Laser & Optoelectronics Progress, Volume. 58, Issue 5, 0524001(2021)

Investigation of Sensing Characteristic of Graphene Metamaterial Based on Fano Resonance

Jing Zhao1, Jiaxian Wang1、*, Weibin Qiu2, and Zeyang Zhao2
Author Affiliations
  • 1School of Electronics and Electrical Engineering, Xiamen Institute of Technology, Xiamen , Fujian 361021, China
  • 2College of Information Science and Engineering, Huaqiao University, Xiamen , Fujian 361021, China
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    A terahertz biosensor based on Fano resonance is proposed. The sensor is composed of a graphene microdisk trimer structure. The finite element method is applied to investigate the transmission characteristics of the structure. Simulation results exhibit that the graphene trimer structure can excite Fano resonance. The structure yields a high sensitivity of 2 THz/RIU and a figure of merit (FOM) of 8 in the THz spectrum; the graphene chemical potential can be used to adjust the resonance peak. The band realizes the active regulation of the resonance peak. This structure provides a design idea for the ultra-sensitive terahertz sensor based on metamaterials, and has potential application value in the sensing and detection of materials with micro-nano thickness.

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    Jing Zhao, Jiaxian Wang, Weibin Qiu, Zeyang Zhao. Investigation of Sensing Characteristic of Graphene Metamaterial Based on Fano Resonance[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0524001

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    Paper Information

    Category: Optics at Surfaces

    Received: Jul. 2, 2020

    Accepted: Aug. 3, 2020

    Published Online: Apr. 19, 2021

    The Author Email: Wang Jiaxian (wangjx@hqu.edu.cn)

    DOI:10.3788/LOP202158.0524001

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