Response of active Brownian particles to boundary driving

Abstract

We computationally study the behavior of underdamped active Brownian particles in a sheared channel geometry. Due to their underdamped dynamics, the particles carry momentum a characteristic distance away from the boundary before it is dissipated into the substrate. We correlate this distance with the persistence of particle trajectories, determined jointly by their friction and self-propulsion. Within this characteristic length, we observe new and counterintuitive phenomena stemming from the interplay of activity, interparticle interactions, and the boundary driving. Depending on values of friction and self-propulsion, interparticle interactions can either aid or hinder momentum transport. More dramatically, in certain cases we observe a flow reversal near the wall, which we correlate with an induced polarization of the particle self-propulsion directions. We rationalize these results in terms of a simple kinetic picture of particle trajectories.

arXiv comment10 pages, 9 figures

References in corpus (57)

• Active Particles in Complex and Crowded Environments
• The Mechanics and Statistics of Active Matter
• Motility-Induced Phase Separation
• Spontaneous motion in hierarchically assembled active matter
• Physics of Microswimmers - Single Particle Motion and Collective Behavior
• Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
• Athermal Phase Separation of Self-Propelled Particles with no Alignment
• Emergence of macroscopic directed motion in populations of motile colloids
• Long-lived Giant Number Fluctuations in a Swarming Granular Nematic
• Shear thickening in concentrated suspensions: phenomenology, mechanisms, and relations to jamming
• Sedimentation of active colloidal suspensions
• Pressure is not a state function for generic active fluids
• Emergent behavior in active colloids
• Superfluid transport of information in turning flocks of starlings
• A continuum theory of phase separation kinetics for active Brownian particles
• Phase behaviour of active Brownian particles: The role of dimensionality
• Full phase diagram of active Brownian disks: from melting to motility-induced phase separation
• Activity-induced phase separation and self-assembly in mixtures of active and passive particles
• Sedimentation, trapping, and rectification of dilute bacteria
• Self-propelled Janus particles in a ratchet: Numerical simulations
• Self-Starting Micromotors in a Bacterial Bath
• Rectification of Swimming Bacteria and Self Driven Particle Systems by Arrays of Asymmetric Barriers
• Cooperative Motion of Active Brownian Spheres in Three-Dimensional Dense Suspensions
• Inertial delay of self-propelled particles
• Reentrant Phase Behavior in Active Colloids with Attraction
• Transport powered by bacterial turbulence
• Minimal model of active colloids highlights the role of mechanical interactions in controlling the emergent behavior of active matter
• Nonequilibrium glassy dynamics of self-propelled hard disks
• Active colloidal suspensions exhibit polar order under gravity
• Nonequilibrium steady states in a vibrated-rod monolayer: tetratic, nematic and smectic correlations
• Living clusters and crystals from low density suspensions of active colloids
• Tunable long range forces mediated by self-propelled colloidal hard spheres
• Hidden entropy production and work fluctuations in an ideal active gas
• The nonequilibrium glassy dynamics of self-propelled particles
• Macroscopic Discontinuous Shear Thickening vs Local Shear Jamming in Cornstarch
• Run-and-Tumble Dynamics of Self-Propelled Particles in Confinement
• The force on a body in active matter
• Active vs. Passive Hard Disks Against a Membrane : Mechanical Pressure and Instability
• A classical nucleation theory description of active colloid assembly
• Frozen steady states in active systems
• Generic long-range interactions between passive bodies in an active fluid
• On the distribution and swim pressure of run-and-tumble particles in confinement
• Dynamics and density distribution of strongly confined noninteracting nonaligning self-propelled particles in a nonconvex boundary
• Active particles under confinement: Aggregation at the wall and gradient formation inside a channel
• Mechanical pressure and momentum conservation in dry active matter
• Crystallizing hard-sphere glasses by doping with active particles
• Steady-state distributions of ideal active Brownian particles under confinement and forcing
• Active Brownian particles near straight or curved walls: Pressure and boundary layers
• Linear response and correlation of a self-propelled particle in the presence of external fields
• Current fluctuations of interacting active Brownian particles
• The curved kinetic boundary layer of active matter
• Microscopic derivation of the hydrodynamics of active-Brownian-particle suspensions
• Transport of underdamped active particles in ratchet potentials
• Statistical Mechanics of Transport Processes in Active Fluids II: Equations of Hydrodynamics for Active Brownian Particles
• Statistical mechanics of transport processes in active fluids: Equations of hydrodynamics
• Ratchet-induced variations in bulk states of an active ideal gas
• Dynamical response of a system of passive or active swimmers to time-periodic forcing

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• Jerky active matter: a phase field crystal model with translational and orientational memory
• Shape matters: A Brownian microswimmer in a channel
• Active particles with fractional rotational Brownian motion
• A large deviation theory perspective on nanoscale transport phenomena
• Shear Induced Orientational Ordering in Active Glass
• Relaxation in a Phase-separating Two-dimensional Active Matter System with Alignment Interaction
• Boundary layers, transport and universal distribution in boundary driven active systems