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不功能的太赫兹元表面具有可切换的极化转换和VO2和光敏感的吸收

Guan Wang¹, Shiyi Zuo¹, Jia Liu¹

¹Electronic Engineering College, Heilongjiang University, Harbin, 150080, China. gaoyachen@hlju.edu.cn.

Physical chemistry chemical physics : PCCP

|July 13, 2023

概括

这项研究引入了一个可切换的太赫兹 (THz) 超表面,用于极化转换和吸收. 它可以动态控制THz波,从而实现先进的成像应用.

科学领域:

在Metasurfaces上使用.
特拉赫兹 (THz) 技术的使用.
光电学是指光电子产品.

背景情况:

超表面具有独特的电磁性质.
控制太赫兹波对于先进的应用来说至关重要.
多功能设备在THz研究中非常受欢迎.

研究的目的:

为太赫兹 (THz) 应用提出一个可切换的多功能元表面.
为了实现极化转换和吸收功能.
为了证明动态控制和成像能力.

主要方法:

使用二氧化瓦纳 (VO2) 和光敏感 (PS) 构成的超表面的制造.
在不同条件下传输和吸收特性的表征.
使用光和极化角度调节导电率.

主要成果:

实现了宽带偏振转换 (>90% PCR) 在介电状态下具有>80%的传导率.
证明了双向THz吸收 (>95%吸收率) 在金属状态下,对冲击角度不敏感.
启用了吸收的动态调整,并证明了对线性偏振波的多重成像.

结论:

拟议的超表面为THz波提供可切换的多功能功能.
实现了对偏振转换和吸收的动态控制.
该设备显示了THz成像和其他应用的巨大潜力.

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