Design of high-Q and high-sensitivity terahertz metamaterial sensors for trace detection

Bing Dong; Dongshan Wei; Zhilin Ke; Jing Liu; Dongxiong Ling

doi:10.1117/12.3004104

24 November 2023 Design of high-Q and high-sensitivity terahertz metamaterial sensors for trace detection

Bing Dong, Dongshan Wei, Zhilin Ke, Jing Liu, Dongxiong Ling

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129350O (2023) https://doi.org/10.1117/12.3004104
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

In order to satisfy the sensing requirement for low-concentration or even trace detection using Terahertz (THz) spectroscopy, a new metamaterial sensor (MS) based on a double-opening elliptical ring array is designed by electromagnetic simulations. After optimization of the MS structure, the proposed MS has a strong resonant peak absorption peak around 2.853 THz and is entitled with high-Q and high-sensitivity simultaneously. The Q-value of the designed MS can reach to 385.0 and the sensitivity can reach to 371.5 GHz/RIU for a dielectric analyte with a thickness of 30 μm and it still can remain 40.0 GHz/RIU for a very thin analyte with a thickness of 1 μm. These results indicate that the designed MS has good sensing performance and can potentially be applied to high-sensitive detection of low-concentration or even trace samples.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Bing Dong, Dongshan Wei, Zhilin Ke, Jing Liu, and Dongxiong Ling "Design of high-Q and high-sensitivity terahertz metamaterial sensors for trace detection", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129350O (24 November 2023); https://doi.org/10.1117/12.3004104

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KEYWORDS

Terahertz radiation

Sensors

Refractive index

Sensor metamaterials

Terahertz metamaterials

Electromagnetic metamaterials

Design and modelling

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