*Jimin Xu^1,2, Haiyang Gu², Cheng Zheng¹, Naoki Yamashita², Tomoko Hirayama² (1. Hefei University of Technology, China, 2. Kyoto University, Japan)

*Haiyang Gu¹, Tomoko Hirayama¹, Naoki Yamashita¹, Nobuhiro Sato¹, Jimin Xu^1,2 (1. Kyoto University, Japan, 2. Hefei University of Technology, China)

*Yun Zhao, Hugh Spikes, Janet Wong (Tribology Group, Department of Mechanical Engineering, Imperial College London, UK)

*Wataru Yagi, Toshiyuki Tsutiya, Naoki Tamashita, Tomoko Hirayama (Kyoto University, Japan)

*Mohd Syafiq Abd Aziz^1,2, Thomas Reddyhoff¹ (1. Department of Mechanical Engineering, Imperial College London, UK, 2. Faculty of Mechanical and Manufacturing Engineering Technology, Universiti Teknikal Malaysia Melaka, Malaysia)