Brownian refrigerator

TL;DR

This paper demonstrates that a Brownian motor can function as a refrigerator driven by a temperature gradient, supported by analytical calculations and molecular dynamics simulations.

Contribution

It provides an exact analytical model showing the refrigerator function of a Brownian motor and validates it with simulations.

Findings

Analytical calculation of heat flux in a Brownian refrigerator

Validation of the model with molecular dynamics simulations

Confirmation of Onsager symmetry implications

Abstract

Onsager symmetry implies that a Brownian motor, driven by a temperature gradient, will also perform a refrigerator function upon loading. We analytically calculate the corresponding heat flux for an exactly solvable microscopic model and compare it with molecular dynamics simulations.