Figure 2

Transmittance spectra of the bi-layered hybrid metasurfaces having various nanorods of (a) w = 30 nm, l = 80 nm, (b) w = 60 nm, l = 90 nm, (c) w = 100 nm, l = 120 nm and fixed θ = 45° as changing d. (d) The transmittance spectra of the various structures with w = 100 nm, l = 120 nm, and θ = 45°. For x-polarized incident light, the transmitted y-polarized light of the nanorod layer without the nanograting (black line) and the transmittance of the bi-layered structures with varying d (colour lines) are calculated. (e) The electric field distributions of various structures represented as R₁, R₂, and R₃. The R₁ and R₃ have the nanograting layer with d = 150 nm and 100 nm, respectively, and R₂ does not have the nanograting layer. (f) The area of the RGB colour space of the bi-layered structures with various d.