An oxide thermal rectifier

TL;DR

This paper reports the experimental demonstration of a bulk oxide thermal rectifier made of cobalt oxides, showing a rectification coefficient of 1.43, aligning well with theoretical predictions.

Contribution

It presents the first experimental realization of a bulk oxide thermal rectifier based on a theoretical design, demonstrating significant rectification.

Findings

Rectification coefficient of 1.43 achieved

Good agreement between experiment and numerical calculation

First experimental demonstration of oxide thermal rectifier

Abstract

We have experimentally demonstrated thermal rectification as bulk effect. According to a theoretical design of a thermal rectifier, we have prepared an oxide thermal rectifier made of two cobalt oxides with different thermal conductivities, and have made an experimental system to detect the thermal rectification. The rectifying coefficient of the device is found to be 1.43, which is in good agreement with the numerical calculation.