On Super-Planckian thermal emission in far field regime

Abstract

We study, in the framework of the Landauer theory, the thermal emission in far-field regime, of arbitrary indefinite planar media and finite size systems. We prove that the flux radiated by the former is bounded by the blackbody emission while, for the second, there is in principle, no upper limit demonstrating so the possibility for a super-Planckian thermal emission with finite size systems.

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• Near-field heat transfer between multilayer hyperbolic metamaterials
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• $\mathbb{T}$-operator bounds on angle-integrated absorption and thermal radiation for arbitrary objects
• Extreme Non-Reciprocal Near-Field Thermal Radiation via Floquet Photonics
• True thermal antenna with hyperbolic metamaterials
• Fluctuational electrodynamics for nonlinear materials in and out of thermal equilibrium
• Quantum nonlinear mixing of thermal photons to surpass the blackbody limit
• Radiative heat transfer between spatially nonlocally responding dielectric objects
• Super-Planckian radiative heat transfer between coplanar two-dimensional metals
• General trace formula for heat flux fluctuations
• Deep Reinforcement Learning for Radiative Heat Transfer Optimization Problems
• Non-Planck thermal emission from two-level media