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 (6)

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Cited by in corpus (6)

• Active dipole clusters: from helical motion to fission
• Lane formation in a driven attractive fluid
• Hydrodynamic interactions dominate the structure of active swimmers' pair distribution functions
• Anomalous Dynamical Responses in a Driven System
• Lane formation dynamics of oppositely self-driven binary particles: Effects of density and finite system size
• Reentrant Melting of Lanes of Rough Circular Discs