Emergent comet-like swarming of optically driven thermally active colloids

Abstract

We propose a simple system of optically driven colloids that convert light into heat and move in response to self- and collectively- generated thermal gradients. We show that the system exhibits self-organization into a moving comet-like swarm and characterize the structure and response of the swarm to a light intensity dependent external tuning parameter. We observe many interesting features in this nonequilibrium system including circulation and evaporation, intensity-dependent shape, density and temperature fluctuations, and ejection of hot colloids from the swarm tip.

4 pages, 2 figures

References in corpus (6)

• Novel type of phase transition in a system of self-driven particles
• Self-motile colloidal particles: from directed propulsion to random walk
• Spontaneous motion in hierarchically assembled active matter
• Emergence of macroscopic directed motion in populations of motile colloids
• Propulsion of a molecular machine by asymmetric distribution of reaction--products
• Designing phoretic micro- and nano-swimmers

Cited by in corpus (38)

• Emergent behavior in active colloids
• Computational models for active matter
• Phototaxis of synthetic microswimmers in optical landscapes
• 'Fuelled' motion: phoretic motility and collective behaviour of active colloids
• Active phase separation in mixtures of chemically interacting particles
• Unusual swelling of a polymer in a bacterial bath
• Polarization of active Janus particles
• Self-assembly of Active Colloidal Molecules with Dynamic Function
• Pairing, waltzing and scattering of chemotactic active colloids
• Active turbulence in microswimmer suspensions -- the role of active hydrodynamic stress and volume exclusion
• Effective dynamics of microorganisms that interact with their own trail
• Clustering of Magnetic Swimmers in a Poiseuille Flow
• Exact phoretic interaction of two chemically-active particles
• Collective Dynamics of Dividing Chemotactic Cells
• Active Brownian motion with orientation-dependent motility: theory and experiments
• Interactions in Active Colloids
• Multicellular self-organization of P. aeruginosa due to interactions with secreted trails
• Self-organization of primitive metabolic cycles due to non-reciprocal interactions
• Theory of light-activated catalytic Janus particles
• Collective Dynamics in a Monolayer of Squirmers Confined to a Boundary by Gravity
• Nonequilibrium polarity-induced mechanism for chemotaxis: emergent Galilean symmetry and exact scaling exponents
• Hydrodynamic Swarming of Thermally Active Dimeric Colloids
• Exact axisymmetric interaction of phoretically active Janus particles
• Motility versus fluctuations in mixtures of self-propelled and passive agents
• Activity-assisted self-assembly of colloidal particles
• Defect Solutions of the Non-reciprocal Cahn-Hilliard Model: Spirals and Targets
• Configuration Dynamics of a Flexible Polymer Chain in a Bath of Chiral Active Particles
• Magnetic microswimmers exhibit Bose-Einstein-like condensation
• Self-assembly of active core corona particles into highly ordered and self-healing structures
• Diffusiophoretic propulsion of an isotropic active colloidal particle near a finite-sized disk embedded in a planar fluid-fluid interface
• Chirotactic response of microswimmers in fluids with odd viscosity
• Percolation transition in phase separating active fluid
• Interaction-motif-based classification of self-organizing metabolic cycles
• Inertial self-propelled particles in anisotropic environments
• Percolation transitions in the binary mixture of active Brownian particles with different softness
• Clustering-induced self-propulsion of isotropic autophoretic particles
• Thermotaxis of Janus Particles
• Yielding in dense active matter