Lane formation in a system of dipolar microswimmers

Abstract

Using Brownian Dynamics (BD) simulations we investigate the non-equilibrium structure formation of a two-dimensional (2D) binary system of dipolar colloids propelling in opposite directions. Despite of a pronounced tendency for chain formation, the system displays a transition towards a laned state reminiscent of lane formation in systems with isotropic repulsive interactions. However, the anisotropic dipolar interactions induce novel features: First, the lanes have themselves a complex internal structure characterized by chains or clusters. Second, laning occurs only in a window of interaction strengths. We interprete our findings by a phase separation process and simple force balance arguments.

References in corpus (14)

• Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
• Phase diagram of patchy colloids: towards empty liquids
• Induced-charge Electrophoresis of Metallo-dielectric Particles
• Freezing by Heating in a Driven Mesoscopic System
• Phase separation and rotor self-assembly in active particle suspensions
• Reentrant Phase Behavior in Active Colloids with Attraction
• Active colloidal suspensions: Clustering and phase behavior
• Dynamics of lane formation in driven binary complex plasmas
• Reentrance effect in the lane formation of driven colloids
• Influence of hydrodynamic interactions on lane formation in oppositely charged driven colloids
• Pattern formation in colloidal mixtures under external driving fields
• Unidirectional laning and migrating cluster crystals in confined self-propelled particle systems
• Instabilities and turbulence-like dynamics in an oppositely driven binary particle mixture
• Novel structure formation of a phase separating colloidal fluid in a ratchet potential

Cited by in corpus (21)

• Dynamical Density Functional Theory For Microswimmers
• Clustering and phase separation of circle swimmers dispersed in a monolayer
• Swimming trajectories of a three-sphere microswimmer near a wall
• Dynamical self-assembly of dipolar active Brownian particles in two dimensions
• Analytical approach to chiral active systems: suppressed phase separation of interacting Brownian circle swimmers
• State diagram of a three-sphere microswimmer in a channel
• Active dipole clusters: from helical motion to fission
• Emergent vortices and phase separation in systems of chiral active particles with dipolar interactions
• Towards an analytical description of active microswimmers in clean and in surfactant-covered drops
• Lane formation in a driven attractive fluid
• Hydrodynamic interactions dominate the structure of active swimmers' pair distribution functions
• Multi-species dynamical density functional theory for microswimmers: derivation, orientational ordering, trapping potentials, and shear cells
• Particle-scale statistical theory for hydrodynamically induced polar ordering in microswimmer suspensions
• Anomalous Dynamical Responses in a Driven System
• Lane formation dynamics of oppositely self-driven binary particles: Effects of density and finite system size
• Membranes for spontaneous separation of pedestrian counter flows
• Length-scales of Dynamic Heterogeneity in a Driven Binary Colloid
• Microscopic Insights into Dynamical Heterogeneity in a Lane-forming Liquid
• Dynamics of a simple model microswimmer in an anisotropic fluid: implications for alignment behavior and active transport in a nematic liquid crystal
• Reentrant Melting of Lanes of Rough Circular Discs
• Modelling vehicle and pedestrian collective dynamics: Challenges and advances