Bound States in the Continuum Enabled THz Dielectric Metasurface for High Sensitivity Refractive-Index Sensing

被引：0
|
作者：
Georgiades, Marie-Leonie [1 ]
Seddon, James [1 ]
Renaud, Cyril [1 ]
机构：
[1] UCL, Dept Elect & Elect Engn, London WC1E 7JE, England
来源：
2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ | 2023年
关键词：
D O I：
10.1109/IRMMW-THz57677.2023.10299183
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
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