Curvature Induced Activation of a Passive Tracer in an Active Bath

Abstract

We use numerical simulations to study the motion of a large asymmetric tracer immersed in a low density suspension of self-propelled nanoparticles in two dimensions. Specifically, we analyze how the curvature of the tracer affects its translational and rotational motion in an active environment. We find that even very small amounts of curvature are sufficient for the active bath to impart directed motion to the tracer which results in its effective activation. We propose simple scaling arguments to characterize this induced activity in terms of the curvature of the tracer and the strength of the self-propelling force. Our results suggest new ways of controlling the transport properties of passive tracers in an active medium by carefully tailoring their geometry.

References in corpus (20)

• Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
• Dynamic clustering in active colloidal suspensions with chemical signaling
• A bacterial ratchet motor
• Self-propelled Janus particles in a ratchet: Numerical simulations
• Self-Starting Micromotors in a Bacterial Bath
• Enhanced diffusion due to active swimmers at a solid surface
• Dynamics of Self-Propelled Particles Under Strong Confinement
• Rectification of Swimming Bacteria and Self Driven Particle Systems by Arrays of Asymmetric Barriers
• Photoactivated Colloidal Dockers for Cargo Transportation
• Emergent collective phenomena in a mixture of hard shapes through active rotation
• How to capture active particles
• Transport powered by bacterial turbulence
• Deformable self-propelled particles
• Fluctuations and Rheology in Active Bacterial Suspensions
• Colloids in a bacterial bath: simulations and experiments
• Casimir Effect in Active Matter Systems
• Anomalous Thermomechanical Properties of a Self-propelled Colloidal Fluid
• Soft deformable self-propelled particles
• Controlling active self-assembly through broken particle symmetries
• Capturing self-propelled particles in a moving microwedge

Cited by in corpus (53)

• Active Particles in Complex and Crowded Environments
• An active approach to colloidal self-assembly
• Towards a statistical mechanical theory of active fluids
• Topological Sound and Flocking on Curved Surfaces
• Activity induced collapse and re-expansion of rigid polymers
• Entrainment dominates the interaction of microalgae with micron-sized objects
• Swim pressure on walls with curves and corners
• Shape and Displacement Fluctuations in Soft Vesicles Filled by Active Particles
• Generic long-range interactions between passive bodies in an active fluid
• Mechanical pressure and momentum conservation in dry active matter
• The Anomalous Transport of Tracers in Active Baths
• Phase separation and large deviations of lattice active matter
• Active Brownian particles near straight or curved walls: Pressure and boundary layers
• Elasticity-based polymer sorting in active fluids: A Brownian dynamics study
• Clogging and Depinning of Ballistic Active Matter Systems in Disordered Media
• Active motion on curved surfaces
• Topotaxis of active Brownian particles
• Effective equilibrium states in mixtures of active particles driven by colored noise
• Microscopic derivation of the hydrodynamics of active-Brownian-particle suspensions
• Anisotropic dynamics of a self-assembled colloidal chain in an active bath
• Motion of two micro-wedges in a turbulent bacterial bath
• Non-Gaussian displacements in active transport on a carpet of motile cells
• Inclusions, Boundaries and Disorder in Scalar Active Matter
• Effective Langevin equations for a polar tracer in an active bath
• Anomalous dynamics of an elastic membrane in an active fluid
• Statistical Mechanics of Transport Processes in Active Fluids II: Equations of Hydrodynamics for Active Brownian Particles
• Activity-assisted self-assembly of colloidal particles
• Directional Locking Effects for Active Matter Particles Coupled to a Periodic Substrate
• Generalized Archimedes' principle in active fluids
• Force generation in confined active fluids: The role of microstructure
• Transport of the moving barrier driven by chiral active particles
• Active fluids at circular boundaries: Swim pressure and anomalous droplet ripening
• Aggregate morphology of active Brownian particles on porous, circular walls
• Vorticity Determines the Force on Bodies Immersed in Active Fluids
• Intrinsic and extrinsic thermodynamics for stochastic population processes with multi-level large-deviation structure
• Confinement-induced alternating interactions between inclusions in an active fluid
• Beating of grafted chains induced by active Brownian particles
• Forces in inhomogeneous open active-particle systems
• Clogging, Dynamics and Reentrant Fluid for Active Matter on Periodic Substrates
• Mechanisms of carrier transport induced by a microswimmer bath
• Universal reshaping of arrested colloidal gels via active doping
• Single-File Diffusion of Active Brownian Particles
• Kinetic temperature and pressure of an active Tonks gas
• Crystallization and flow in active patch systems
• Collective dynamics of active dumbbells near a circular obstacle
• Effective interactions mediated between two permeable disks in an active fluid
• Sorting of binary active-passive mixtures in designed microchannels
• Phase behaviour of active particles in block copolymer melts
• A Hitchhiker's Guide To Active Motion
• Stabilization in the eye of a cyclone
• Effective diffusion of a tracer in active bath: a path-integral approach
• Passive Janus Particles Are Self-propelled in Active Nematics
• Oscillatory active microrheology of active suspensions