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Solution of near-field thermal radiation in one-dimensional layered media using dyadic Green's functions and the scattering matrix method

2009; Elsevier BV; Volume: 110; Issue: 18 Linguagem: Inglês

10.1016/j.jqsrt.2009.05.010

1879-1352

Mathieu Francoeur, M. Pınar Mengüç, Rodolphe Vaillon,

Quantum Electrodynamics and Casimir Effect

A general algorithm is introduced for the analysis of near-field radiative heat transfer in one-dimensional multi-layered structures. The method is based on the solution of dyadic Green's functions, where the amplitude of the fields in each layer is calculated via a scattering matrix approach. Several tests are presented where cubic boron nitride is used in the simulations. It is shown that a film emitter thicker than 1 μm provides the same spectral distribution of near-field radiative flux as obtained from a bulk emitter. Further simulations have pointed out that the presence of a body in close proximity to an emitter can alter the near-field spectrum emitted. This algorithm can be employed to study thermal one-dimensional layered media and photonic crystals in the near-field in order to design radiators optimizing the performances of nanoscale-gap thermophotovoltaic power generators.