학술논문
Bound States in the Continuum Enabled THz Dielectric Metasurface for High Sensitivity Refractive-Index Sensing
Document Type
Conference
Source
2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2023 48th International Conference on. :1-2 Sep, 2023
Subject
Language
ISSN
2162-2035
Abstract
In this work we present a highly sensitive all-dielectric terahertz (THz) metasurface sensor consisting of an array of hollow cuboids made of silicon on top of a quartz substrate. The proposed design exploits the phenomenon of bound states in the continuum (BIC) to achieve a Q-factor of 10260 which corresponds to a sensitivity of 18.8 GHz/ RIU. This sensor is to be integrated in a continuous wave (CW) spectroscopy setup for the detection of chemical and biological substances based on refractive index sensing. The performance of the sensor offers a promising approach towards label-free, cost-effective and room temperature operable sensing solutions.