Marini A, Ramaccia D, Toscano A, Bilotti F
Opt Lett. 2020 Jun 1;45(11):3147-3150. doi: 10.1364/OL.389389.
We investigate an anomalous scattering phenomenon exhibited by a lossless system based on metasurfaces. Electromagnetic energy is neither reflected nor transmitted but stored within the system to be available again at a different time. We analytically derive the proper excitation conditions and verify the response of the system through a proper set of full-wave simulations, demonstrating the key role of the metasurface in enabling such a zero-scattering condition. The practical feasibility and the opportunities offered by the proposed metasurface-based system may open the door to the design of virtual absorbers with dynamic properties in energy absorbing, storing, and releasing.
我们研究了一种基于超表面的无损系统所表现出的反常散射现象。电磁能量既不被反射也不被传输，而是存储在系统中，以便在不同时间再次可用。我们通过解析推导出了适当的激发条件，并通过一组适当的全波模拟验证了系统的响应，证明了超表面在实现这种零散射条件中的关键作用。所提出的基于超表面的系统的实际可行性和所提供的机遇可能为设计具有能量吸收、存储和释放动态特性的虚拟吸收器打开大门。
