　Associate Professor

  • 2023/02 - 2024/12
    Tohoku University　Graduate School of Engineering Department of Finemechanics　Assistant professor

  • 2019/04 - 2023/01
    ASICS Corporation　Institute of Sports Science

  • 2011/04 - 2019/03
    ASICS Corporation　Institute of sports technology

Education 3

  • Tohoku University　Graduate School of Engineering　Department of Finemechanics

    2019/04 - 2021/09

  • Kyoto University　Graduate School of Science　Division of Chemistry

    2009/04 - 2011/03

  • Kyoto University　Faculty of Science　Division of Chemistry

    2005/04 - 2009/03

Committee Memberships 4

  • 日本トライボロジー学会　表彰委員会

    2026/05 - Present

  • 公益社団法人 精密工学会　2026年度精密工学会秋季大会学術講演会実行委員会

    2025/11 - Present

  • 日本トライボロジー学会　編集委員会

    2023/06 - 2026/05

  • 日本トライボロジー学会　2025秋函館実行委員会

    2024/07 - 2025/10

Professional Memberships 4

  • 日本機械学会

    2024/08 - Present

  • 日本設計工学会

    2023/09 - Present

  • The Society of Rubber Science and Technology, Japan

    2018/11 - Present

  • Japanese Society of Tribologists

    2012/11 - Present

Research Interests 4

  • Wettability

  • Rheology

  • Soft Matter

  • Tribology

Research Areas 2

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Machine materials and mechanics / Rubber Elastomer Polymer

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Machine elements and tribology / Tribology

Awards 9

  1. The Young Scientists’ Award

    2026/04　Ministry of Education, Culture, Sports, Science and Technology

  2. 学生優秀発表指導教員賞

    2025/05　Japan Society for Design Engineering　Study of High-Friction Rubber Treads Using Negative Fluid Pressure Generated in An Expansion Gap

  3. 技術賞

    2024/05　Development of shoes with ultra lightweight and high slip resistance ensured by an unisole structure of cross-linked resin foam

  4. 優秀発表賞

    2024/05　Japan Society for Design Engineering

  5. President's award

    2022/03　Tohoku University　Analysis of Friction Mechanism of Rubber under Water Lubrication and Its Application to High Grip Sports Shoes

  6. Young Excellent Presentation Award

    2018/11　The Society of Rubber Science and Technology, Japan　Influence of Viscoelastic Property on Friction Behavior of Rubber on Rough Surface

  7. Japanese Society of Tribology Incentive award

    2014/05　Japanese Society of Tribology　Friction Properties of Rubber under Water/Ethanol lubricated conditions

  8. Best poster award

    2013/11　Japanese Society of Tribology

  9. Excellent poster award

    2012/11　Japanese Society of Tribology

Show all ︎Show 5

Papers 45

  1. A 30-fold anisotropy in rubber friction in liquids induced by an inclined groove texture for fluid pressure control Peer-reviewed

    Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    Tribology International　226　112500-112500　2027/02

    Publisher: Elsevier BV

    DOI： 10.1016/j.triboint.2026.112500 　

    ISSN： 0301-679X

  2. Experimental quantification of internal strain distributions in rubber friction under lubricated conditions: Dominance of bulk viscoelastic hysteresis

    Toshiaki Nishi, Tomohiro Nomoto, Yuya Tamura, Takuma Matsuo, Ken Yamaguchi, Isao Kuwayama, Takeshi Yamaguchi

    Tribology International　226　112455　2027/02

    DOI： 10.1016/j.triboint.2026.112455 　

  3. Tunable High–Low friction of slightly wetted Knits on glass via interfacial coverage and bulk capillary bridges Peer-reviewed

    Toshiaki Nishi, Shoma Kobayashi, Takaaki Nakajima, Yuto Endo, Takeshi Yamaguchi

    Materials & Design　265　115968　2026/05

    DOI： 10.1016/j.matdes.2026.115968 　

  4. Enhancing friction in rubber treads under lubrication: A review Peer-reviewed

    Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    Friction　14　(5)　9441202　2026/04/29

    Publisher: Tsinghua University Press

    DOI： 10.26599/frict.2025.9441202 　

    ISSN： 2223-7690

    eISSN： 2223-7704

  5. Influence of textile filament counts on friction between hydrogel and textile-covered rubber sheet in water

    Shin Ito, Toshiaki Nishi, Takaaki Nakajima, Yuto Endo, Yuto Sakaguchi, Noriko Tsuruoka, Yoichi Haga, Takeshi Yamaguchi

    Tribology International　216　111567-111567　2026/04

    Publisher: Elsevier BV

    DOI： 10.1016/j.triboint.2025.111567 　

    ISSN： 0301-679X

  6. Characteristics of Ground Reaction Force Variability During Walking in Post-Stroke Patients

    Daiki Naito, Yusuke Sekiguchi, Keita Honda, Midori Miyagi, Takeshi Yamaguchi, Toshiaki Nishi, Hide Matsumoto, Yuzuki Nakai, Yoshihiro Sasaki, Jun-Ichi Hayasaka, Daiki Haruyama, Koji Watanabe, Satoru Ebihara

    Sensors　25　(22)　6940　2025/11/13

    DOI： 10.3390/s25226940 　

  7. Low friction layer in sanitary products for reduced skin irritation

    Toshiaki Nishi, Kenta Matsui, Rina Ito, Mihoko Kuramochi, Masaya Fujita, Takeshi Yamaguchi

    Scientific Reports　15　(1)　33361　2025/09/29

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41598-025-17226-4 　

    eISSN： 2045-2322

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    Abstract Sanitary napkins are essential during menstruation, but they can sometimes cause skin irritation due to friction. In this study, we propose a novel design: introducing a low-friction layer within the bulk of a sanitary napkin. Friction tests were conducted between an artificial skin block and sanitary napkin specimens with and without a low-friction layer. The strain distribution on the lateral side of the artificial skin block was experimentally measured. The friction coefficient and strain decreased when the low-friction layer was applied under loads greater than 1.96 N. The strain increased with normal load. Because lower strain on the skin correlates with reduced skin irritation, the use of a low-friction layer in sanitary napkins is expected to reduce skin irritation, particularly under high contact pressure.

  8. Air-driven spiral scaffold mechanism for a group of mini-robots working together in the intestine Peer-reviewed

    Towa Tanada, Noriko Tsuruoka, Mitsuhiro Fujishiro, Yosuke Tsuji, Fumihito Arai, Takeshi Yamaguchi, Toshiaki Nishi, Yoichi Haga

    Sensors and Actuators A: Physical　390　116557-116557　2025/08

    Publisher: Elsevier BV

    DOI： 10.1016/j.sna.2025.116557 　

    ISSN： 0924-4247

  9. Effect of finger–ball friction on upper limb movement during fastball pitching in baseball

    Takeshi Yamaguchi, Sota Suzuki, Shinnosuke Suzuki, Toshiaki Nishi, Takehiro Fukuda, Daiki Nasu

    Scientific Reports　15　(1)　27759　2025/07/30

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41598-025-12298-8 　

    eISSN： 2045-2322

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    Abstract This study investigated the effect of the friction between the ball and fingertips (finger–ball friction) on upper limb movement during four-seam fastball pitching in terms of the centrifugal force acting on the ball. Eight skilled pitchers threw four-seam fastballs at approximately 130 km/h toward a target behind the home base. Water was applied as a low-friction condition and rosin powder was applied as a high-friction condition between the fingertips and the ball. Hand velocity and pitching radius (i.e., radius of the motion trajectory of the hand) were calculated from motion capture data. Centrifugal force evaluation index was calculated as the square of hand velocity divided by the pitching radius. Statistical parametric mapping was performed to compare the time-series of each variable between foot contact and ball release. Although no significant differences were observed, a tendency for hand velocity to decrease under low-friction conditions during the acceleration phase was observed. Additionally, the pitching radius was significantly greater under low-friction conditions around the maximum shoulder rotation timing, and consequently, the centrifugal force index significantly decreased during the first half of the acceleration phase. These findings deepen our understanding of how pitchers adjust their throwing motion under different finger–ball friction conditions.

  10. Increasing friction of tread rubber under lubrication by adjusting groove shape to control fluid flow

    Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    Tribology International　205　110531　2025/05

    DOI： 10.1016/j.triboint.2025.110531 　

  11. Impact of slip distance between fingertips and ball on baseball pitching performance under different friction conditions Peer-reviewed

    Takeshi Yamaguchi, Souta Suzuki, Shinnosuke Suzuki, Toshiaki Nishi, Takehiro Fukuda, Daiki Nasu

    Scientific Reports　15　(1)　9514　2025/03/27

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41598-025-93632-y 　

    eISSN： 2045-2322

  12. Influence of Surface Free Energy of Liquids and Liquid Distributions on the Friction of Paper Wipers Peer-reviewed

    Toshiaki Nishi, Takeshi Yamaguchi

    Friction　13　9440970　2025

    DOI： 10.26599/frict.2025.9440970 　

    ISSN： 2223-7690 2223-7704

  13. トライボエピソード―技術賞受賞― 架橋発泡樹脂を用いたユニソール構造による超軽量耐滑シューズの開発 Invited Peer-reviewed

    Toshiaki Nishi

    69　(12)　816-817　2024/12

  14. Effects of foot–ground friction and age-related gait changes on falls during walking: a computational study using a neuromusculoskeletal model

    Naoto Izumi, Takashi Yoshida, Toshiaki Nishi, Kei Masani, Takeshi Yamaguchi

    Scientific Reports　14　(1)　2024/11/28

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41598-024-81361-7 　

    eISSN： 2045-2322

    More details Close

    Abstract We used a neuromusculoskeletal model of bipedal walking to examine the effects of foot–ground friction conditions and gait patterns on slip- and trip-induced falls. We developed three two-dimensional neuro-musculoskeletal models in a self-organized manner representing young adults, elderly non-fallers, and elderly fallers. We simulated walking under different foot-ground friction conditions. The static friction coefficient between the foot and the ground was varied from 0.05 to 2.0. Under low friction conditions, the three gait models demonstrated slip-induced falls. The elderly faller model experienced the most slip. This is because the RCOF was higher in the elderly faller model due to its short stride length but much smaller foot clearance. Under high friction conditions, only the elderly faller model demonstrated trip-induced falls. Based on the analysis using the margin of stability, the forward postural stability of the model gradually decreased under high-friction conditions, with the toe of the swing foot contacting the ground and subsequently falling forward. These results imply that there is an optimal coefficient of friction for the ground to prevent slip- and trip-induced falls by people with less stable gaits, which may provide new insights into the design of shoes and floor surfaces for the elderly.

  15. Comparing the Ground Reaction Forces, Toe Clearances, and Stride Lengths of Young and Older Adults Using a Novel Shoe Sensor System

    Hide Matsumoto, Masaki Tomosada, Toshiaki Nishi, Yoshihiro Sasaki, Ryota Sakurai, Takeshi Yamaguchi

    Sensors　2024/10/26

    DOI： 10.3390/s24216871 　

  16. Comparing the Ground Reaction Forces, Toe Clearances, and Stride Lengths of Young and Older Adults Using a Novel Shoe Sensor System

    Hide Matsumoto, Masaki Tomosada, Toshiaki Nishi, Yoshinori Sasaki, Ryota Sakurai, Takeshi Yamaguchi

    2024/09/09

    DOI： 10.20944/preprints202409.0608.v1 　

  17. Development of High Slip-Resistant Footwear Outsole Using Rubber Surface Filled with Activated Carbon/Sodium Chloride Invited Peer-reviewed

    Toshiaki Nishi, Takeshi Yamaguchi

    59　(8)　371-373　2024/08

  18. Visualization of strain distribution in rubber bulk during friction Peer-reviewed

    Toshiaki Nishi, Kyohei Ueno, Tomohiro Nomoto, Shinya Sugisawa, Daiki Shin, Ken Yamaguchi, Isao Kuwayama, Takeshi Yamaguchi

    Scientific Reports　14　(1)　2024/06/12

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41598-024-64271-6 　

    eISSN： 2045-2322

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    Abstract This study employed a digital image correlation method (DICM) to experimentally quantify horizontal strain distribution in silicone rubber bulk during horizontal displacement against a stainless-steel sphere with/without glycerol. The strain distribution at different depth levels was measured by capturing the position of white powders in transparent rubber bulk. The experimental results indicated that each point in the rubber bulk moved while describing a horizontal loop during horizontal displacement depending on the position and lubrication conditions. This caused changes in the horizontal strain during horizontal displacement. These results suggest that the hysteresis term could be caused by changes in the vertical and horizontal strains.

  19. Effect of orientation and hardness of rubber tread block on the friction coefficient under glycerol lubrication and its underlying mechanisms Peer-reviewed

    Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    Tribology International　109904-109904　2024/06

    Publisher: Elsevier BV

    DOI： 10.1016/j.triboint.2024.109904 　

    ISSN： 0301-679X

  20. Machine learning prediction of footwear slip resistance on glycerol-contaminated surfaces: A pilot study Peer-reviewed

    Kaylie Lau, Takeshi Yamaguchi, Kei Shibata, Toshiaki Nishi, Geoff Fernie, Atena Roshan Fekr

    Applied Ergonomics　2024/05

    DOI： 10.1016/j.apergo.2024.104249 　

  21. High friction of rubber caused by negative fluid pressure under glycerol lubrication Peer-reviewed

    Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    Tribology International　192　109213-109213　2024/04

    Publisher: Elsevier BV

    DOI： 10.1016/j.triboint.2023.109213 　

    ISSN： 0301-679X

  22. Influence of Wettability on Friction of Soft Matter Invited Peer-reviewed

    Toshiaki Nishi

    69　(2)　111-116　2024/02

  23. High Friction of Paper Wipers in Partially Wet Conditions: Effect of Three-dimensional Nonuniform Wetting Peer-reviewed

    Toshiaki Nishi, Shoma Kobayashi, Takeshi Yamaguchi

    Tribology International　109426-109426　2024/02

    Publisher: Elsevier BV

    DOI： 10.1016/j.triboint.2024.109426 　

    ISSN： 0301-679X

  24. Influences of Wettability and Geometry on Adhesion Force between Sportswear Fabric and Human/Artificial Skin International-journal Peer-reviewed

    Toshiaki Nishi, Atsushi Matsumura, Manami Koshida, Tatsufumi Matsumoto, Takeshi Yamaguchi

    Tribology Online　18　(6)　353-364　2023/10/31

    DOI： 10.2474/trol.18.353 　

  25. Friction of diene rubbers on rough floors considering viscoelastic properties in the high strain range Peer-reviewed

    Toshiaki Nishi

    Tribology International　180　108225-108225　2023/02

    Publisher: Elsevier {BV}

    DOI： 10.1016/j.triboint.2023.108225 　

    ISSN： 0301-679X

  26. Study on Gait Analysis of Young and Older Adults Using Sole Sensor System

    TOMOSADA Masaki, MATUMOTO Hide, NISHI Toshiaki, SASAKI Yoshihiro, SAKURAI Ryota, YAMAGUCHI Takeshi

    The Proceedings of the Symposium on sports and human dynamics　2023　A-3-1　2023

    Publisher: The Japan Society of Mechanical Engineers

    DOI： 10.1299/jsmeshd.2023.a-3-1 　

    eISSN： 2432-9509

    More details Close

    In recent years, wearable sensors that enable gait analysis in a living environment without using force plates or motion capture systems have been developed. We conducted gait analysis using a shoe sole sensor system with four high-capacity compact triaxial force sensors and an inertial sensor mounted on the shoe sole. The system measured and compared the magnitude and variation (CV: coefficient of variation) of foot clearance and ground reaction force for young and older adult participants while walking in a straight line under test and non-test environment. Participants walked in a "test environment" in which they were told that gait parameters would be measured, and in a "non-test environment" in which they walked as usual without being told that they would be measured. We found that the minimum and maximum foot clearances were larger in the test environment but more varied in the non-test environment for both young and older adult participants. The results indicate that the over exertion during the gait under test environment may have improved their performance. The variation of ground reaction forces was reduced under non-test environment compared to under test environment.

  27. Development of high slip-resistant footwear outsole using rubber surface filled with activated carbon/sodium chloride Peer-reviewed

    Toshiaki Nishi, Takeshi Yamaguchi, Kazuo Hokkirigawa

    Scientific Reports　12　(1)　2022/12

    Publisher: Springer Science and Business Media {LLC}

    DOI： 10.1038/s41598-021-04102-0 　

    ISSN： 2045-2322

    eISSN： 2045-2322

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    <title>Abstract</title>High slip-resistant footwear outsoles can reduce the risk of slip and fall on wet and icy surfaces. Falls on wet and icy surfaces can cause serious life-threatening injuries, especially for older adults. Here we show that footwear outsoles using the rubbers filled with activated carbon or sodium chloride produce higher friction force and reduce the slip rate in walking. We have identified that small depressions were formed on outsole materials filled with activated carbon or sodium chloride during friction between the rubber and surface leading to some air ingress into the interface. While there are air bubbles between the rubber and surface, real contacts are surrounded by water with negative pressure (Laplace pressure). It is considered that the negative pressure promotes real contact formation, which causes high friction. We consider that the outsole materials filled with activated carbon or sodium chloride can reduce the risk of slip-and-fall accidents.

  28. High friction effect on water-lubricated floor by the addition of silicone rubber particles to diene rubber Peer-reviewed

    Toshiaki Nishi

    Tribology International　176　107900-107900　2022/09

    Publisher: Elsevier BV

    DOI： 10.1016/j.triboint.2022.107900 　

    ISSN： 0301-679X

  29. Wear behavior of thermoplastic urethane for the outer soles of spike shoes Peer-reviewed

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Yuhei Ito, Kazuo Hokkirigawa

    Wear　490-491　204105-204105　2022/02

    DOI： 10.1016/j.wear.2021.204105 　

    ISSN： 0043-1648

  30. Friction behavior between an artificial skin block and a glass plate under unlubricated and partly/completely water-lubricated conditions Peer-reviewed

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

    Tribology International　163　107179-107179　2021/07

    Publisher: Elsevier BV

    DOI： 10.1016/j.triboint.2021.107179 　

    ISSN： 0301-679X

  31. Friction behavior of silicone rubber hemisphere under non-uniform wetting states: With water droplets in air or air bubbles in water Peer-reviewed

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

    Tribology International　155　106769-106769　2021/03

    Publisher: Elsevier {BV}

    DOI： 10.1016/j.triboint.2020.106769 　

    ISSN： 0301-679X

  32. Optimizing the frictional behavior of partially wetting soft contacts as measured with hydrogel covered silicones Peer-reviewed

    Toshiaki Nishi

    Tribology International　153　106586-106586　2021/01

    Publisher: Elsevier BV

    DOI： 10.1016/j.triboint.2020.106586 　

    ISSN： 0301-679X

  33. Dry sliding friction and Wear behavior of thermoplastic polyurethane against abrasive paper Peer-reviewed

    Toshiaki Nishi

    Biotribology　23　100130-100130　2020/09

    Publisher: Elsevier BV

    DOI： 10.1016/j.biotri.2020.100130 　

    ISSN： 2352-5738

  34. Effects of Porosity and SEBS Fraction on Dry Sliding Friction of EVA Foams for Sports Shoe Sole Applications Peer-reviewed

    Toshiaki Nishi

    Tribology Transactions　63　(6)　1067-1075　2020/07/20

    Publisher: Informa UK Limited

    DOI： 10.1080/10402004.2020.1789797 　

    ISSN： 1040-2004 1547-397X

    eISSN： 1547-397X

  35. Development of Volunteer Shoes for Tokyo 2020 Based on Tribology Invited Peer-reviewed

    Toshiaki Nishi

    Toraibarojisuto/Journal of Japanese Society of Tribologists　2020/07/15

    DOI： 10.18914/tribologist.65.07_398 　

    ISSN： 0915-1168 2189-9967

  36. Effect of the Porosity Distribution on Dry Sliding Friction and Wear of Cross-Linked Ethylene Vinyl Acetate Foams With a Skin Layer Peer-reviewed

    Toshiaki Nishi

    Biotribology　22　100128-100128　2020/04

    Publisher: Elsevier BV

    DOI： 10.1016/j.biotri.2020.100128 　

    ISSN： 2352-5738

  37. Influence of unforced dewetting and enforced wetting on real contact formation and friction behavior between rubber hemisphere and glass plate during contacting and sliding processes Peer-reviewed

    Nishi, T., Yamaguchi, T., Shibata, K., Hokkirigawa, K.

    Tribology International　141　2020/01

    DOI： 10.1016/j.triboint.2019.105921 　

    ISSN： 0301-679X

  38. Effects of Wettability on Tribology of Soft Matter Invited Peer-reviewed

    Toshiaki Nishi

    Toraibarojisuto/Journal of Japanese Society of Tribologists　2019/10/15

    DOI： 10.18914/tribologist.64.10_588 　

    ISSN： 0915-1168 2189-9967

  39. Rubber wear mechanism discussion based on the relationship between the wear resistance and the tear resistance with consideration of the strain rate effect Peer-reviewed

    Nishi, T.

    Wear　426-427　2019/04

    DOI： 10.1016/j.wear.2018.12.084 　

    ISSN： 0043-1648

  40. Influence of curvature radius, elastic modulus, and contact velocity on real contact formation between rubber hemisphere and glass plate during contact process under a water-lubricated condition Peer-reviewed

    Toshiaki Nishi

    Tribology International　2019/02

    DOI： 10.1016/j.triboint.2018.09.024 　

    ISSN： 0301-679X

  41. Influence of lubricant properties and contacting velocity on real contact formation between rubber and glass in a contact process Peer-reviewed

    Toshiaki Nishi

    Tribology International　127　2018

    DOI： 10.1016/j.triboint.2018.06.015 　

  42. Precise Measurement of Clearance between Two Substrates Using Evanescent Waves Peer-reviewed

    Toshiaki Nishi, Kenta Moriyasu, Tsuyoshi Nishiwaki

    Tribology Online　12　(5)　251-256　2017

    Publisher: Japanese Society of Tribologists

    DOI： 10.2474/trol.12.251 　

    ISSN： 1881-2198

    More details Close

    <p>In the material designing process of footwear outer-soles, the rubber grip property under lubricated conditions is important. Generally, friction behaviors of rubber under such conditions are influenced by contact states, which can be changed by various factors, i.e. viscosity, sliding velocity, normal force, surface roughness and wettability between two substrates. To discuss the influences of each parameter, the contact conditions are investigated. The purpose of this study is to establish a new method to measure the distributions of real contact area and film thickness between two substrates based on the decay behavior of an evanescent field in a total reflection method. In conclusion, film thickness was measured with an accuracy of 1 nm in a range of clearance of less than 800 nm.</p>

  43. Influence of Dewettability on Rubber Friction Properties with Different Surface Roughness under Water/Ethanol/Glycerol Lubricated Conditions Peer-reviewed

    Toshiaki Nishi, Kenta Moriyasu, Kenichi Harano, Tsuyoshi Nishiwaki

    Tribology Online　11　(5)　601-607　2016

    Publisher: Japanese Society of Tribologists

    DOI： 10.2474/trol.11.601 　

    eISSN： 1881-2198

    More details Close

    In the material designing process of footwear outer-soles, a grip property of rubber is of crucial importance under water or oil lubricated condition. In general, contact states between rubber and floors under lubricated conditions are influenced by various factors, i. e. viscosity of a lubricant, sliding velocity, normal force, surface roughness and wettability between the two substrates. It has been said that lubrication conditions can be distinguished based on Stribeck curves, which are described by the relationship between Sommerfeld numbers and dynamic friction coefficients. Wettability under the static condition is estimated by the spreading coefficient, which is used to evaluate the energy balance of interface free energies at a triple line. The purpose of this study is to investigate influences of surface free energies, viscosities, sliding velocities and surface roughnesses on dynamic friction coefficients of rubber under lubricated conditions. The influences of spreading coefficients on the behaviors of Stribeck curves and the relationship between dewetting velocities and dynamic friction coefficients are also discussed.

  44. Influences of Surface Free Energy on Rubber Friction Properties under Water/Ethanol Lubricated Conditions Peer-reviewed

    Toshiaki Nishi, Kenta Moriyasu, Kenichi Harano, Tsuyoshi Nishiwaki

    Journal of Japanese Society of Tribologists　59　(11)　717-723　2015/11

    Publisher:

    ISSN： 0915-1168

  45. Synthesis, crystal structure, and physical property of radical cation salt of 2-(thiopyran-4-ylidene)-4,5-ethylenedithio-1,3-dithiole (TP-EDTT): (TP-EDTT) <inf>2</inf>SbF <inf>6</inf> Peer-reviewed

    Nakano, Y., Nishi, T., Uruichi, M., Yakushi, K., Yamochi, H.

    Physica B: Condensed Matter　405　(11 SUPPL.)　S49-S54　2010/06

    Publisher: Elsevier {BV}

    DOI： 10.1016/j.physb.2009.11.066 　

    ISSN： 0921-4526

Show all ︎Show first 5

Misc. 4

  1. ソフトマテリアルの摩擦制御とスポーツへの応用

    山口健, 西駿明

    計測と制御　65　(7)　491-497　2026/07

  2. 50th Leeds-Lyon Symposium on Tribology に参加して Invited Peer-reviewed

    西駿明

    トライボロジスト　71　(4)　339-341　2026/04

    DOI： 10.18914/tribologist.71.04_339 　

  3. すべりに伴い発生する流体圧力によるトレッドゴムの摩擦制御

    石﨏新太, 西駿明, 山口健

    トライボロジスト　70　(10)　628-633　2025/10

  4. ゴム材料の高摩擦化に関する研究動向

    山口健, 西駿明, 石﨏新太

    月刊トライボロジー　(9)　34-39　2025/09

Books and Other Publications 1

  1. 高分子材料のトライボロジー制御

    技術情報協会

    技術情報協会　2020/01

    ISBN: 9784861047770

Presentations 128

  1. Three-dimensional Internal Displacement and Strain Distributions in Rubber During Friction Against a Resin Sphere Revealed by Two-directional Synchrotron X-ray Imaging

    Toshiaki Nishi, Shoki Masubuchi, Shin Ito, Ryosuke Ueda, Stephen Fenner Stapleton, Kentaro Kajiwara, Takashi Kameshima, Wataru Yashiro, Takeshi Yamaguchi

    International Symposium: Towards New Scientific Horizons with Synchrotron Radiation　2026/07/27

  2. Preventing Foot Slippage in Powerlifting: Analysis of Traction Coefficient During Bench Press Leg Drive

    Toshiaki Nishi, Yuya Tamura, Arata Ishizako, Naoto Hiroi, Takeshi Yamaguchi

    Slips, Trips, and Falls 2026 International Conference　2026/06/16

  3. Rubber Surface Texturing to Generate Negative Fluid Pressure for Improved Slip Resistance in Liquids

    Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    Slips, Trips, and Falls 2026 International Conference　2026/06/16

  4. 負圧発生を意図したテクスチャ付与ゴムの摩擦に対する絞り膜効果の影響

    石﨏新太, 西本葵, 西駿明, 山口健

    トライボロジー会議2026春東京　2026/05/25

  5. 樹脂球との摩擦におけるゴム内部でのひずみ分布に及ぼす潤滑条件の影響に関する研究

    田村祐也, 西駿明, 松尾拓磨, 山口健, 桑山勲, 山口健

    トライボロジー会議2026春東京　2026/05/25

  6. 放射光X線による樹脂球−ゴムブロック摩擦中のゴム内部変位・ひずみ分布のその場定量手法の開発

    西駿明, 上田亮介, 梶原堅太郎, 亀島敬, 矢代航, 山口健

    トライボロジー会議2026春東京　2026/05/25

  7. 液中において摩擦異方性を発現させる金属表面テクスチャリングに関する研究

    石﨏新太, 西駿明, 山口健

    第25回機素潤滑設計部門講演会　2026/04/23

  8. Influence of Sliding Velocity on Strain Distribution in Resin–Rubber Contact: Role of Viscoelasticity

    Toshiaki Nishi, Tomohiro Nomoto, Yuya Tamura, Takuma Matsuo, Ken Yamaguchi, Isao Kuwayama, Takeshi Yamaguchi

    5th International Tyre Colloquium (IAVSD)　2026/03/25

  9. In-situ Synchrotron Quantification of Internal Strain Distribution in Rubber During Dry Sliding Against a Resin Sphere

    Toshiaki Nishi

    ELyT Workshop 2026　2026/03/07

  10. Achieving 30-fold friction anisotropy in liquids using rubber with inclined-groove texture

    Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    ELyT Workshop 2026　2026/03/07

  11. ソフトマテリアルの摩擦に及ぼす濡れの影響 Invited

    西駿明

    2025年度『化粧品学・界面化学』講演会　2025/12/19

  12. センサシューズシステムを用いた転倒高齢者・非転倒高齢者の運動力学解析

    中井柚希, 沼岡歩未哉, 西駿明, 佐々木祥弘, 須田祐貴, 河合恒, 笹井浩行, 桜井良太, 山口健

    日本機械学会 スポーツ工学・ヒューマンダイナミクス部門講演会 2025（SHD2025）　2025/11/28

  13. 野球の投球パフォーマンスに及ぼす指先—ボール間摩擦の影響と適応戦略

    鈴木紳之介, 西村大佑, 西駿明, 太田憲, 木村聡貴, 福田岳洋, 那須大毅, 山口健

    日本機械学会 スポーツ工学・ヒューマンダイナミクス部門講演会 2025（SHD2025）　2025/11/28

  14. 足裏の摩擦知覚に及ぼす加齢の影響に関する研究

    吉原千晴, 西川豪人, 西駿明, 山口健

    日本機械学会 スポーツ工学・ヒューマンダイナミクス部門講演会 2025（SHD2025）　2025/11/28

  15. Friction Control of Tread Rubber under Lubrication by Controlling Fluid Flow at the Contact Interface

    Arata Ishizako, Aoi Nishimoto, Toshiaki Nishi, Takeshi Yamaguchi

    22nd International Conference on Flow Dynamics 2025 (ICFD2025)　2025/11/10

  16. Visualizing Three-Dimensional Strain Evolution in Opaque Rubber via Synchrotron X-ray Digital Image Correlation Invited

    Toshiaki Nishi

    5th Czech-Japan Tribology Workshop　2025/10/21

  17. 水中におけるハイドロゲルとテキスタイル被覆ゴムの摩擦挙動に及ぼすテキスタイル構造の影響

    伊藤真, 西駿明, 中島孝明, 遠藤悠都, 坂口優斗, 鶴岡典子, 芳賀洋一, 山口健

    トライボロジー会議2025秋函館　2025/10/08

  18. 濡れたテキスタイルの摩擦に及ぼす糸構造の影響に関する研究

    西駿明, 小林祥真, 中島孝明, 遠藤悠都, 山口健

    トライボロジー会議2025秋函館　2025/10/08

  19. スポーツウエアにおけるトライボロジー

    西駿明, 山口健

    トライボロジー会議2025秋函館　2025/10/08

  20. 野球の投球動作に及ぼす指先-ボール間摩擦の影響に関する研究

    鈴木紳之介, 西駿明, 山口健

    トライボロジー会議2025秋函館　2025/10/08

  21. 液中におけるトレッドゴムの高摩擦化に及ぼす流体圧力の影響

    石﨏新太, 西駿明, 山口健

    トライボロジー会議2025秋函館　2025/10/08

  22. 無潤滑下での樹脂球とゴム平板の摩擦におけるゴム内部ひずみ分布の放射光による定量化

    蔵納慎太郎, 西駿明, 伊藤真, 梶原堅太郎, 上田亮介, 矢代航, 山口健

    トライボロジー会議2025秋函館　2025/10/08

  23. 粘弾性の異なるゴムと樹脂球の摩擦でのひずみ分布に及ぼすすべり速度の影響

    野本智広, 田村祐也, 西駿明, 松尾拓磨, 種村駿, 山口健, 桑山勲, 山口健

    トライボロジー会議2025秋函館　2025/10/08

  24. 負圧発生による高摩擦化を意図したゴムの表面テクスチャリングに関する研究

    西本葵, 石﨏新太, 西駿明, 山口健

    トライボロジー会議2025秋函館　2025/10/08

  25. 液中における摩擦異方性の付与を意図したソフトマテリアル表面テクスチャの研究

    石﨏新太, 西本葵, 西駿明, 山口健

    令和7年度東北支部設立50周年記念研究発表講演会　2025/09/20

  26. 濡れたテキスタイルの摩擦特性に対する糸構造の影響

    小林祥真, 西駿明, 中島孝明, 遠藤悠斗, 山口健

    令和7年度東北支部設立50周年記念研究発表講演会　2025/09/20

  27. Enhancing Friction with Inclined-Groove Tread Rubber to Generate Negative Fluid Pressure

    Arata Ishizako, Aoi Nishimoto, Toshiaki Nishi, Takeshi Yamaguchi

    2025/09/02

  28. Enhancing the Friction of Hydrogels in Water by Covering with Mesh Material

    Shin Ito, Toshiaki Nishi, Yuto Sakaguchi, Noriko Tsuruoka, Yoichi Haga, Takeshi Yamaguchi

    2025/09/02

  29. Influence of Normal Load on Strain Distribution in Rubber during Friction against a Resin Sphere

    Toshiaki Nishi, Tomohiro Nomoto, Kentaro Hanzawa, Shun Tanemura, Ken Yamaguchi, Isao Kuwayama, Takeshi Yamaguchi

    Leeds-Lyon Symposium on Tribology 2025　2025/09/02

  30. 指先摩擦条件が投球パフォーマンスおよび上肢運動制御に及ぼす影響と適応戦略

    鈴木紳之介, 沼岡歩未哉, 西駿明, 福田岳洋, 那須大毅, 山口健

    第19回Motor Control研究会　2025/08/20

  31. Effect of Finger–Ball Friction on Pitching Performance, Upper Limb Motion, and Forearm Muscle Activity in Baseball

    Shinnosuke Suzuki, Naoya Numaoka, Toshiaki Nishi, Takehiro Fukuda, Daiki Nasu, Takeshi Yamaguchi

    The XXX Congress of the International Society of Biomechanics (ISB2025)　2025/07/27

  32. Impact of Finger–Ball Friction on Slip Distance on Baseball Pitching Performance

    Takeshi Yamaguchi, Souta Suzuki, Shinnosuke Suzuki, Toshiaki Nishi, Takehiro Fukuda, Daiki Nasu

    The XXX Congress of the International Society of Biomechanics (ISB2025)　2025/07/27

  33. Relationship Between Plantar Friction Perception and Somatosensory Modalities

    Chiharu Yoshihara, Toshiaki Nishi, Takeshi Yamaguchi

    ISPGR World Congress 2025　2025/06/29

  34. Differences in Localized Ground Reaction Forces between Older Fallers and Non-Fallers Using a Shoe Sensor System

    Yuzuki Nakai, Hide Matsumoto, Toshiaki Nishi, Yoshihiro Sasaki, Ryota Sakurai, Yuki Suda, Hisashi Kawai, Hiroyuki Sasai, Takeshi Yamaguchi

    ISPGR World Congress 2025　2025/06/29

  35. Investigation of design guidelines for inclined-groove tread rubber aimed at high friction induced by negative fluid pressure

    Arata Ishizako, Aoi Nishimoto, Toshiaki Nishi, Takeshi Yamguchi

    2025/05/27

  36. Development for Visualization of Strain Distribution in Rubber Block during Sliding against Resin Sphere by Using Synchrotron Radiation

    Toshiaki Nishi, Kentaro Kajiwara, Shintaro Kuranou, Ryosuke Ueda, Wataru Yashiro, Takeshi Yamaguchi

    2025/05/26

  37. Quantification of Strain Distribution in Rubber Bulk during Friction Using Synchrotron Radiation Invited

    Toshiaki Nishi, Shintaro Kurano, Ryosuke Ueda, Xiaoyu Liang, Wataru Yashiro, Takeshi Yamaguchi

    79th STLE Annual Meeting & Exhibition　2025/05/20

  38. 靴底センサシステムを用いた歩行中の局所床反力，つま先クリアランス，ストライド長の同時計測

    山口健, 松本英, 西駿明, 佐々木祥弘, 桜井良太

    第21回姿勢と歩行研究会　2025/03/15

  39. ゴムの摩擦におけるひずみ挙動と摩擦発現に関する研究紹介 Invited

    西駿明

    第93回高分子材料のトライボロジー研究会　2025/03/15

  40. ゴムの摩擦の基礎と最新の研究事例 Invited

    Toshiaki Nishi

    2025/01/15

  41. 濡れ性に着目したパリ五輪陸上競技ウエアの開発 Invited

    2024/12/17

  42. 粘弾性特性の異なるゴムと樹脂球のすべり摩擦における摩擦力とひずみ分布の関係

    野本智広, 上野恭平, 西駿明, 杉澤進也, 半澤健太郎, 秦大樹, 山口健, 桑山勲, 山口健

    第 14 回トライボロジー秋の学校 in 愛知　2024/11/27

  43. 野球の直球投球における前腕筋群の筋活動に及ぼす指先とボール間の摩擦の影響

    鈴木紳之介, 西駿明, 福田岳洋, 那須大毅, 山口健

    第 14 回トライボロジー秋の学校 in 愛知　2024/11/27

  44. 足裏の摩擦係数と足裏触圧覚がすべり官能評価値に及ぼす影響に関する研究

    吉原千晴, 西駿明, 山口健

    第 14 回トライボロジー秋の学校 in 愛知　2024/11/27

  45. 潤滑下におけるゴムブロックの摩擦に及ぼす溝形状の影響

    西本葵, 石﨏新太, 西駿明, 山口健

    第 14 回トライボロジー秋の学校 in 愛知　2024/11/27

  46. ハイドロゲルの潤滑液中における高摩擦化に関する研究

    伊藤真, 西駿明, 鶴岡典子, 芳賀洋一, 山口健

    第 14 回トライボロジー秋の学校 in 愛知　2024/11/27

  47. Study on Spatial Distribution of Displacement and Strain in Rubber Friction against a Stainless-steel Sphere

    Toshiaki Nishi, Kyouhei Ueno, Tomonori Nomoto, Shinya Sugisawa, Daiki Shin, Ken Yamaguchi, Isao Kuwayama, Takeshi Yamaguchi

    2024/10/24

  48. Effect of Fiction between Fingertips and Ball on Upper Limb Motion during Fastball Pitching in Baseball

    Takeshi Yamaguchi, Shinnosuke Suzuki, Toshiaki Nishi, Takeshiro Fukuda, Daiki Nasu

    2024/11/17

  49. Effect of Friction between Fingertips and Ball on Muscle Activity of Forearm Muscle Groups during Fastball Pitching in Baseball

    Shinnosuke Suzuki, Fumiya Numaoka, Toshiaki Nishi, Takehiro Fukuda, Daiki Nasu, Takeshi Yamaguchi

    2024/11/17

  50. Influence of Content and Distribution of Water on Friction of Sports Textiles

    Shoma Kobayashi, Toshiaki Nishi, Tatsufumi Matsumoto, Manami Koshida, Takeshi Yamaguchi

    2024/11/17

  51. 液体潤滑下におけるゴムブロックの高摩擦化に関する研究 Invited

    Takeshi Yamaguchi, Arata Ishizako, Aoi Nishimoto, Toshiaki Nishi

    2024/10/30

  52. Study on High Friction Phenomena for Hydrogel Covered by Mesh Sheet under liquid lubrication

    Shin Ito, Toshiaki Nishi, Takeshi Yamaguchi

    2024/10/30

  53. Influence of Viscoelastic Properties on Friction Force and Strain Distribution in Sliding Friction between Rubber and Resin Sphere

    Tomohiro Nomoto, Kyouhei Ueno, Toshiaki Nishi, Shinya Sugisawa, Kentarou Hanzawa, Daiki Shin, Ken Yamaguchi, Isao Kuwayama, Takeshi Yamaguchi

    2024/10/30

  54. Relationship between Strain Distribution and Normal Load for Friction between Rubber and Resin Sphere

    Kyouhei Ueno, Tomohiro Nomoto, Toshiaki Nishi, Shinya Sugisawa, Kentarou Hanzawa, Daiki Shin, Ken Yamaguchi, Isao Kuwayama, Takeshi Yamaguchi

    2024/10/30

  55. Influence of Amount and Concentration of Ethanol Aqueous Solution on the Friction between Paper Wiper and Glass Plate

    Toshiaki Nishi, Takeshi Yamaguchi

    2024/10/30

  56. Effect of Groove Shape on Friction of Rubber Block under Lubrication

    Aoi Nishimoto, Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    2024/09/22

  57. Study of High-Friction Rubber Treads Using Negative Fluid Pressure Generated in An Expansion Gap

    Arata Ishizako, Aoi Nishimoto, Toshiaki Nishi, Takeshi Yamaguchi

    2024/09/22

  58. Introduction of low-friction layer inside sanitary products intended to friction-induced skin irritation

    Kenta Matsui, Toshiaki Nishi, Rina Itoh, Mihoko Kuramochi, Masaya Fujita, Takeshi Yamaguchi

    2024/09/22

  59. Frictional Behavbior of Paper Wiper in Partially Wet Conditions: Significance of Three Dimenstional Wetting

    Shoma Kobayashi, Toshiaki Nishi, Takeshi Yamaguchi

    49th Leeds-Lyon Symposium on Tribology　2024/09/02

  60. High friction of rubber caused by negative fluid pressure under glycerol lubrication and its underlying mechanism

    Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    49th Leeds-Lyon Symposium on Tribology　2024/09/03

  61. Experimental measurement of strain distribution in silicone rubber bulk during friction against a stainless-steel sphere

    Toshiaki Nishi, Kyohei Ueno, Tomohiro Nomoto, Shinya Sugisawa, Daiki Shin, Ken Yamaguchi, Isao Kuwayama, Takeshi Yamaguchi

    49th Leeds-Lyon Symposium on Tribology　2024/09/04

  62. Comparison of ground reaction force, stride length, and toe clearance during straight walking between young and older adults

    Toshiaki Nishi, Masaki Tomosada, Hide Matsumoto, Yoshihiro Sasaki, Ryota Sakurai, Takeshi Yamaguchi

    22nd Trennial Congress of the International Ergonomics Association　2024/08/28

  63. Measurement of ground reaction force, stride length, and toe clearance during straight walking using sole sensor system

    Hide Matsumoto, Masaki Tomosada, Toshiaki Nishi, Yoshihiro Sasaki, Takeshi Yamaguchi

    22nd Trennial Congress of the International Ergonomics Association　2024/08/28

  64. Effect of age-related gait change on slip- or trip-induced falls during walking under different foot-floor friction conditions: A computational study using a neuromusculoskeletal model

    Takeshi Yamaguchi, Naoto Izumi, Toshiaki Nishi, Takashi Yoshida, Kei Masani

    22nd Trennial Congress of the International Ergonomics Association　2024/08/28

  65. Air-driven Spiral Scaffold Mechanism for a Group of Microrobots Working Together in the Intestine

    Towa Tanada, Noriko Tsuruoka, Mitsuhiro Fujishiro, Yosuke Tsuji, Fumihito Arai, Takeshi Yamaguchi, Toshiaki Nishi, Yoichi Haga

    2024/07/15

  66. Development of shoes with ultra lightweight and high slip resistance ensured by an unisole structure of cross-linked resin foam Invited

    Toshiaki Nishii, Takeshi Yamaguchi, Kei Shibata, Kenichi Harano, Kazuo Hokkirigawa

    2024/05/28

  67. Friction behavior of rubbers with different viscoelastic properties against a steel sphere

    Chiharu Yoshihara, Toshiaki Nishi, Miki Kyo, Yoshihisa Inoue, Tomohiro Kondo, Takeshi Yamaguchi

    2024/05/27

  68. Effect of orientation of rectangular rubber block relative to sliding direction on friction and fluid pressure under glycerin lubrication

    Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    2024/05/27

  69. Influence of lubricant condition on strain distribution in silicone rubber bulk during friction against a stainless-steel sphere

    Toshiaki Nishi, Kyohei Ueno, Tomohiro Nomoto, Shinya Sugisawa, Daiki Shin, Ken Yamaguchi, Isao Kuwayama, Takeshi Yamaguchi

    2024/05/27

  70. 粗面上でのゴムの摩擦に及ぼすひずみの影響 Invited

    西駿明

    精密工学会第12回ナノ精度チャンネル　2024/01/25

  71. ひずみを伴うゴムの摩擦発現メカニズム Invited

    Toshiaki Nishi

    2023/12/14

  72. ゴム摩擦における材料内部でのひずみ分布可視化技術の開発 Invited

    Toshiaki Nishi

    2023/12/12

  73. Effect of Foot-floor Friction on Slip- or Trip-induced Falls during Walking

    Naoto Izumi, Toshiki Nishi, Kei Masani, Takeshi Yamaguchi

    2023/11/12

  74. Study on the Effect of Finger-Ball Friction on Fastball Pitching in Baseball

    Souta Suzuki, Shinnosuke Suzuki, Toshiaki Nishi, Daiki Nasu, Takehiro Fukuda, Takeshi Yamaguchi

    2023/11/11

  75. Study on Gait Analysis of Yong and Older Adults Using Sole Sensor System

    Masaki Tomosada, Hide Matumoto, Toshiaki Nishi, Yoshihiro Sasaki, Ryota Sakurai, Takeshi Yamaguchi

    2023/11/11

  76. 紙と平滑ガラス板間の摩擦に及ぼす水添加の影響

    Shoma Kobayashi, Toshiaki Nishi, Takeshi Yamaguchi

    2023/10/30

  77. アスファルト路面の摩擦におけるゴム表面のひずみ分布計測手法に関する研究

    Kyohei Ueno, Tomohiro Nomoto, Toshiaki Nishi, Shinya Sugisawa, Daiki Shin, Takeshi Yamaguchi

    2023/10/30

  78. 油潤滑下の摩擦に及ぼすゴムブロックの硬度の影響

    Hide Matsumoto, Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    2023/10/30

  79. Influences of Wettability and Geometry on Adhesion Force between Sportswear Fabric and Artificial Skin

    Toshiaki Nishi, Atsushi Matsumura, Manami Koshida, Tatsufumi Matsumoto, Takeshi Yamaguchi

    9th International Tribology Conference, Fukuoka 2023　2023/09/27

  80. In-plane strain distribution of rubber surface sliding over asphalt block

    Kyohei Ueno, Jiro Oda, Toshiaki Nishi, Shinya Sugisawa, Daiki Shin, Takeshi Yamaguchi

    9th International Tribology Conference, Fukuoka 2023　2023/09/28

  81. Effect of Hardness of Rubber Block on Friction under Oil Lubrication

    Hide Matsumoto, Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

    9th International Tribology Conference, Fukuoka 2023　2023/09/28

  82. Effects of Water Addition on Friction Coefficient between Paper and Flat Glass Plate

    Shoma Kobayashi, Toshiaki Nishi, Takeshi Yamaguchi

    2023/09/23

  83. Development of High Slip-Resistant Footwear Outsole Using Rubber Surface Filled with Activated Carbon/Sodium Chloride

    Toshiaki Nishi, Takeshi Yamaguchi

    2023/09/23

  84. High-friction design of shoe soles and its underlying mechanisms

    Takeshi Yamaguchi, Arata Ishizako, Hide Matsumoto, Toshiaki Nishi

    Slips, Trips, and Falls International Conference 2023　2023/06/01

  85. Study on In-plane Strain Distribution of Rubber Surface Sliding over Asphalt Block

    Takeshi Yamaguchi, Kyohei Ueno, Jiro Oda, Toshiaki Nishi, Shinya Sugisawa, Daiki Shin

    2023/05/29

  86. Effect of Water Addition on Friction between Paper and Flat Glass

    Toshiaki Nishi, Takeshi Yamaguchi

    2023/05/29

  87. Study on prevention of stickiness by reduction of adhesion between textile and skin

    Atsushi Matsumura, Toshiaki Nishi, Takeshi Yamaguchi

    2022/11

  88. Experimental method to quantify the planar distribution of slip resistance contribution for shoes

    Toshiaki Nishi

    International Conference on Slips, Trips, and Falls Sendai 2022　2022/07/22

  89. Increased Friction under a Water-lubricated Condition by Adding Sodium Chloride to Rubber

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

    7th World Tribology Congress　2022/07/13

  90. non

    Shi Watanabe, Toshiaki Nishi, Akihide Miyazaki, Junichiro Tateishi

    2022/05/30

  91. Friction Behavior of Rubber Containing Silicone Powder under Water lubricated Condition

    Toshiaki Nishi

    2022/05/23

  92. High friction effect on a wet floor by adding activated carbon to rubber sole

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

    International Ergonomics Association 21st Triennial Congress　2021/06/17

  93. Behaviour between an Artificial Skin and a Glass Plate under Unlubricated and Partly/Completely Water-lubricated Conditions

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

    5th International Conference of Biotribology 2020　2021/04/26

  94. Slip resistance mechanism and material design of sports shoes Invited

    Toshiaki Nishi

    2021/04/23

  95. Research and development of rubber for high slip resistance soles focusing on wettability Invited

    Toshiaki Nishi

    2021/02/25

  96. 衝突を伴う熱可塑性ウレタンの摩耗挙動

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

    2020/11/12

  97. 水滴もしくは気泡が介在する不均一な濡れにおけるゴムの摩擦挙動

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

    2020/11/12

  98. Shoe sole tribology Invited

    Toshiaki Nishi

    2020/10/23

  99. Introduction of research on slip resistance of soles Invited

    Toshiaki Nishi

    2019/12/16

  100. スポーツ用シューズ部材の接着評価手法

    星野裕樹, 西駿明, 野々川舞

    第30回エラストマー討論会　2019/12/10

  101. Relationship between friction behavior of silicone rubber with PVA hydrogel additions and PVA hydrogel content under a water-lubricated condition

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

    International Tribology Conference Sendai 2019　2019/09/18

  102. High friction effect of silicone rubber with PVA hydrogel additions under a water-lubricated condition

    Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

    International Tribology Conference Sendai 2019　2019/09/17

  103. Rubber Wear Mechanism Discussion Based on the Relationship between the Wear Resistance and the Tear Resistance with Consideration of the Strain Rate Effect

    Toshiaki Nishi

    22nd International Conference on Wear of Materials　2019/04/16

  104. Research and application of sole grip design Invited

    Toshiaki Nishi

    2019/01/24

  105. 粗面上でのゴムの摩擦挙動に及ぼす粘弾性の影響

    Toshiaki Nishi

    2018/11/29

  106. 粗面上でのゴムの摩擦挙動に及ぼす粘弾性の影響

    Toshiaki Nishi

    2018/11/29

  107. スキン層を有する架橋発泡樹脂の摩耗に及ぼす気孔分布の影響

    Toshiaki Nishi

    2018/11/07

  108. ゴムとガラスの摩擦における摩擦挙動と撥水挙動の関係

    Toshiaki Nishi

    2018/05/21

  109. 大気中無潤滑下における発泡樹脂材料の摩擦に及ぼす気孔率の影響

    高橋基, 柴田圭, 森安健太, 西駿明, 西脇剛史, 堀切川一男

    第8回トライボロジー秋の学校　2017/12/07

  110. スポーツシューズ用アウターソール材料としての熱可塑性ポリウレタンの摩擦・摩耗に及ぼす相手面表面粗さの影響

    佐藤丞, 北秀貴, 山口健, 柴田圭, 森安健太, 西駿明, 西脇剛史, 堀切川一男

    第8回トライボロジー秋の学校　2017/12/07

  111. 熱可塑性ポリウレタンブロックの大気中無潤滑下における摩擦・摩耗に及ぼす相手面表面粗さの影響

    佐藤丞, 北秀貴, 山口健, 柴田圭, 森安健太, 西駿明, 西脇剛史, 堀切川一男

    トライボロジー会議2017秋高松　2017/11/15

  112. 潤滑下ゴム/ガラス接触過程の接触状態に及ぼす接近速度とゴムの形状及び弾性率の影響

    Toshiaki Nishi, Kenta Moriyasu, Tsuyoshi Nishiwaki

    2017/11/15

  113. In-situ Measurement of Dewetting Behavior on Rubber-Glass interface

    Toshiaki Nishi, Kenta Moriyasu, Tsuyoshi Nishiwaki

    World Tribology Congress 2017 Beijing　2017/09/17

  114. Influences of Viscosities on Crack Propagation of Rubber

    Toshiaki Nishi, Kenta Moriyasu, Tsuyoshi Nishiwaki

    International Rubber Conference Kitakyushu 2016, Kokura　2016/11/24

  115. 光干渉法と全反射法に基づくゴム-ガラス接触状態のin-situ 測定手法

    Toshiaki Nishi, Kenta moriyasu, Tsuyoshi Nishiwaki

    2016/05/23

  116. Influence of Dewettability on Rubber Friction Properties with Different Surface Roughness under Water/Ethanol/Glycerol Lubricated Conditions

    Toshiaki Nishi, Kenta Moriyasu, Kenichi Harano, Tsuyoshi Nishiwaki

    International Tribology Conference 2015 Tokyo　2015/09/16

  117. 氷上におけるゴムの摩擦特性に及ぼす表面粗さの影響

    Toshiaki Nishi, Kenta Moriyasu, Tsuyoshi Nishiwaki

    2015/05/27

  118. ゴムの摩耗に及ぼす粘弾性の影響

    Toshiaki Nishi, Kenta Moriyasu, Kenichi Harano, Tsuyoshi Nishiwaki

    2014/11/05

  119. 水/エタノール/グリセリン潤滑下におけるゴムの摩擦特性に及ぼす表面自由エネルギーと表面粗さの影響

    Toshiaki Nishi, Kenta Moriyasu, Kenichi Harano, Tsuyoshi Nishiwaki

    2014/05/19

  120. シューズアウターソールの耐摩耗性設計に向けた基礎研究

    Toshiaki Nishi, Kenta Moriyasu, Kenichi Harano, Tsuyoshi Nishiwaki

    2013/11/08

  121. 水/エタノール/グリセリン潤滑下におけるゴムの摩擦特性に及ぼす表面自由エネルギーと粘度の影響

    Toshiaki Nishi, Kenta Moriyasu, Kenichi Harano, Tsuyoshi Nishiwaki

    2013/10/23

  122. 水/エタノール潤滑下におけるゴムの摩擦特性

    Toshiaki Nishi, Kenta Moriyasu, Kenishi Harano, Tsuyoshi Nishiwaki

    2013/05/20

  123. ゴム材料の摩擦特性における表面自由エネルギーの影響

    Toshiaki Nishi, Kenta Moriyasu, Kenichi Harano, Tsuyoshi Nishiwaki

    2012/10/30

  124. Syntheses and Physical Properties of Radical Cation Salts of 2-(Thiopyran-4-ylidene)-4,5-ethylenedithio-1,3-dithiole (TP-EDTT) with Octahedral and Tetrahedral Anions

    Toshiaki Nishi, Yoshiaki Nakano, Mikio Uruishi, Kyuya Yakushi, Masanobu Shirai, Koichiro Tanaka, Hideki Yamochi

    The 10th Japan-China Joint Symposium on Conduction and Photoconduction in Organic Solids and Related Phenomena, Kyoto　2010/10/17

  125. 低対称性ドナー分子 TP-EDTT が与える電荷移動錯体の構造と物性

    Toshiaki Nishi, Yoshiaki Nakano, Mikio Uruishi, Kyuya Yakushi, Masanobu Shirai, Koichiro Tanaka, Hideki Yamochi

    2010/09/14

  126. Synthesis and Physical Properties of Radical Cation Salts of 2-(Thiopyran-4-ylidene)-4,5-ethylenedithio-1,3-dithiole (TP-EDTT)

    Toshiaki Nishi, Yoshiaki Nakano, Hideki Yamochi

    International Conference on Science and Technology of Synthetic Metals 2010, Kyoto　2010/07/04

  127. TP-EDTT をドナーとする陽イオンラジカル塩の合成およびその構造，物性に関する研究

    Toshiaki Nishi, Yoshiaki Nakano, Mikio Uruishi, Kyuya Yakushi, Masanobu Shirai, Koichiro Tanaka, Hideki Yamochi

    2009/09/21

  128. Synthesis and investigation of charge-transfer complexes of a donor molecule, TP-EDTT (2-(thiopyran-4-ylidene)-4,5-ethylenedithio-1,3-dithiole)

    Toshiaki. Nishi, Yoshiaki Nakano, Hideki Yamochi

    The 8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets, Niseko　2009/07/04

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Research Projects 6

  1. 放射光で切り拓くゴム摩擦の学理創成と革新的材料開発

    Toshiaki Nishi

    System: Fusion oriented research for disruptive science and technology

    Institution: Tohoku University

    2024/10 - 2032/03

  2. 摩擦力の大きさと方向を制御するためのひずみ干渉原理の確立

    西 駿明, 山口 健

    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

    2026/04 - 2029/03

  3. 不均一な濡れが拓くテキスタイル摩擦の新学理と設計指針

    西 駿明

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 挑戦的研究(萌芽)

    Institution: 東北大学

    2026/06 - 2028/03

  4. Challenge to development of an innovative slip resistance evaluation system based on the estimation of the friction coefficient using images of shoe soles and floor surfaces

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

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

    Institution: Tohoku University

    2024/06 - 2026/03

  5. 粗面との摩擦におけるゴムの3次元ひずみ分布可視化による超高摩擦ゴムの設計指針確立

    Toshiaki Nishi

    Institution: Tohoku University

    2024/04 - 2026/03

  6. 部分的な水潤滑下でのソフトマテリアルの高摩擦発現のメカニズム解明と制御技術の開発

    西 駿明

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 研究活動スタート支援

    Institution: 東北大学

    2023/08 - 2025/03

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