Radiative heat flux predictions in hyperbolic metamaterials
  The transport of heat mediated by thermal photons in hyperbolic multilayer metamaterials is studied using the fluctuational electrodynamics theory. We demonstrate that in comparison to bulk materials the flux inside layered hyperbolic materials can be transported at much longer distances, making these media very promising for thermal management and for near-field energy harvesting. 
Maria Tschikin, Svend-Age Biehs, Philippe Ben-Abdallah, Slawa Lang,   Alexander Petrov, Manfred Eich
cond-mat.mes-hall