Anomalous Thermomechanical Properties of a Self-propelled Colloidal Fluid
Soft Condensed Matter
2014-05-12 v4 Mesoscale and Nanoscale Physics
Materials Science
Chemical Physics
Abstract
We use numerical simulations to compute the equation of state of a suspension of spherical, self-propelled nanoparticles. We study in detail the effect of excluded volume interactions and confinement as a function of the system temperature, concentration and strength of the propulsion. We find a striking non-monotonic dependence of the pressure with the temperature, and provide simple scaling arguments to predict and explain the occurrence of such an anomalous behavior. We conclude the paper by explicitly showing how our results have an important implications for the effective forces exerted by fluids of self-propelled particles on passive, larger components.
Keywords
Cite
@article{arxiv.1310.0826,
title = {Anomalous Thermomechanical Properties of a Self-propelled Colloidal Fluid},
author = {S. A. Mallory and A. Šarić and C. Valeriani and A. Cacciuto},
journal= {arXiv preprint arXiv:1310.0826},
year = {2014}
}