Synchronized Rotations of Active Particles on Chemical Substrates
arXiv:2303.14489 · doi:10.1039/D3SM00452J
Abstract
Many microorganisms use chemical `signaling' - a quintessential self-organizing strategy in non-equilibrium - that can induce spontaneous aggregation and coordination in behavior. Using synthetic signaling as a design principle, we construct a minimal model of active Brownian particles (ABPs) having soft repulsive interactions on a chemically quenched patterned substrate. The interplay between chemo-phoretic interactions and activity is numerically investigated for a proposed variant of the Keller-Segel model for chemotaxis. Such competition not only results in a chemo-motility-induced phase-separated state but also a new cohesive clustering phase with synchronized rotations. Our results suggest that rotational order can emerge in systems by virtue of activity and repulsive interactions alone without an explicit alignment interaction. These rotations can also be exploited by designing mechanical devices that can generate reorienting torques using active particles.
arXiv comment8 pages, 9 figures
References in corpus (29)
- Novel type of phase transition in a system of self-driven particles
- Simulating Dynamical Features of Escape Panic
- Active Particles in Complex and Crowded Environments
- Collective motion
- Self-motile colloidal particles: from directed propulsion to random walk
- Flocks, herds, and schools: A quantitative theory of flocking
- Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
- Athermal Phase Separation of Self-Propelled Particles with no Alignment
- Dynamic clustering in active colloidal suspensions with chemical signaling
- Microswimmers in Patterned Environments
- A continuum theory of phase separation kinetics for active Brownian particles
- Crystallization in a dense suspension of self-propelled particles
- Enhanced diffusion and ordering of self-propelled rods
- The Rotating Vicsek Model: Pattern Formation and Enhanced Flocking in Chiral Active Matter
- Continuum Percolation Thresholds in Two Dimensions
- Collective Thermotaxis of Thermally Active Colloids
- Clustering and pattern formation in chemorepulsive active colloids
- Phase separation in binary mixtures of active and passive particles
- Viscotaxis: microswimmer navigation in viscosity gradients
- Pattern Formation in Chemically Interacting Active Rotors with Self-Propulsion
- Exact phoretic interaction of two chemically-active particles
- Microphase separation in two dimensional suspensions of self-propelled spheres and dumbbells
- Disorder-Induced Long-Ranged Correlations in Scalar Active Matter
- Hydrodynamic Theory of Flocking in the Presence of Quenched Disorder
- Enhanced dynamics of active Brownian particles in periodic obstacle arrays and corrugated channels
- Active colloidal propulsion over a crystalline surface
- Polar flock in the presence of random quenched rotators
- Self-generated gradients stabilize the hydrodynamic instabilities in active suspensions
- Emergent Synchronization and Flocking in Purely Repulsive Self-Navigating Particles