Crystallization and flow in active patch systems
arXiv:1805.08934 · doi:10.1039/C6SM01898J
Abstract
Based upon recent experiments in which Janus particles are made into active swimmers by illuminating them with laser light, we explore the effect of applying a light pattern on the sample, thereby creating activity inducing zones or active patches. We simulate a system of interacting Brownian diffusers that become active swimmers when moving inside an active patch and analyze the structure and dynamics of the ensuing stationary state. We find that, in some respects, the effect of spatially inhomogeneous activity is qualitatively similar to a temperature gradient. For asymmetric patches, however, this analogy breaks down because the ensuing stationary state is specific to partial active motion.
arXiv commentVersion published in Soft Matter is significantly improved
References in corpus (28)
- Active Particles in Complex and Crowded Environments
- Self-motile colloidal particles: from directed propulsion to random walk
- The Mechanics and Statistics of Active Matter
- Motility-Induced Phase Separation
- Physics of Microswimmers - Single Particle Motion and Collective Behavior
- Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
- Active Brownian Particles. From Individual to Collective Stochastic Dynamics
- Sedimentation of active colloidal suspensions
- Pressure is not a state function for generic active fluids
- Diffusive transport without detailed balance in motile bacteria: Does microbiology need statistical physics?
- Phase behaviour of active Brownian particles: The role of dimensionality
- State-dependent diffusion: thermodynamic consistency and its path integral formulation
- Phase separation and rotor self-assembly in active particle suspensions
- A self-propelled particle in an external potential: is there an effective temperature?
- Microscopic theory for the phase separation of self-propelled repulsive disks
- Crystallization in a dense suspension of self-propelled particles
- Rectification of Swimming Bacteria and Self Driven Particle Systems by Arrays of Asymmetric Barriers
- Effective temperature of active matter
- Active colloidal suspensions: Clustering and phase behavior
- Living clusters and crystals from low density suspensions of active colloids
- Light Activated Self-Propelled Colloids
- Light-induced self-assembly of active rectification devices
- Curvature Induced Activation of a Passive Tracer in an Active Bath
- Smoluchowski Diffusion Equation for Active Brownian Swimmers
- A Paradox of State-Dependent Diffusion and How to Resolve It
- Active particles in heterogeneous media display new physics: existence of optimal noise and absence of bands and long-range order
- Trapping of interacting propelled colloidal particles in inhomogeneous media
- Anomalous dynamics of an elastic membrane in an active fluid