Equivalent circuit theory of radiative heat transfer on micro- and   nanoscale
  Here, we outline a theory of radiative heat transfer based on an equivalent electrical network representation for the hot material slabs in an arbitrary multilayered environment with arbitrary distribution of temperatures and electromagnetic properties among the layers. Our approach is fully equivalent to the known theories operating with the fluctuating current density, while being significantly simpler in analysis and applications. 
Stanislav I. Maslovski, Constantin R. Simovski, Sergei A. Tretyakov
physics.optics cond-mat.mes-hall