"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

High-Q metasurface biosensor based on low-refractive-index materials

GEFEI ZHAO1,2, XIAOLI ZHANG33, YINGXIAN WANG3, JIESHUANG QI4, YING TIAN4, XIAOMEI ZHANG5, ZHIBO YIN6,* , YONGXING JIN4,*

Affiliation

  1. Institute of Medical Technology, Peking University Health Science Center, Beijing, 100191, China
  2. Biomedical Engineering Department, Institute of Advanced Clinical Medicine, Peking University, Beijing, 100191, China
  3. Special Equipment Institute, Hangzhou Polytechnic University, Hangzhou 310018, People’s Republic of China
  4. Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China
  5. Hangzhou QiuShi New Materials Technology Co., Ltd., Hangzhou, China
  6. School of artifical intelligence, Zhejiang Polytechnic University of Mechanical and Electrical Engineering, Hangzhou, Zhejiang, 310051, China

Abstract

This study presents a metasurface biosensor constructed from low-refractive-index materials that successfully achieves high-Q unit structures through the synergistic optimization of material selection and geometric parameter design. Simulation verification was conducted using photopolymer resin and aluminum oxide as comparative materials. The results indicate that photopolymer resin, due to its low refractive index, significantly reduces light scattering loss and demonstrates exceptional overall performance in theoretical simulations, achieving a Q-factor of 737.6 and a refractive index sensing sensitivity of 51.31 GHz/RIU. More importantly, the photopolymer-based metasurface retains high Q-factor characteristics while exhibiting enhanced biomolecular adsorption capabilities. This research offers an innovative solution for developing high-performance and cost-effective biosensing platforms..

Keywords

Metasurface, Biosensor, Terahertz.

Submitted at: Oct. 13, 2025
Accepted at: June 2, 2025

Citation

GEFEI ZHAO, XIAOLI ZHANG3, YINGXIAN WANG, JIESHUANG QI, YING TIAN, XIAOMEI ZHANG, ZHIBO YIN, YONGXING JIN, High-Q metasurface biosensor based on low-refractive-index materials, Journal of Optoelectronics and Advanced Materials Vol. 28, Iss. 5-6, pp. 201-215 (2026)