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通过基于VO2的反射太赫兹元表面启用动态波面操纵

Ruifan Huang¹, Shangchu Shi¹, Mohan Sun¹

¹Department of Electronic Science and Technology, School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China.

Nanomaterials (Basel, Switzerland)

|March 13, 2026

概括

这项研究引入了一种新的动态反射太赫兹 (THz) 超表面,用于先进的波浪控制. 该设计允许多功能THz设备用于通信和成像应用.

科学领域:

特拉赫兹 (THz) 技术的使用.
超材料和纳米光子学
波工程波工程波工程

背景情况:

动态波面控制对于太赫兹 (THz) 应用,如非破坏性测试,无线通信和成像,至关重要.
目前的THz波浪控制方法面临的局限性包括复杂性,窄带宽和单一功能.

研究的目的:

开发一种多功能动态反射THz超表面,克服现有技术的局限性.
为了在THz频谱中实现高效和多功能波面控制.

主要方法:

提出了一个动态反射THz超表面,利用嵌套的二氧化 (VO2) 和的分裂环单元细胞.
通过在不同VO2状态下旋转内部/外部环,在1.07THz时实现独立的2π相覆盖.
证明了高的极化转换效率 (PCR > 0.98).

主要成果:

构建了三个反射超表面,展示了带宽聚焦束与可调节的焦距.
产生的宽带波束具有可变的拓电荷.
创建了一个可切换的光束,能够根据VO2状态在聚焦和旋转模式之间进行过渡.

结论:

拟议的嵌套分环超表面为紧的多功能THz设备提供了灵活性.
这种设计显示了集成THz系统,高容量通信和高分辨率成像的巨大潜力.

关键词:

THz 的地表变化.在VO2中,VO2是2次.动态控制的动态控制聚焦的光束聚焦的光束旋束束束束的束束.波浪前面波浪前面波浪前面

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