Far-Field Radiative Thermal Rectification Based on Asymmetric Emissivity.

ABSTRACT: This experimental study investigates thermal rectification via asymmetric far-field thermal radiation on a fused silica slab. An asymmetrical distribution of surface emissivity is created over the device by partially covering the fused silica with a 100 nm thick aluminum film. The slab is subjected to a thermal bias, and when this bias is reversed, a small temperature difference is observed between the different configurations. This temperature difference arises from the difference in emissivity between the aluminum layer and fused silica, resulting in the transfer of thermal energy to the surrounding environment through radiation. Experimental findings are supported by finite element simulations, which not only confirm the measured values but also provide valuable insights into the rectif

SUBMITTER: Ng RC 

PROVIDER: S-EPMC11217939 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature