用于二氧化钒太赫兹生物检测的五峰可调谐超表面设计

Yan Tingting, Guo Tiantian, Yang Jin

College of Electronic Information, Hunan First Normal University, ChangSha, 410205, China.

Key Laboratory of Hunan Province for 3D Scene Visualization and Intelligence Education, Hunan First Normal University, ChangSha, 410205, China.

Sci Rep. 2025 Mar 22;15(1):9877. doi: 10.1038/s41598-025-94722-7.

This paper introduces the design of a five-peak tunnable metasurface unit cell. The unit adopts a three-layer multi-resonant structure to construct five absorption frequencies, and the absorptive and reflective states are controlled by the phase change material vanadium dioxide. The author explains the working principle of the five absorption frequencies generated by the unit cell based on the electrical field diagram of the unit cell. The structure is symmetrical, therefore polarization is insensitive. The scattering pattern of the 10 × 10 array constructed by the unit cell between two states is compared in this paper. This design is expected to be applied in terahertz multi-frequency biological sample detection.

本文介绍了一种五峰可调谐超表面单元结构的设计。该单元采用三层多谐振结构来构建五个吸收频率，其吸收和反射状态由相变材料二氧化钒控制。作者基于单元结构的电场图解释了该单元结构产生五个吸收频率的工作原理。该结构是对称的，因此对偏振不敏感。本文比较了由该单元结构构建的10×10阵列在两种状态之间的散射模式。该设计有望应用于太赫兹多频生物样本检测。