Figure 2
From: Polarization tunable all-dielectric color filters based on cross-shaped Si nanoantennas
(a) Metasurface composed of nonsymmetric Si nanoantennas placed on top of quartz substrate; inset schematically shows wave propagation in case of x-polarized (Φ = 0°) and y-polarized (Φ = 90°) normally incident wave. (b) Top view of SEM image of fabricated device. (c) A schematic representation of the color filter operating in transmission and reflection modes.
