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04-07-2023

Stepped graphene-covered plasmonic dipole antenna for detecting \(\text {NO}_2\) gas at mid-infrared frequencies

Authors: Mohammad Mahdi Ghods, Majid Afsahi

Published in: Journal of Computational Electronics | Issue 4/2023

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Abstract

In this paper, a graphene-based plasmonic antenna is presented to operate as a gas senor based on chemical doping. The proposed structure has a periodic geometry. The principle design is based on manipulating the dipole plasmonic antenna geometry to enhance the electric field in the gap of the antenna as a small change of graphene Fermi energy because of the molecules adsorption results in a significant shift of the resonance wavelength of the diffraction spectrum. The results demonstrate that the proposed sensor enables the detection of \(\text {NO}_2\) gas by around 1160 molecules with steps of 15.07 nm of the resonance wavelength shifts in the transmission spectrum. It is believed that this sensing structure could open a new window to realize a variety of graphene-based photonic sensors, for potential applications in the fields of biology, medicine, and chemistry.

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Literature
20.
go back to reference Xiao, S., et al.: Active metamaterials and metadevices: a review. J. Phys. D Appl. Phys. 53, 503002 (2020)CrossRef Xiao, S., et al.: Active metamaterials and metadevices: a review. J. Phys. D Appl. Phys. 53, 503002 (2020)CrossRef
Metadata
Title
Stepped graphene-covered plasmonic dipole antenna for detecting gas at mid-infrared frequencies
Authors
Mohammad Mahdi Ghods
Majid Afsahi
Publication date
04-07-2023
Publisher
Springer US
Published in
Journal of Computational Electronics / Issue 4/2023
Print ISSN: 1569-8025
Electronic ISSN: 1572-8137
DOI
https://doi.org/10.1007/s10825-023-02057-1