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Near‐field radiative heat transfer (NFRHT) can exceed the blackbody radiation limit owing to the coupled evanescent waves, implying a significant potential for energy conversion and thermal management. Coupled surface plasmon polaritons (SPPs) and hyperbolic phonon polaritons (HPPs) with small ohmic losses enable a long propagation wavelength that is essential in NFRHT. However, so far, there still...
Radiative Heat Transfer
In article number 2108032, Jinlin Song, Zixue Luo, Qiang Cheng, and co‐workers measure the near‐field radiative heat transfer between graphene/hexagonal boron nitride systems, where the coupling of hyperbolic phonon polaritons and surface plasmon polaritons is examined. The largest ever radiative heat flux is achieved for a gap space of ≈400 nm, which is six times higher than...