Near-field Thermal Radiation in Heterostructure of Graphene-Hexagonal Boron Nitride

In recent years, a lot of theoretical and experimental studies have been carried out as the mechanism of near field radiative heat transfer is found out, which is different from the traditional heat transfer mechanism. In particular, with the manufacture of new materials such as graphene and various metamaterials, the near-field thermal radiation can be controlled. In this paper, we investigate the effect of coupling between plasmon-polaritons in graphene and phonon-polaritons in hexagonal boron nitride through covering a sheet of graphene on semi-infinite hexagonal boron nitride. The results show that the covering of graphene will enhance the near-field thermal radiation between two bulks of hexagonal boron nitride.