基于柔性衬底全介质超表面的异常透射开关研究

doi:10.3969/j.issn.1007-5461.2026.01.013

量子电子学报 ›› 2026, Vol. 43 ›› Issue (1): 151-160.doi: 10.3969/j.issn.1007-5461.2026.01.013

• 微纳光学 • 上一篇

基于柔性衬底全介质超表面的异常透射开关研究

王玉林 1, 杨震 2, 徐艳丽 1*, 赵洪 1

1 贵州民族大学物理与机电工程学院, 贵州贵阳 550025;2 贵州省气象局贵州省气象数据中心, 贵州贵阳 550025

收稿日期:2025-09-28 修回日期:2025-12-08 出版日期:2026-01-28 发布日期:2026-01-28
通讯作者: E-mail: yanlixu@gzmu.edu.cn E-mail:E-mail: yanlixu@gzmu.edu.cn
作者简介:王玉林 ( 1999- ), 贵州都匀人, 研究生, 主要从事微纳光学方面的研究。E-mail: 486494991@qq.com
基金资助:
国家自然科学基金 (62364004), 贵州民族大学博士科研启动基金 (GZMUZK[2024]QD70)

Study on anomalous transmission switching of all⁃dielectric metasurfaces based on flexible substrates

WANG Yulin 1 , YANG Zhen 2 , XU Yanli 1*, ZHAO Hong 1

1 School of Physics and Mechatronic Engineering, Guizhou Minzu University, Guiyang 550025, China; 2 Guizhou Provincial Meteorological Data Center, Meteorological Bureau of Guizhou Province, Guiyang 550025, China

Received:2025-09-28 Revised:2025-12-08 Published:2026-01-28 Online:2026-01-28

摘要/Abstract

摘要： 本文提出了一种基于柔性衬底聚二甲基硅氧烷的TiO2全介质超表面, 通过几何参数优化实现了可见光波段的高效异常透射调控。研究分析了超表面在405 nm波长下的电磁响应特性, 通过调节纳米柱边长, 实现了接近2π的相位覆盖和超过85%的平均透射率(峰值达99%)。理论计算与仿真结果表明, 该结构在正入射条件下可产生稳定的异常透射角(9.6º), 且其相位梯度与广义斯涅耳定律计算结果高度吻合。进一步研究表明, 通过施加机械应变可动态调控超表面的透射特性, 实现“ON”态(异常透射)与“OFF”态(异常透射失效)的可逆切换。此外, 基于TiO2超表面异常透射特性设计的复合梯度超表面(上层递增/下层递减结构)展现出独特的电场分布调控能力, 为电磁透明材料、雷达罩等应用提供了兼具宽谱响应与高效透射的新方案, 本研究也为柔性可调谐光子器件的设计提供了实验参考和理论依据。

关键词: 物理光学, 异常透射, 相位梯度, 全介质超表面

Abstract: This study presents an all-dielectric TiO2 metasurface fabricated on a flexible polydimethylsiloxane substrate. And through geometric parameter optimization, the metasurface can achieve efficient anomalous transmission control within the visible spectrum. The electromagnetic response of the metasurface is analyzed at a wavelength of 405 nm, and a nearly complete phase coverage and an average transmittance exceeding 85% (with a peak of 99%) are achieved by adjusting the side length of the nanopillars. Theoretical calculations and simulation results show that this structure can generate a stable anomalous transmission angle (9.6º) under normal incidence condition, and its phase gradient is highly consistent with the generalized Snell's law. Further research indicates that mechanical strain can be applied to dynamically tune the transmission characteristics, enabling reversible switching between "ON" (anomalous transmission) and "OFF" (anomalous transmission disabled) states. Additionally, the designed composite gradient metasurface (featuring upper layers with increasing gradients and lower layers with decreasing gradients) based on the anomalous transmission characteristics of TiO2 metasurface exhibits unique capabilities for electric field distribution manipulation, offering a new approach combining broadband response and high transmission efficiency for applications like electromagnetic transparency and radomes. This research provides a theoretical basis and experimental reference for the design of flexible, tunable photonic devices.

Key words: physical optics, anomalous transmission, phase gradient, all-dielectric metasurface

中图分类号:

O431.2

王玉林, 杨震, 徐艳丽, 赵洪 . 基于柔性衬底全介质超表面的异常透射开关研究[J]. 量子电子学报, 2026, 43(1): 151-160.

WANG Yulin , YANG Zhen , XU Yanli , ZHAO Hong . Study on anomalous transmission switching of all⁃dielectric metasurfaces based on flexible substrates[J]. Chinese Journal of Quantum Electronics, 2026, 43(1): 151-160.

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基于柔性衬底全介质超表面的异常透射开关研究

Study on anomalous transmission switching of all⁃dielectric metasurfaces based on flexible substrates

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