School of Mechanical Engineering Southwest Jiaotong University Chengdu 610031 ChinaSchool of Mechanical Engineering University of Leeds Leeds LS29JT UK;
State Key Laboratory of Tribology Tsinghua University Beijing 100084 China;
State Key Laboratory of Tribology Tsinghua University Beijing 100084 China;
State Key Laboratory of Tribology Tsinghua University Beijing 100084 China;