Hyperbolic waveguide for long-range heat transport (Orale)
Résumé
When two objects at two different temperatures are close enough, near-field effects due to tunneling of evanescent waves between them can lead to a radiative transfer beyond the Planck limit [1]. However at large separation distances (i.e. in the far-field regime) the transfer of energy which results exclusively from propagative photons cannot exceed this limit. In this presentation we show in the framework of fluctuational electrodynamics that using hyperbolic media [2,3] to connect a hot to a cold body we can in principle transport the near-field energy over distances much larger than the thermal wavelength and observe a surperPlanckian transfer at long separation distance