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Adiabatic Thermal Radiation Pumps for Thermal Photonics

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posted on 2023-11-30, 18:31 authored by Huanan Li, Lucas J. Fernández-Alcázar, Fred Ellis, Boris Shapiro, Tsampikos Kottos
We control the direction and magnitude of thermal radiation, between two bodies at equal temperature (in thermal equilibrium), by invoking the concept of adiabatic pumping. Specifically, within a resonant near-field electromagnetic heat transfer framework, we utilize an {\it instantaneous} scattering matrix approach to unveil the critical role of wave interference in radiative heat transfer. We find that appropriately designed adiabatic pumping cycling near diabolic singularities can dramatically enhance the efficiency of the directional energy transfer. We confirm our results using a realistic electronic circuit set-up.

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