Terahertz band range adjustable hyperbolic metamaterial refractive index sensor

Zhiqi Li; Sixue Chen; Yizhuo Zhang; Chenghao Tong; Xiaowan Guo; Jian Shen; Chaoyang Li

Results in Physics (Jun 2023)

Terahertz band range adjustable hyperbolic metamaterial refractive index sensor

Zhiqi Li,
Sixue Chen,
Yizhuo Zhang,
Chenghao Tong,
Xiaowan Guo,
Jian Shen,
Chaoyang Li

Affiliations

Zhiqi Li: School of Information and Communication Engineering, Hainan University, Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
Sixue Chen: School of Information and Communication Engineering, Hainan University, Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
Yizhuo Zhang: School of Information and Communication Engineering, Hainan University, Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
Chenghao Tong: School of Information and Communication Engineering, Hainan University, Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
Xiaowan Guo: School of Information and Communication Engineering, Hainan University, Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
Jian Shen: School of Information and Communication Engineering, Hainan University, Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China; Corresponding authors at: School of Information and Communication Engineering, Hainan University, Haikou 570228, China.
Chaoyang Li: State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China; School of Computer Science and Technology, Hainan University, Haikou 570228, China; Corresponding authors at: School of Information and Communication Engineering, Hainan University, Haikou 570228, China.

Journal volume & issue: Vol. 49
p. 106477

Abstract

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Terahertz sensing has an important position in biochemical detection due to its unique advantages. In this work, we design a sensor with tunable analytes refractive index interval using graphene/dielectric multilayer structured hyperbolic metamaterials (GMHMM). We use the attenuated total reflection method to match the bulk high k waves mode in the GMHMM and derive dispersion relation of the bulk resonance mode in combination with waveguide mode analysis. By tuning the graphene Fermi energy level and incidence angle, the sensor can detect analytes with different refractive indices with a maximum sensitivity of 20.5 THz/RIU and an average sensitivity of 11.05 THz/RIU in the band of 2.4 THz. We believe that the proposed structure can be applied to biochemical molecule detection in the terahertz band and contribute to the development of hyperbolic metamaterial sensors from laboratory research to practical applications.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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