Distinguishing Advective and Powered Motion in Self-Propelled Colloids
Abstract
Self-powered motion in catalytic colloidal particles provides a compelling example of active matter, i.e. systems that engage in single-particle and collective behavior far from equilibrium. The long-time, long-distance behavior of such systems is of particular interest, since it connects their individual micro-scale behavior to macro-scale phenomena. In such analyses, it is important to distinguish motion due to subtle advective effects -- which also has long time scales and length scales -- from phenomena that derive from intrinsically powered motion. Here, we develop a methodology to analyze the statistical properties of the translational and rotational motions of powered colloids to distinguish, for example, active chemotaxis from passive advection by bulk flow.
Keywords
Cite
@article{arxiv.1704.07533,
title = {Distinguishing Advective and Powered Motion in Self-Propelled Colloids},
author = {Young-Moo Byun and Paul E. Lammert and Yiying Hong and Ayusman Sen and Vincent H. Crespi},
journal= {arXiv preprint arXiv:1704.07533},
year = {2017}
}