Fig. 2
Normal-incidence absorption spectra of monolayer graphene (red circle), Ag (green triangle), and total metamaterials (black square) in the wavelength range from 450 to 800 nm. Geometrical and physical parameters: p x = p y = 400 nm, d 1 = 140 nm, d 2 = 110 nm, d 3 = 80 nm, d 4 = 50 nm, h = 50 nm, t = 30 nm, E f = 0.50 eV, τ = 0.50 ps, T = 300 K, t g = 0.35 nm