Two-Dimensional Optical Metasurfaces: From Plasmons to Dielectrics

Figure 10

(a) The metasurface consists of an elliptic amorphous silicon column with the same height, different diameters (Dx and Dy), and different azimuthal angles (θ). The columns are located in the center of the hexagonal cell (pixel). (b) Rectangular dielectric nanoparticles also exhibit electromagnetic field polarizability. The figure shows the electric dipole (ED) and the magnetic dipole (MD) [20].

(a)

(b)