Optical axis-driven modulation of near-field radiative heat transfer between two calcite parallel structures

Abstract

Recently, the increasing research on the anisotropic optical axis (OA) has provided a novel way to control light. However, this method is rarely applied to modulate the near-field radiative heat...

Performance improvement of three-body radiative diodes driven by graphene surface plasmon polaritons

“…Now let us consider the physics to simulate the radiative heat transfer in the proposed device. Based on the three-body theory, 32,33 the net radiative heat flow lost or received by body 3 can be can be expressed aswith the spectral radiative heat flux given by 33,63 In the expression listed above, n ij ( ω ) = n i ( ω ) − n j ( ω ) represents the difference between the two mean photon occupation numbers n i / j ( ω ) = (e ħω/k B T i / j − 1) −1 , with i , j = 1, 2, 3. ξ α − β j ( ω , κ ) denotes the energy transmission coefficients between bodies α and β at a parallel wave vector κ and angular frequency ω in the polarization state j ( j = s, p). The energy transmission coefficients for both propagating waves κ < ω / c and evanescent waves κ < ω / c between different bodies can be calculated 32,42 where D 1,23 and D 2,3 are the Fabry–Pérot-type matrices expressed as follows: 42 D 1,23 = 1 − ρ 1 ρ 23 exp[−2Im( k z ) d 12 ] D 2,3 = 1 − ρ 2 ρ 3 exp[−2Im( k z ) d 23 ]…”