Enhancement of the longitudinal transport by a weakly transversal drive

TL;DR

This paper demonstrates that applying a weak transversal drive to Brownian particles in an asymmetric tube significantly enhances longitudinal transport and enables multiple current reversals through frequency modulation, offering flexible control.

Contribution

It introduces a novel method of controlling particle transport using a polarized field with weak transversal drive in a two-dimensional asymmetric tube.

Findings

Longitudinal current is significantly enhanced by a weak transversal drive.

Multiple current reversals are achievable by changing the driving frequency.

Coupling longitudinal and transversal forces allows flexible transport control.

Abstract

Transport of Brownian particles in a two-dimensional asymmetric tube is investigated by applying a polarized field. From the Brownian dynamics simulations we find that the longitudinal current can be enhanced remarkably by applying a weakly transversal drive. Multiple current reversals can be realized by altering the driving frequency of the polarized field. By coupling the longitudinal and transversal forces together, one can control the particle transport flexibly.