Figure 11
From: Broadband absorption using all-graphene grating-coupled nanoparticles on a reflector
Wideband absorption for different sets of chemical potentials. The graphene-coated spheres are hollow and the relative permittivity of the substrate is 2. The geometrical parameters are W = 220 nm, G = 20 nm, R = 100 nm, d = 100 nm, and h = 1900 nm.
