• 文献标题:   Tunable subwavelength strong absorption by graphene wrapped dielectric particles
  • 文献类型:   Article
  • 作  者:   YANG B, WU T, YANG Y, ZHANG XD
  • 作者关键词:   graphene, plasmon, absorption, nanoparticle
  • 出版物名称:   JOURNAL OF OPTICS
  • ISSN:   2040-8978 EI 2040-8986
  • 通讯作者地址:   Beijing Inst Technol
  • 被引频次:   8
  • DOI:   10.1088/2040-8978/17/3/035002
  • 出版年:   2015

▎ 摘  要

The optical absorption properties of graphene-wrapped dielectric particles have been investigated within the framework of the Mie theory. It is shown that subwavelength strong absorption in infrared spectra can take place in such systems due to the excitation of plasmon resonance in graphene. The absorption characteristics and efficiency are tunable by either varying the Fermi level and the damping constant of graphene, or by changing the size and the dielectric constant of small particles. These characteristics also depend on the separation distance between particles in the cluster. These extreme light resonances and absorptions in graphene-wrapped nanostructures have great potential for optoelectronic devices.