• 文献标题:   Spatially Dependent Lattice Deformations for Dislocations at the Edges of Graphene
  • 文献类型:   Article
  • 作  者:   GONG CC, HE K, ROBERTSON AW, YOON E, LEE GD, WARNER JH
  • 作者关键词:   graphene, ripple, dislocation, defect, tem
  • 出版物名称:   ACS NANO
  • ISSN:   1936-0851 EI 1936-086X
  • 通讯作者地址:   Univ Oxford
  • 被引频次:   9
  • DOI:   10.1021/nn505996c
  • 出版年:   2015

▎ 摘  要

We show that dislocations located at the edge of graphene cause different lattice deformations to those located in the bulk lattice. When a dislocation is located near an edge, a decrease in the rippling and increase of the in-plane rotation occurs relative to the dislocations in the bulk. The increased in-plane rotation near the edge causes bond rotations at the edge of graphene to reduce the overall strain in the system. Dislocations were highly stable and remained fixed in their position even when located within a few lattice spacings from the edge of graphene. We study this behavior at the atomic level using aberration-corrected transmission electron microscopy. These results show detailed information about the behavior of dislocations in 2D materials and the strain properties that result.