Figure 2
From: Tunable mid-infrared coherent perfect absorption in a graphene meta-surface
(a) Spectra of the reflection and transmission coefficients of a graphene nanoribbon meta-surface (w = 0.33 μm), the quasi-CPA points at the crosses of the scattering spectra are indicated with arrows. (b) Absolute values, real and imaginary parts of the effective surface conductivities of the corresponding graphene nanoribbon meta-surface.
