Excellent sensing based on dual-plasmon induced transparency in graphene metasurface

Focusing on the realization of excellent sensing for graphene-based metasurface in the terahertz band. A planar monolayer graphene metasurface is proposed for sensing. Dual plasmon induced transparency (dual-PIT) phenomenon is realized in our proposed metasurface by use of the finite-difference time...

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Bibliographic Details
Published inPhysica. E, Low-dimensional systems & nanostructures Vol. 134; p. 114850
Main Authors Cui, Wei, Li, Chunjiang, Ma, Huqiang, Xu, Hui, Yi, Zao, Ren, Xincheng, Cao, Xinliang, He, Zhihui, Liu, Zhimin
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.10.2021
Subjects
Graphene
Plasmon induced transparency
Plasmonic
Sensing
Sensing
Plasmon induced transparency
Graphene
Plasmonic
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Summary:Focusing on the realization of excellent sensing for graphene-based metasurface in the terahertz band. A planar monolayer graphene metasurface is proposed for sensing. Dual plasmon induced transparency (dual-PIT) phenomenon is realized in our proposed metasurface by use of the finite-difference time-domain (FDTD) method. This dual-PIT transmission spectrum can be effectively modulated by Fermi energies and positional parameters, and triple-PIT phenomenon can be realized. Interestingly, the excellent sensing performance can be achieved in terahertz band. The maximum sensitivity and Figure of Merit (FOM) are of 4.1884 THz/RIU and 43.31, respectively. These results may play an important role for designing excellent plasmonic graphene-based modulators and sensors in terahertz.
ISSN:1386-9477
1873-1759
DOI:10.1016/j.physe.2021.114850