Energy dissipation mechanism of commensurate graphene layers  

作　　者：HUO ZhanLei CHEN Yang GUO ZhengRong CHANG TienChong 

机构地区：[1]Shanghai Key Laboratory of Mechanics in Energy Engineering,Shanghai Institute of Applied Mathematics and Mechanics,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200072,China

出　　处：《Science China(Technological Sciences)》2021年第3期635-640,共6页中国科学（技术科学英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.11602132,11425209 and 11872238);the Innovation Program of Shanghai Municipal Education Commission(Grant No.2017-01-07-00-09-E00019);the Program of Shanghai Academic Research Leader(Grant No.19XD1401500)。

摘　　要：The energy dissipation mechanism of graphene layers in commensurate contact is studied by molecular dynamics simulations.The commensurability between graphene layers is controlled by misfit angles between graphene layers or an in-plane strain applied to one of the graphene layers.We find that for small size graphene,the main energy dissipation is not caused by stick-slip.We propose two potential energy dissipation channels,the lattice distortion induced by the moirésuperlattice structure and variation of entropy of the contacting landscape.Our results provide an insight into the energy dissipation mechanism of commensurate contact graphene.

关 键 词：GRAPHENE COMMENSURATE energy dissipation molecular dynamics misfit angle 

分 类 号：TQ127.11[化学工程—无机化工]