TOHOKU UNIVERSITY Researchers - Toshiaki Nishi

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Toshiaki Nishi

Section

Graduate School of Engineering

Job title

Associate Professor

Degree

博士（工学）（東北大学）
修士（理学）（京都大学）

researchmap

https://researchmap.jp/ToshiakiNishi

J-GLOBAL ID

202101016494146590

ORCID

https://orcid.org/0000-0002-5403-8528

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 2

日本トライボロジー学会　2025秋函館実行委員会

2024/07 - Present
日本トライボロジー学会　編集委員会

2023/06 - Present

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 8

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
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
優秀発表賞

2024/05　Japan Society for Design Engineering
President's award

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

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

2013/11　Japanese Society of Tribology
Excellent poster award

2012/11　Japanese Society of Tribology

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Papers 36

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

Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

Tribology International　2025/05

DOI： 10.1016/j.triboint.2025.110531 　
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)　2025/03/27
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41598-025-93632-y 　

eISSN： 2045-2322
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
Influence of the surface free energy of liquids and the liquid distribution on the friction of paper wipers Peer-reviewed

Toshiaki Nishi, Takeshi Yamaguchi

Friction　13　9440970　2024/12

DOI： 10.26599/frict.2025.9440970 　

ISSN： 2223-7690 2223-7704
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

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

Toshiaki Nishi

69　(2)　111-116　2024/02
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
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 　
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
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.
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
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
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
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
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
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
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
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
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
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
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
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
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
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 　
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

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<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>
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

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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.
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
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

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Books and Other Publications 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 93

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
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
Quantification of Strain Distribution in Rubber Bulk During Friction Using Synchrotron Invited

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

79th STLE Annual Meeting & Exhibition　2025/05/18
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
ゴムの摩擦の基礎と最新の研究事例 Invited

Toshiaki Nishi

2025/01/15
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
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
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
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
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
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
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
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
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
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
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
Study on High Friction Phenomena for Hydrogel Covered by Mesh Sheet under liquid lubrication

Shin Ito, Toshiaki Nishi, Takeshi Yamaguchi

2024/10/30
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
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
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
Effect of Groove Shape on Friction of Rubber Block under Lubrication

Aoi Nishimoto, Arata Ishizako, Toshiaki Nishi, Takeshi Yamaguchi

2024/09/22
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
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
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
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
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
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
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
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
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
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
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
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
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
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
ひずみを伴うゴムの摩擦発現メカニズム Invited

Toshiaki Nishi

2023/12/14
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
Effect of Foot-floor Friction on Slip- or Trip-induced Falls during Walking

Naoto Izumi, Toshiki Nishi, Kei Masani, Takeshi Yamaguchi

2023/11/12
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
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
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
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
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
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
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
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
Effects of Water Addition on Friction Coefficient between Paper and Flat Glass Plate

Shoma Kobayashi, Toshiaki Nishi, Takeshi Yamaguchi

2023/09/23
Development of High Slip-Resistant Footwear Outsole Using Rubber Surface Filled with Activated Carbon/Sodium Chloride

Toshiaki Nishi, Takeshi Yamaguchi

2023/09/23
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
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
Effect of Water Addition on Friction between Paper and Flat Glass

Toshiaki Nishi, Takeshi Yamaguchi

2023/05/29
Study on prevention of stickiness by reduction of adhesion between textile and skin

Atsushi Matsumura, Toshiaki Nishi, Takeshi Yamaguchi

2022/11
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
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
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Shi Watanabe, Toshiaki Nishi, Akihide Miyazaki, Junichiro Tateishi

2022/05/30
Friction Behavior of Rubber Containing Silicone Powder under Water lubricated Condition

Toshiaki Nishi

2022/05/23
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
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
Slip resistance mechanism and material design of sports shoes Invited

Toshiaki Nishi

2021/04/23
Research and development of rubber for high slip resistance soles focusing on wettability Invited

Toshiaki Nishi

2021/02/25
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
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
Shoe sole tribology Invited

Toshiaki Nishi

2020/10/23
Introduction of research on slip resistance of soles Invited

Toshiaki Nishi

2019/12/16
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
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
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
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
Research and application of sole grip design Invited

Toshiaki Nishi

2019/01/24
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
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
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
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
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
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
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
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
In-situ Measurement of Dewetting Behavior on Rubber-Glass interface

Toshiaki Nishi, Kenta Moriyasu, Tsuyoshi Nishiwaki

World Tribology Congress 2017 Beijing　2017/09/17
Influences of Viscosities on Crack Propagation of Rubber

Toshiaki Nishi, Kenta Moriyasu, Tsuyoshi Nishiwaki

International Rubber Conference Kitakyushu 2016, Kokura　2016/11/24
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
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
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
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
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
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
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
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
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
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
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
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
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
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 4

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: Tohiku University

2024/10 - 2032/03
靴底と床面の画像を用いた摩擦係数推定に基づく革新的耐滑性評価システム開発への挑戦

Takeshi Yamaguchi, Toshiaki Nishi, Kei Shibata

Institution: Tohiku University

2024/04 - 2026/03
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: Tohiku University

2024/04 - 2026/03
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