High-sensitivity Goos–Hänchen shift gas sensor based on subwavelength hyperbolic metamaterials

Ji Ma, Manli Wei, Di Wu, Sitong Liu, Runhua Li and Lulu Sun
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Ji Ma: Liaoning Provincial Key Laboratory of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Manli Wei: Liaoning Provincial Key Laboratory of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Di Wu: Liaoning Provincial Key Laboratory of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Sitong Liu: Liaoning Provincial Key Laboratory of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Runhua Li: Liaoning Provincial Key Laboratory of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Lulu Sun: ��College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China

International Journal of Modern Physics C (IJMPC), 2023, vol. 34, issue 09, 1-9

Abstract: Optical gas sensors play an increasingly important role in many applications, particularly for the detection of toxic gases. A novel Goos–Hänchen (GH) shift optical gas sensing scheme based on subwavelength hyperbolic metamaterials (HMMs) is proposed. The GH shift intensity, direction and the critical wavelength characteristics were revealed. By virtue of the GH shift and subwavelength HMMs characteristics, we designed an ultra-sensitive gas sensor to detect helium (He), hydrogen (H2), carbon monoxide (CO) and methane (CH4). The study shows that the sensitivities of the gas sensor can reach as high as SHe=3.06×106μm/RIU, SH2=2.86×106μm/RIU, SCO=1.81×106μm/RIU, and SCH4=9.58×105μm/RIU. With proper surface chemical modification, this GH shift gas sensor would be a powerful tool for high-sensitive gas sensing applications.

Keywords: Goos–Hänchen shift; hyperbolic metamaterial; gas sensor (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1142/S0129183123501127

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