• 文献标题:   Role of wrinkle height in friction variation with number of graphene layers
  • 文献类型:   Article
  • 作  者:   YE ZJ, TANG C, DONG YL, MARTINI A
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF APPLIED PHYSICS
  • ISSN:   0021-8979 EI 1089-7550
  • 通讯作者地址:   Univ Calif Merced
  • 被引频次:   47
  • DOI:   10.1063/1.4768909
  • 出版年:   2012

▎ 摘  要

Molecular dynamics simulations are performed to study the frictional behavior of graphene. It is found that the friction between a diamond tip and graphene decreases with increasing number of graphene layers. This behavior is also affected by the graphene sheet size; specifically, the effect of the number of layers on friction becomes significant only when the modeled graphene sheets exceed a critical length. We further show that the frictional behavior can be directly correlated to the height of near-contact wrinkles that resist sliding. These observations are rationalized in terms of the ability of multiple sheets to act as a single material as they resist wrinkle formation. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4768909]