Figure 3
Absorptance spectra at normal incidence calculated using full-wave simulations (gray) and homogenization approximation (orange). Also shown are the contributions to the absorptance due to the resonators (cyan) calculated using Eq. (1) and ground plane (red) based on Eq. (2) (see Methods). Inset (a) is a schematic of the multiple reflection process that takes place within the absorber and inset (b) shows the calculated effective conductivity of the sheet containing the resonator array.
