Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2012-04-02
Physics
Condensed Matter
Soft Condensed Matter
14 pages, 8 figures
Scientific paper
Dense suspensions of self-propelled rod-like particles exhibit a fascinating variety of non-equilibrium phenomena. By means of computer simulations of a minimal model for rigid self-propelled colloidal rods with variable shape we explore the generic diagram of emerging states over a large range of rod densities and aspect ratios. The dynamics is studied using a simple numerical scheme for the overdamped noiseless frictional dynamics of a many-body system in which steric forces are dominant over hydrodynamic ones. The different emergent states are identified by various characteristic correlation functions and suitable order parameter fields. At low density and aspect ratio, a disordered phase with no coherent motion precedes a highly-cooperative swarming state at large aspect ratio. Conversely, at high densities weakly anisometric particles show a distinct jamming transition whereas slender particles form dynamic laning patterns. In between there is a large window corresponding to strongly vortical, turbulent flow. The different dynamical states should be verifiable in systems of swimming bacteria and artificial rod-like micro-swimmers.
Löwen Hartmut
Wensink H. H.
No associations
LandOfFree
Emergent states in dense systems of active rods: from swarming to turbulence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Emergent states in dense systems of active rods: from swarming to turbulence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emergent states in dense systems of active rods: from swarming to turbulence will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-509508