Super-Planckian Far-Field Radiative Heat Transfer

TL;DR

This paper theoretically demonstrates that far-field radiative heat transfer between micro-sized objects can significantly surpass the classical Planckian limit, revealing limitations of traditional theory at small scales.

Contribution

It introduces a theoretical framework showing super-Planckian heat transfer in the far-field for micron-sized structures, challenging classical predictions.

Findings

Far-field heat transfer exceeds Planckian limit by orders of magnitude.

Micron-sized structures can be used to experimentally observe this phenomenon.

Classical theory fails to predict heat transfer at micro- and nano-scales.

Abstract

We present a theoretical analysis that demonstrates that the far-field radiative heat transfer between objects with dimensions smaller than the thermal wavelength can overcome the Planckian limit by orders of magnitude. We illustrate this phenomenon with micron-sized structures that can be readily fabricated and tested with existing technology. Our work shows the dramatic failure of the classical theory to predict the far-field radiative heat transfer between micro- and nano-devices.