Figure 1

Schematic of the Huygens-Fresnel principle for deflections under a normal incidence with (a) a conventional interface (between two homogeneous media); (b) a metasurface interface.

Schematic of the Huygens-Fresnel principle for deflections under a normal incidence with (a) a conventional interface (between two homogeneous media); (b) a metasurface interface.