Symmetric Brownian motor

TL;DR

This paper introduces a symmetric Brownian motor model that reverses its velocity with temperature gradient inversion, analyzing its efficiency and current behavior through analytical and numerical methods.

Contribution

It presents a novel symmetric Brownian motor model exhibiting velocity reversal and analyzes its properties using both analytical and numerical approaches.

Findings

Motor velocity reverses with temperature gradient inversion

Current direction changes with phase shift variation

Analytical predictions match numerical simulations

Abstract

In this paper we present a model of a symmetric Brownian motor (SBM) which changes the sign of its velocity when the temperature gradient is inverted. The velocity, external work and efficiency are studied as a function of the temperatures of the baths and other relevant parameters. The motor shows a current reversal when another parameter (a phase shift) is varied. Analytical predictions and results from numerical simulations are performed and agree very well. Generic properties of this type of motors are discussed.