• 文献标题:   Tunable Terahertz Metamaterials Based on Anapole Excitation with Graphene for Reconfigurable Sensors
  • 文献类型:   Article
  • 作  者:   LIU XY, LIU ZZ, HUA M, WANG LY, WANG KF, ZHANG WW, NING YF, SHI YP, WANG XD, YANG FH
  • 作者关键词:   anapole, tunable, graphene, terahertz, metamaterial
  • 出版物名称:   ACS APPLIED NANO MATERIALS
  • ISSN:   2574-0970
  • 通讯作者地址:   Shandong Univ
  • 被引频次:   0
  • DOI:   10.1021/acsanm.0c00141
  • 出版年:   2020

▎ 摘  要

Anapole mode is excited by the destructive interference between the toroidal- and electric-dipole moments, resulting in a high-quality (Q) factor. In this paper, we designed a high-Q-factor metamaterial that shows anapole behaviors in the terahertz region. Through the introduction of graphene, the destructive interference condition is disturbed and tunability can be realized. This pattern reflects a brilliant tunability performance in which frequency movements above 250 GHz per 0.1 eV can be verified. Ingenious adjustment by the position of graphene offers the possibility of diversified tuning capabilities. Such a tunable terahertz metamaterial has great potential in reconfigurable sensors.