• 文献标题:   Active Control of Near-Field Coupling in a Terahertz Metal-Graphene Metamaterial
  • 文献类型:   Article
  • 作  者:   LIU TT, YI Z, XIAO SY
  • 作者关键词:   terahertz, metamaterial, graphene, near field coupling
  • 出版物名称:   IEEE PHOTONICS TECHNOLOGY LETTERS
  • ISSN:   1041-1135 EI 1941-0174
  • 通讯作者地址:   Huazhong Univ Sci Technol
  • 被引频次:   13
  • DOI:   10.1109/LPT.2017.2759143
  • 出版年:   2017

▎ 摘  要

We demonstrate an active control of near-field coupling between dark and bright eigenmodes in terahertz metamaterials. The metamaterial unit cell consists of two orthogonally twisted split-ring resonators, which are tightly coupled with each other through near field. The monolayer graphene is integrated into the unit cell and the coupling strength of the near field can be actively modulated by the manipulation of graphene conductivity via shifting its Fermi level. This letter presents a unique route toward the realization of ultrafast and active controlled near-field coupled metamaterial devices.