Figure 1
From: Control of the near-field radiative heat transfer between graphene-coated nanoparticle metasurfaces
The sketch of the system consists of two metasurfaces, each composed of a monolayer of graphene-coated nanoparticles of radius R arranged in a 2D square lattice with lattice parameter p and supported on a semi-infinite glass substrate with permittivity, \(\varepsilon _S=1.46\). In one case, the nanoparticle cores are composed of a Drude-type material with a plasma frequency in the mid-infrared, and in another case, the cores are made of the polar dielectric SiC. For simplicity, we assume that the nanoparticle arrays are immersed in the vacuum matrix, \(\varepsilon _M=1.0\). The metasurfaces are at different temperatures \(T_1=320\) K and \(T_2=280\) K and separated by a vacuum gap \(L=50\) nm.
