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Volume 11
Issue 6
10.3390/bios11060201
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Article

Tunable Goos-Hänchen Shift Surface Plasmon Resonance Sensor Based on Graphene-hBN Heterostructure

by
Zihao Liu
,
Fangyuan Lu
,
Leyong Jiang
,
Wei Lin
and
Zhiwei Zheng
*
School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
*
Author to whom correspondence should be addressed.
Biosensors 2021, 11(6), 201; https://doi.org/10.3390/bios11060201
Submission received: 9 May 2021 / Revised: 10 June 2021 / Accepted: 15 June 2021 / Published: 21 June 2021
(This article belongs to the Special Issue Optical Biosensor with 2D Materials and Metamaterials)
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Abstract

In this paper, a bimetallic sensor based on graphene-hexagonal boron nitride (hBN) heterostructure is theoretically studied. The sensitivity of the sensor can be improved by enhancing the Goos–Hänchen (GH) shift in the infrared band. The theoretical results show that adjusting the Fermi level, the number of graphene layers and the thickness of hBN, a GH shift of 182.09 λ can be obtained. Moreover, sensitivity of 2.02 × 105 λ/RIU can be achieved with monolayer graphene, the thickness of gold layer is 20 nm, silver layer is 15 nm, and the hBN thickness of 492 nm. This heterogeneous infrared sensor has the advantages of high sensitivity and strong stability. The research results will provide a theoretical basis for the design of a new high-sensitivity infrared band sensor.
Keywords: Goos-Hänchen (GH) shift; graphene; sensor Goos-Hänchen (GH) shift; graphene; sensor

Share and Cite

MDPI and ACS Style

Liu, Z.; Lu, F.; Jiang, L.; Lin, W.; Zheng, Z. Tunable Goos-Hänchen Shift Surface Plasmon Resonance Sensor Based on Graphene-hBN Heterostructure. Biosensors 2021, 11, 201. https://doi.org/10.3390/bios11060201

AMA Style

Liu Z, Lu F, Jiang L, Lin W, Zheng Z. Tunable Goos-Hänchen Shift Surface Plasmon Resonance Sensor Based on Graphene-hBN Heterostructure. Biosensors. 2021; 11(6):201. https://doi.org/10.3390/bios11060201

Chicago/Turabian Style

Liu, Zihao, Fangyuan Lu, Leyong Jiang, Wei Lin, and Zhiwei Zheng. 2021. "Tunable Goos-Hänchen Shift Surface Plasmon Resonance Sensor Based on Graphene-hBN Heterostructure" Biosensors 11, no. 6: 201. https://doi.org/10.3390/bios11060201

APA Style

Liu, Z., Lu, F., Jiang, L., Lin, W., & Zheng, Z. (2021). Tunable Goos-Hänchen Shift Surface Plasmon Resonance Sensor Based on Graphene-hBN Heterostructure. Biosensors, 11(6), 201. https://doi.org/10.3390/bios11060201

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