Influences of out-of-plane elastic energy and thermal effects on friction between graphene layers

doi:10.1063/1.5083883

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	Influences of out-of-plane elastic energy and thermal effects on friction between graphene layers
	Dong, Yun 1,2,3,4; Wang, Fuqiang 1; Zhu, Zongxiao 1; He, Tianjing 1
刊名	AIP ADVANCES
	2019-04
卷号	9 期号:4
关键词	Activation energy Elastic deformation Energy dissipation Graphene Molecular dynamics Springs (components) Stiffness Different layers Elastic energy Exponential dependence Graphene layers Increasing temperatures Non-monotonic variation Suspended graphene Thermal activation effect
ISSN号	2158-3226
DOI	10.1063/1.5083883
英文摘要	Through molecular dynamic simulations, a system for investigating the contributions of elastic deformation energy and thermal activation effects to friction has been constructed. In this system, a graphene flake slides on a suspended graphene layer anchored on a bed of springs. The "graphene-spring" system provides a useful ideal approach to model different layers of graphene through changing the stiffness of the springs. The results first indicate that both the friction force and the elastic deformation energy have an exponential dependence on the support stiffness. Second, the observed non-monotonic variation in friction manifested by peaks and plateaus with increasing temperature results from the changing rate of energy dissipation due to the transition of slip regimes. Therefore, we suggest that the friction force emanates from the competition between the interfacial energy barrier and out-of-plane elastic deformation energy, as well as the competition between the thermal activation effects and transition of slip regimes. Therefore, the observation can extend the validity of the Prandtl-Tomlinson model on friction phenomena. Our simulations are intended to provide theoretical guidance when considering the influence of stiffness on the friction between graphene layers in the design of nanodevices. (c) 2019 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
资助项目	Scientific Research Projects of Institutions of Higher Learning of Gansu Province, China[2017A015]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000466614700081
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32016]
专题	机电工程学院
通讯作者	Dong, Yun
作者单位	1.Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Gansu, Peoples R China 2.Southeast Univ, Sch Mech Engn, Nanjing 211189, Jiangsu, Peoples R China 3.Southeast Univ, Jiangsu Key Lab Design & Mfg Micronano Biomed Ins, Nanjing 211189, Jiangsu, Peoples R China 4.Vanderbilt Univ, Dept Mech Engn, Nashville, TN 37235 USA
推荐引用方式 GB/T 7714	Dong, Yun,Wang, Fuqiang,Zhu, Zongxiao,et al. Influences of out-of-plane elastic energy and thermal effects on friction between graphene layers[J]. AIP ADVANCES,2019,9(4).
APA	Dong, Yun,Wang, Fuqiang,Zhu, Zongxiao,&He, Tianjing.(2019).Influences of out-of-plane elastic energy and thermal effects on friction between graphene layers.AIP ADVANCES,9(4).
MLA	Dong, Yun,et al."Influences of out-of-plane elastic energy and thermal effects on friction between graphene layers".AIP ADVANCES 9.4(2019).