Active particles powered by Quincke rotation in a bulk fluid
Soft Condensed Matter
2019-06-05 v1 Fluid Dynamics
Abstract
Dielectric particles suspended in a weakly conducting fluid are known to spontaneously start rotating under the action of a sufficiently strong uniform DC electric field due to the Quincke rotation instability. This rotation can be converted into translation when the particles are placed near a surface providing useful model systems for active matter. Using a combination of numerical simulations and theoretical models, we demonstrate that it is possible to convert this spontaneous Quincke rotation into spontaneous translation in a plane perpendicular to the electric field in the absence of surfaces by relying on geometrical asymmetry instead.
Cite
@article{arxiv.1904.10855,
title = {Active particles powered by Quincke rotation in a bulk fluid},
author = {Debasish Das and Eric Lauga},
journal= {arXiv preprint arXiv:1904.10855},
year = {2019}
}