摘要
We study the friction properties of interlayer bonded bilayer graphene by simulating the movement of a slider on the surface of bilayer graphene using molecular dynamics.The results show that the presence of the interlayer covalent bonds due to the local sp^(3) hybridization of carbon atoms in the bilayer graphene seriously reduces the frictional coefficient of the bilayer graphene surface to 30%,depending on the coverage of interlayer sp^(3) bonds and normal loads.For a certain coverage of interlayer sp3bonds,when the normal load of the slider reaches a certain value,the surface of this interlayer bonded bilayer graphene will lose the friction reduction effect on the slider.Our findings provide guidance for the regulation and manipulation of the frictional properties of bilayer graphene surfaces through interlayer covalent bonds,which may be useful for applications of friction related graphene based nanodevices.
作者
李耀隆
田振国
尹海峰
张任良
Yao-Long Li;Zhen-Guo Tian;Hai-Feng Yin;Ren-Liang Zhang(Hebei Key Laboratory of Mechanical Reliability for Heavy Equipment and Large Structures,Yanshan University,Qinhuangdao 066004,China;School of Civil Engineering and Mechanics,Yanshan University,Qinhuangdao 066004,China)
基金
supported by the Doctor Fund and the Program of independent Research for Young Teachers of Yanshan University (Grant Nos.B919 and 020000534)。
