Enhanced diffusion and ordering of self-propelled rods

Aparna Baskaran, M. Cristina Marchetti

Research output: Contribution to journalArticle

156 Scopus citations

Abstract

Starting from a minimal physical model of self-propelled hard rods on a substrate in two dimensions, we derive a modified Smoluchowski equation for the system. Self-propulsion enhances longitudinal diffusion and modifies the mean-field excluded volume interaction. From the Smoluchowski equation we obtain hydrodynamic equations for rod concentration, polarization and nematic order parameter. New results at large scales are a lowering of the density of the isotropic-nematic transition and a strong enhancement of boundary effects in confined self-propelled systems.

Original languageEnglish (US)
Article number268101
JournalPhysical Review Letters
Volume101
Issue number26
DOIs
StatePublished - Dec 22 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Enhanced diffusion and ordering of self-propelled rods'. Together they form a unique fingerprint.

Cite this