Ref HAL: hal-01562609_v1
Ref Arxiv: 1702.02057
DOI: 10.1364/OE.25.014746
WoS: WOS:000404189800077
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
12 Citations
Résumé:

Radiative heat transfer between uniform plates is bounded by the narrow range and limited contribution of surface waves. Using a combination of analytical calculations and numerical gradient-based optimization, we show that such a limitation can be overcome in complicated multilayer geometries, allowing the scattering and coupling rates of slab resonances to be altered over a broad range of evanescent wavevectors. We conclude that while the radiative flux between two inhomogeneous slabs can only be weakly enhanced, the flux between a dipolar particle and an inhomogeneous slab—proportional to the local density of states—can be orders of magnitude larger, albeit at the expense of increased frequency selectivity. A brief discussion of hyperbolic metamaterials shows that they provide far less enhancement than optimized inho- mogeneous slabs.