Wang Xi, He Shukun, Wang Weihao, Duan Xuechao, Shi Hongyu
Opt Express. 2025 Jun 16;33(12):26846-26856. doi: 10.1364/OE.566397.
The beam deflection metasurface holds great potential in wireless communication, imaging, electromagnetic stealth, and wave manipulation due to its lightweight design, high efficiency, and flexibility. This work designs quasi-1-bit basic units with a phase difference of 180° by using air grid and proposes a mechanically adjustable beam deflection metasurface to achieve efficient beam deflection and polarization conversion. The reconfigurable design enables dynamic beam deflection from 0° to 60° by horizontal translation of the basic structure. The experimental results align well with the simulations, confirming the metasurface's performance and versatility. This work not only can avoid the electromagnetic interference caused by wiring and reduce the possibility of unexpected electromagnetic cracking/attacking, but also offers a flexible and cost-effective solution for advanced electromagnetic beam control.
由于其轻量化设计、高效率和灵活性，波束偏转超表面在无线通信、成像、电磁隐身和波操纵方面具有巨大潜力。这项工作通过使用空气栅格设计了具有180°相位差的准1比特基本单元，并提出了一种机械可调波束偏转超表面，以实现高效的波束偏转和极化转换。通过基本结构的水平平移，可重构设计能够实现从0°到60°的动态波束偏转。实验结果与模拟结果吻合良好，证实了超表面的性能和通用性。这项工作不仅可以避免布线引起的电磁干扰，降低意外电磁开裂/攻击的可能性，还为先进的电磁波束控制提供了一种灵活且经济高效的解决方案。
