• 文献标题:   Synergistic effects of grain boundaries and edges on fatigue deformations of sub-5 nm graphene nanoribbons
  • 文献类型:   Article
  • 作  者:   YANG Z, HUANG YH, BAO HW, XU KW, MA F
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS SCIENCE
  • ISSN:   0022-2461 EI 1573-4803
  • 通讯作者地址:   Xi An Jiao Tong Univ
  • 被引频次:   1
  • DOI:   10.1007/s10853-017-1269-1
  • 出版年:   2017

▎ 摘  要

Polycrystalline graphene nanoribbons usually experience a brittle rupture before failure, and the irreversible breaking occurs in grain boundaries (GBs). In this paper, molecular dynamic simulations are conducted to study the fatigue properties of bi-crystal graphene nanoribbons under a periodic in-plane compression. It is found that ribbon edges rather than GBs dominate the dynamic stability when the ribbon width is smaller than 5 nm. The fatigue failure is closely related to the misorientation angle between two grains because of the distinct edge energy. It always starts from the edges with higher energy and results in a localized damage at the edges.