Xu Yucheng, Liu Yichao, Fei Hongming, Chen Zhihui, Yang Yibiao, Tu Xuecou, Chen Jian, Sun Fei
Opt Express. 2020 Nov 9;28(23):35363-35375. doi: 10.1364/OE.408826.
Previous invisible gateways are mainly based on super-scattering effect, which can only work for the perfect electric conductor (PEC) wall, while no further exploration is conducted for the walls made of other materials (i.e., the actual wall is not PEC). In this study, we design an asymmetric universal invisible gateway by transformation optics, which is versatile for applying arbitrary materials as wall materials. In addition, its unique asymmetric structure leads to the difference of the detection results when the relative position of the detection source and the invisible gateway changes: one side can only see a complete wall (no gateway) and the other side can detect the gateway in the middle of the wall. This research advances a new step for the specific application of invisible gateway.
以往的隐形网关主要基于超散射效应，其仅适用于理想导体（PEC）壁，而对于由其他材料制成的壁（即实际壁不是PEC）未作进一步探索。在本研究中，我们通过变换光学设计了一种不对称通用隐形网关，其可灵活应用任意材料作为壁材料。此外，其独特的不对称结构导致当检测源与隐形网关的相对位置改变时检测结果存在差异：一侧只能看到完整的壁（无网关），而另一侧可以检测到壁中间的网关。本研究为隐形网关的具体应用向前迈进了新的一步。
