Dong Bowen, Zhu Shuangqi, Guo Guanxuan, Wu Tong, Lu Xueguang, Huang Wanxia, Ma Hua, Xu Quan, Han Jiaguang, Zhang Shuang, Wang Yongtian, Zhang Xueqian, Huang Lingling
School of Optics and Photonics, Beijing Engineering Research Center of Mixed Reality and Advanced Display, Beijing Institute of Technology, Beijing, 100081, China.
National Innovation Institute of Defense Technology, Academy of Military Sciences, Beijing, 100071, China.
Adv Mater. 2025 Feb;37(6):e2417183. doi: 10.1002/adma.202417183. Epub 2024 Dec 15.
The Pancharatnam-Berry (PB) phase has revolutionized the design of metasurfaces, offering a straightforward and robust method for controlling wavefronts of electromagnetic waves. However, traditional metasurfaces have fixed PB phases determined by the orientation of their individual elements. In this study, an innovative structural design and integration scheme is proposed that utilizes vanadium dioxide, a phase-change material, to achieve thermally controlled dynamic PB phase control within the metasurface. By leveraging the material's properties, this can dynamically alter the optical orientation of individual elements of the metasurface and achieve temperature-dependent local phase modulation based on the geometric phase principle. This approach, combined with advanced fabrication processing technology, paves the way for next-generation dynamic devices with customizable functions.
庞加莱-贝里（PB）相位彻底改变了超表面的设计，为控制电磁波的波前提供了一种直接且稳健的方法。然而，传统超表面具有由其各个元件的取向决定的固定PB相位。在本研究中，提出了一种创新的结构设计和集成方案，该方案利用相变材料二氧化钒在超表面内实现热控动态PB相位控制。通过利用该材料的特性，可以动态改变超表面各个元件的光学取向，并基于几何相位原理实现与温度相关的局部相位调制。这种方法与先进的制造加工技术相结合，为具有可定制功能的下一代动态器件铺平了道路。
