Asymmetry in shape causing absolute negative mobility

TL;DR

This paper introduces a simplified nanodevice design that achieves absolute negative mobility by embedding asymmetry in particle geometry, potentially enabling practical applications with easier engineering.

Contribution

It demonstrates that minimal asymmetry in particle shape, rather than channel design, can induce ANM, simplifying device fabrication and paving the way for practical implementations.

Findings

ANM can be achieved through particle shape asymmetry

Device performance is validated numerically and analytically

Design simplification facilitates practical nanodevice development

Abstract

We propose a simple classical concept of nanodevices working in an absolute negative mobility (ANM) regime: The minimal spatial asymmetry required for ANM to occur is embedded in the geometry of the transported particle, rather than in the channel design. This allows for a tremendous simplification of device engineering, thus paving the way towards practical implementations of ANM. Operating conditions and performance of our model device are investigated, both numerically and analytically.