Welcome to Tetsuo Yamaguchi's website!

Last update: 22 Jul. 2020
日本語のサイトはこちら
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Profile
I was born in Kumamoto city, Kumamoto pref., Japan in Dec. 1971.
After working for a company, I started studying soft matter physics
at the University of Tokyo and received ph.D in 2007. After that,
I worked as a post-doc at prof. C. Creton's group of ESPCI (Paris),
worked as an assistant professor at prof. M. Doi's group in Tokyo,
and I am now working as an associate professor in Kyushu University.

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Research

1. Research interest My current interest lies in the physics of adhesion and sliding friction of soft viscoelastic materials like elastomers or gels. My approaches are phenomenology (continuum theory) and experiment (optical observation), trying to understand the dynamical process of local deformation and fracture of such materials. In future, I hope to develop fundamentals of non-equillibrium physics for the above phenomena.

Research topics
- Adesion/debonding and cavitation dymanics in soft viscoelastic materials (experiment, theory).
- Mechanism in adhesion-friction of gecko (experiment, theory).
- Pattern formation in sliding friction of sticky gels (experiment, theory).
- Laboratory experiment of fast and slow earthquakes (experiment, theory).
- Buckling phenomena in swelling process of hydrogel particles (experiment).
- Geometry, topology, and fracture of model crosslinked polymer network (experiment).
- High-precision monitoring of buckling, fracture and slip (experiment).
2. Recent publications [1] T. Yashiki, T. Morita, Y. Sawae, T. Yamaguchi, Subsonic to Intersonic Transition in Sliding Friction for Soft Solids, Physical Review Letters 124 (23), 238001 (2020).
[2] T. Yamaguchi, Y. Onoue, Y. Sawae, Topology and Toughening of Sparse Elastic Networks, Physical Review Letters 124 (6),068002 (2020).
[3] T. Yamaguchi, Reduction and Control of Friction in Hydrogels, in Surfactants in Tribology 6, CRC Press (2019).
[4] N. Itagaki, D. Kawaguchi, Y. Oda, F. Nemoto, N. L. Yamada, T. Yamaguchi, K. Tanaka, Surface Effect on Frictional Properties for Thin Hydrogel Films of Poly (vinyl ether), Macromolecules 52 (24), 9632-9638 (2019).
[5] Y. Kusaka, M. Mizukami, T. Yamaguchi, N. Fukuda, H. Ushijima, Patterning defects in high-speed reverse offset printing: lessons from contact dynamics, J. Micromech. Microeng. 29, 045001 (2019).
[6] T. Yamaguchi, C. Creton, M. Doi, Simple model on debonding of soft adhesives, Soft Matter 14, 6206-6213 (2018). (Selected as Front Cover)
[7] T. Yamaguchi, R. Sato, Y. Sawae, Propagation of Fatigue Cracks in Friction of Brittle Hydrogels, Gels 4, 53 (2018). (Selected as Feature Paper)
[8] T. G. Sano, T. Yamaguchi, H. Wada, Slip Morphology of Elastic Strips on Frictional Rigid Substrates, Physical Review Letters 118, 178001 (2017).
[9] T. Yamaguchi, Y. Sawae, S. M. Rubinstein, Effects of loading angles on stick–slip dynamics of soft sliders, Extreme Mechanics Letters 9, 331-335 (2016).
My publication list is here (Google Scholor).
3. Award [1] International Conference on Engineering Tribology and Applied Technology 2018: Best Paper Award, Nov. 2018
[2] 日本機械学会計算力学講演会 優秀講演表彰, Nov. 2018
[3] 日本機械学会2017年度年次大会「ソフトマター・イノベーション」やわらか大将(大賞), Sep. 2017
[4] Best Presentation Award, Malaysian International Tribology Conference, Nov 2015
[5] The adhesion society of Japan, Mar. 2011
[6] Journal of the Physical Society of Japan, Papers of Editors' Choice (Collaboration with Prof. Doi, Mr. Takata, May 2010)
[7] Elastomer conference, Young researcher presentation award, Dec. 2007
[8] The adhesion society of Japan, Nitto Denko Award, Poster Award, Jun. 2006
4. Recent Invited Talks
[1] T. Yamaguchi, Sliding friction of polymer gels at various sliding speeds, OKINAWA COLLOIDS 2019 (November 2019, Okinawa).
[2] 山口哲生,ネットワーク状材料を強靭化するためのトポロジカルデザイン,日本物理学会年次大会シンポジウム「しなやかなマテリアルデザイン -構造力学から折り紙,切り紙,メタマテリアルまで-」,九州大学(2019年3月).
[3] T. Yamaguchi, Topology and Toughening of Model Crosslinked Polymers, Gelsymposium 2018, Yamagata University, Yonezawa (Aug. 2018).
[4] T. Yamaguchi, Topology and fracture of network materials, Workshop on Rheology of disordered particles, Yukawa Institute for Theoretical Physics, Kyoto University (Jun. 2018).
[5] (Keynote lecture) T. Yamaguchi, Fracture of Model Polymer Networks, PRCR2018, Korea (Jun. 2018).
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Address

Tetsuo Yamaguchi, ph.D
744 Motooka, Nishi-ku, Fukuoka 819-0395 Japan
Machine Elements and Design Engineering Laboratory
Department of Mechanical Engineering,
School of Engineering, Kyushu University
Tel: +81-92-802-3072
Email: yamaguchi at mech.kyushu-u.ac.jp (Please replace "at" by "@" !)