An atomistic investigation of the effect of strain on frictional properties of suspended graphene

We performed molecular dynamics (MD) simulations of a diamond probe scanned on a suspended graphene to reveal the effect of strain on the frictional properties of suspended graphene. The graphene was subjected to some certain strain along the scanning direction. We compared the friction coefficient...

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Main Authors:	Qingshun Bai, Xin He, Jinxuan Bai, Zhen Tong
Format:	Article
Language:	English
Published:	AIP Publishing LLC 2016-05-01
Series:	AIP Advances
Online Access:	http://dx.doi.org/10.1063/1.4949521

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record_format	Article
spelling	doaj-271754b0acf546e692441187640174222020-11-24T22:58:27ZengAIP Publishing LLCAIP Advances2158-32262016-05-0165055308055308-810.1063/1.4949521031605ADVAn atomistic investigation of the effect of strain on frictional properties of suspended grapheneQingshun Bai0Xin He1Jinxuan Bai2Zhen Tong3School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin 150001, People’s Republic of ChinaSchool of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin 150001, People’s Republic of ChinaSchool of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin 150001, People’s Republic of ChinaCentre for precision technologies, University of Huddersfield, Huddersfield, HD1 3DH, UKWe performed molecular dynamics (MD) simulations of a diamond probe scanned on a suspended graphene to reveal the effect of strain on the frictional properties of suspended graphene. The graphene was subjected to some certain strain along the scanning direction. We compared the friction coefficient obtained from different normal loads and strain. The results show that the friction coefficient can be decreased about one order of magnitude with the increase of the strain. And that can be a result of the decreased asymmetry of the contact region which is caused by strain. The synthetic effect of potential energy and the fluctuation of contact region were found to be the main reason accounting for the fluctuation of the friction force. The strain can reduce the fluctuation of the contact region and improve the stability of friction.http://dx.doi.org/10.1063/1.4949521
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Qingshun Bai Xin He Jinxuan Bai Zhen Tong
spellingShingle	Qingshun Bai Xin He Jinxuan Bai Zhen Tong An atomistic investigation of the effect of strain on frictional properties of suspended graphene AIP Advances
author_facet	Qingshun Bai Xin He Jinxuan Bai Zhen Tong
author_sort	Qingshun Bai
title	An atomistic investigation of the effect of strain on frictional properties of suspended graphene
title_short	An atomistic investigation of the effect of strain on frictional properties of suspended graphene
title_full	An atomistic investigation of the effect of strain on frictional properties of suspended graphene
title_fullStr	An atomistic investigation of the effect of strain on frictional properties of suspended graphene
title_full_unstemmed	An atomistic investigation of the effect of strain on frictional properties of suspended graphene
title_sort	atomistic investigation of the effect of strain on frictional properties of suspended graphene
publisher	AIP Publishing LLC
series	AIP Advances
issn	2158-3226
publishDate	2016-05-01
description	We performed molecular dynamics (MD) simulations of a diamond probe scanned on a suspended graphene to reveal the effect of strain on the frictional properties of suspended graphene. The graphene was subjected to some certain strain along the scanning direction. We compared the friction coefficient obtained from different normal loads and strain. The results show that the friction coefficient can be decreased about one order of magnitude with the increase of the strain. And that can be a result of the decreased asymmetry of the contact region which is caused by strain. The synthetic effect of potential energy and the fluctuation of contact region were found to be the main reason accounting for the fluctuation of the friction force. The strain can reduce the fluctuation of the contact region and improve the stability of friction.
url	http://dx.doi.org/10.1063/1.4949521
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An atomistic investigation of the effect of strain on frictional properties of suspended graphene

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