Tan Xiaoxue, Chen Juan, Li Jianxing, Yan Sen
Opt Express. 2022 Feb 28;30(5):6991-6998. doi: 10.1364/OE.449865.
In this paper, a water-based metasurface with adjustable reflection amplitude is proposed. The overall structure uses a transparent substrate as a water-based container, and the upper surface is loaded with a double-ring-shaped resistive film. As the height of the water in the container gradually increases from 0 mm to 0.5 mm, within a broadband range from 0.1 GHz to 30 GHz, the maximum adjustable range of the reflection amplitude is -2 dB to -12 dB. The water-based metasurface switches from a state of strong reflection to a state of absorption. The test results are in good agreement with the simulation results. Because the tunable metasurface is transparent to visible light, it can be used for electromagnetic shielding of windows of airplanes.
本文提出了一种反射幅度可调的水基超表面。整体结构采用透明基板作为水基容器，上表面加载双环形电阻膜。当容器中的水高度从0毫米逐渐增加到0.5毫米时，在0.1吉赫兹至30吉赫兹的宽带范围内，反射幅度的最大可调范围为-2分贝至-12分贝。水基超表面从强反射状态切换到吸收状态。测试结果与模拟结果吻合良好。由于可调超表面对可见光透明，因此可用于飞机窗户的电磁屏蔽。
