Quincke oscillations of colloids at planar electrodes
Soft Condensed Matter
2021-06-30 v1
Abstract
Dielectric particles in weakly conducting fluids rotate spontaneously when subject to strong electric fields. Such Quincke rotation near a plane electrode leads to particle translation that enables physical models of active matter. Here, we show that Quincke rollers can also exhibit oscillatory dynamics, whereby particles move back and forth about a fixed location. We explain how oscillations arise for micron-scale particles commensurate with the thickness of a field-induced boundary layer in the nonpolar electrolyte. This work enables the design of colloidal oscillators.
Cite
@article{arxiv.2102.05237,
title = {Quincke oscillations of colloids at planar electrodes},
author = {Zhengyan Zhang and Hang Yuan and Yong Dou and Monica Olvera de la Cruz and Kyle J. M. Bishop},
journal= {arXiv preprint arXiv:2102.05237},
year = {2021}
}