Friction anisotropy dependence on lattice orientation of graphene  

作　　者：ZHANG Yu LIU LianQing XI Ning WANG YueChao DONG ZaiLi WEJINYA Uchechukwu C 

机构地区：[1]State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]Department of Mechanical and Biomedical Engineering, City University of HongKong [4]Department of Mechanical Engineering, University of Arkansas,Fayetteville, Arkansas 72701, USA

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第4期663-667,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National High Technology Research and Development Program of China(Grant No.2009AA03Z316);the National Natural Science Foundation of China(Grant Nos.60904095,51050110445 and 61175103);the CAS FEA International Partnership Program for Creative Research Teams

摘　　要：The observation of friction anisotropy on graphene by friction measurement at atomic scale has been reported in this paper.Atomic-scale friction measurement revealed friction anisotropy with a periodicity of 60°,which is consistent with the hexagonal periodicity of the graphene.Both experiments and theory show that the value of the friction force is related to the graphene lattice orientation,and the friction force along armchair orientation is also larger than the one along zigzag orientation.These results will play a critical role in the use of graphene to manufacture nanoscale devices.The observation of friction anisotropy on graphene by friction measurement at atomic scale has been reported in this paper.Atomic-scale friction measurement revealed friction anisotropy with a periodicity of 60°,which is consistent with the hexagonal periodicity of the graphene.Both experiments and theory show that the value of the friction force is related to the graphene lattice orientation,and the friction force along armchair orientation is also larger than the one along zigzag orientation.These results will play a critical role in the use of graphene to manufacture nanoscale devices.

关 键 词：GRAPHENE friction anisotropic lattice orientation 

分 类 号：O482.1[理学—固体物理]