Polarization of active Janus particles

Abstract

We study the collective motion of Janus particles in a temperature or concentration gradient. Because of the torque exerted by an external or self-generated field, the particles align their axis on this gradient. In a swarm of self-driven particles, this polarization enhances the interactiondriven confinement. Self-polarization in a non-uniform laser beam could be used for guiding hot particles along a given trajectory.

5 pages, 2 figures

References in corpus (5)

• Self-motile colloidal particles: from directed propulsion to random walk
• Propulsion of a molecular machine by asymmetric distribution of reaction--products
• Designing phoretic micro- and nano-swimmers
• When are active Brownian particles and run-and-tumble particles equivalent? Consequences for motility-induced phase separation
• Flow pattern in the vicinity of self-propelling hot Janus particles

Cited by in corpus (36)

• Emergent behavior in active colloids
• Phototaxis of synthetic microswimmers in optical landscapes
• Dynamic clustering and chemotactic collapse of self-phoretic active particles
• Viscotaxis: microswimmer navigation in viscosity gradients
• Pairing, waltzing and scattering of chemotactic active colloids
• Which Interactions Dominate in Active Colloids?
• Hydrodynamic interaction of a self-propelling particle with a wall: Comparison between an active Janus particle and a squirmer model
• Thermally driven Marangoni surfers
• Self-propulsion mechanism of active Janus particles in near-critical binary mixtures
• Chemotaxis of artificial microswimmers in active density waves
• Hot Microswimmers
• Clustering and phase behaviour of attractive active particles with hydrodynamics
• Interactions in Active Colloids
• Hydrodynamics defines the stable swimming direction of spherical squirmers in a nematic liquid crystal
• Self-Polarizing Microswimmers in Active Density Waves
• Theory of light-activated catalytic Janus particles
• Brownian systems with spatially inhomogeneous activity
• Non-equilibrium Properties of an Active Nanoparticle in a Harmonic Potential
• Taxis of Artificial Swimmers in a Spatio-Temporally Modulated Activation Medium
• Polarization-Density Patterns of Active Particles in Motility Gradients
• Electrophoresis of active Janus particles
• Dynamics of a helical swimmer crossing viscosity gradients
• Anomalous diffusion and diffusion anomaly in confined Janus dumbbells
• The escape problem for active particles confined to a disc
• Confinement effects on the properties of Janus dimers
• The stochastic motion of self-thermophoretic Janus particles
• Self-generated gradients stabilize the hydrodynamic instabilities in active suspensions
• Cargo Towing by Artificial Swimmers
• Linear and angular motion of self-diffusiophoretic Janus particles
• Orientational dynamics of a heated Janus particle
• Patchy landscapes promote stability of small groups
• Particle motion driven by non-uniform thermodynamic forces
• Inverted Sedimentation of Active Particles in Unbiased ac Fields
• Efficient Optical Manipulation of Janus Particles by Optical Nanofibers
• Viscotaxis of chiral microswimmer in viscosity gradients
• Thermotaxis of Janus Particles