• 文献标题:   Creation of Graphene Plasmons Vortex via Cross Shape Nanoantennas Under Linearly Polarized Incidence
  • 文献类型:   Article
  • 作  者:   ZHU BF, REN GB, GAO YX, WU BL, LIAN YD, JIAN SS
  • 作者关键词:   graphene, plasmons vortex, nanoantenna
  • 出版物名称:   PLASMONICS
  • ISSN:   1557-1955 EI 1557-1963
  • 通讯作者地址:   Beijing Jiaotong Univ
  • 被引频次:   3
  • DOI:   10.1007/s11468-016-0336-9
  • 出版年:   2017

▎ 摘  要

In this paper, we propose a method of creating plasmons vortex on graphene through cross shape nanoantennas under linearly polarized incidence. For each cross shape antenna, the linearly polarized incidence can be coupled to a near-field plasmons vortex on graphene through antenna resonances. When multiple antennas are arranged into a closed circular array, the sign of topological charge of plasmons vortex can be controlled by the linearly polarized direction of incident light with the distribution of absolute field component exhibiting a non-ideal donut profile. The creating of plasmons vortex on graphene may provide new possibilities in various applications, such as the nanoparticles trapping.