• 文献标题:   Plasmonic absorption enhancement in graphene circular and elliptical disk arrays
  • 文献类型:   Article
  • 作  者:   LIN H, YE X, CHEN XF, ZHOU ZG, YI Z, NIU G, YI YG, HUA YT, HUA JJ, XIAO SY
  • 作者关键词:   fdtd method, metamaterial, graphene surface plasmon, absorption enhancement
  • 出版物名称:   MATERIALS RESEARCH EXPRESS
  • ISSN:   2053-1591
  • 通讯作者地址:   Southwest Univ Sci Technol
  • 被引频次:   21
  • DOI:   10.1088/2053-1591/aafc3e
  • 出版年:   2019

▎ 摘  要

In this paper, a periodical array composed of patterned circular and elliptical disk graphene resonators on a silicon substrate spaced by a silicon dioxide dielectric layer is presented. Our research shows that the graphene arrays exhibit three absorption peaks of 16% at 26 pm, 30% at 31 mu m and 34% at 45 mu m. The absorption performance of our structure can be improved by changing the structural parameters of the graphene layer (we studied the different structural parts of the model, the size and proportion of their values respectively), dielectric multiplier and Fermi energy level. According to our conception, the proposed structure can be used in the far infrared spectrum detector, filter and sensor.