Reflectionless Wide-Angle Refracting Metasurfaces

By J. Wong, A. Epstein, George V. Eleftheriades. IEEE Antennas and Wireless Propagation Letters, 2016

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Perfect control of reflection and refraction using spatially dispersive metasurfaces (2016, methodology): “Multilayered topologies were proposed in paper [18].”
Acoustic metasurfaces for scattering-free anomalous reflection and refraction (2017, background): “However, as has been recently demonstrated for the electromagnetic scenario [14,15,19], by ensuring perfect matching in the microscopic design of the metasurface (individual design of each meta-atom) we cannot obtain the proper macroscopic behavior of the metasurface.”
Roadmap on metasurfaces (2019, unknown): “To demonstrate the capability of these Huygens’ metasurfaces (HMS), figures 4(c) and (d) show the case of reflectionless refraction of a normally incident plane wave at an extreme angle [35, 36].”
Perfect Anomalous Reflection with a Bipartite Huygens’ Metasurface (2017, background): “implementable on three closely-spaced layers of reactive elements [27].”
Transmissive Ultrathin Pancharatnam-Berry Metasurfaces with nearly 100% Efficiency (2017, background): “In general, the metaatoms must exhibit more complex properties (such as bianisotropic response [31] or asymmetric structure [32]) in order to achieve high-efficiency large-angle anomalous refractions.”
Susceptibility Derivation and Experimental Demonstration of Refracting Metasurfaces Without Spurious Diffraction (2018, background): “1) monoisotropy with loss and gain [18]; 2) nonreciprocity [15]; 3) bianisotropy [19]–[21].”