Adaptable metasurface for dynamic anomalous reflection
Adaptable metasurface for dynamic anomalous reflection
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DOI：
10.1063/1.4983782
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发表时间：
2017-05
影响因子：
4
通讯作者：
Libin Yan;W. Zhu;P. Wu;H. Cai;Y. Gu;L. K. Chin;Z. Shen;P. Chong;Zhenchuan Yang;W. Ser
中科院分区：
文献类型：
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作者：
Libin Yan;W. Zhu;P. Wu;H. Cai;Y. Gu;L. K. Chin;Z. Shen;P. Chong;Zhenchuan Yang;W. Ser
在本文中，我们展示了一个自适应超颖表面与液体金属环形谐振器的周期性阵列。它的光学特性可以通过单独重新配置谐振器的几何形状（形状和取向）来动态控制。为了验证概念，通过调整散射电磁波的相位分布，演示了动态异常反射，其中反射角对于10.5、12和14 GHz三种不同的垂直入射频率固定在−45°。所展示的自适应超颖表面为多频跟踪雷达系统和宽带扫描系统中的有前途的应用铺平了道路。
In this paper, we demonstrate an adaptable metasurface with a periodic array of liquid-metal ring-shaped resonators. Its optical properties can be dynamically controlled by individually reconfiguring the geometry (shape and orientation) of the resonators. For the proof of concept, by tailoring the phase profile of the scattered electromagnetic wave, a dynamic anomalous reflection is demonstrated, whereby the reflection angle is fixed at −45° for three different normal incident frequencies of 10.5, 12, and 14 GHz. The demonstrated adaptable metasurfaces pave a way for promising applications in multi-frequency tracking radar systems and broadband scanning systems.