Motility-sorting of self-propelled particles in micro-channels

Abstract

Spontaneous segregation of run-and-tumble particles with different velocities in microchannels is investigated by numerical simulations. Self-propelled particles are known to accumulate in the proximity of walls. Here we show how fast particles expel slower ones from the wall leading to a segregated state. The mechanism is understood as a function of particle velocities, particle density, or channel width. In the presence of an external fluid flow, particles with two different velocities segregate due to their different particle fluxes. Promising applications can be found in the development of microfluidic lab-on-a-chip devices for sorting of particles with different motilities.

References in corpus (30)

• Collective motion
• The hydrodynamics of swimming microorganisms
• Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
• Athermal Phase Separation of Self-Propelled Particles with no Alignment
• Meso-scale turbulence in living fluids
• Fluid dynamics and noise in bacterial cell-cell and cell-surface scattering
• Dynamic clustering in active colloidal suspensions with chemical signaling
• A bacterial ratchet motor
• Microswimmers in Patterned Environments
• Confinement Stabilizes a Bacterial Suspension into a Spiral Vortex
• A continuum theory of phase separation kinetics for active Brownian particles
• The Reverse Brazil Nut Problem: Competition between Percolation and Condensation
• Nonlinear dynamics of a microswimmer in Poiseuille flow
• Sedimentation, trapping, and rectification of dilute bacteria
• Self-propelled Janus particles in a ratchet: Numerical simulations
• Self-Starting Micromotors in a Bacterial Bath
• Cooperative Motion of Active Brownian Spheres in Three-Dimensional Dense Suspensions
• Aggregation of self-propelled colloidal rods near confining walls
• Spontaneous Segregation of Self-Propelled Particles with Different Motilities
• How to capture active particles
• Sorting of Chiral Microswimmers
• Entropic Splitter for Particle Separation
• Swarm behavior of self-propelled rods and swimming flagella
• Self-Propelled Rods near Surfaces
• Periodic and Quasiperiodic Motion of an Elongated Microswimmer in Poiseuille Flow
• Collective behavior of penetrable self-propelled rods in two dimensions
• Influence of swimming strategy on microorganism separation by asymmetric obstacles
• Capturing self-propelled particles in a moving microwedge
• Rectification of self-propelled particles by symmetric barriers
• Motility fractionation of bacteria by centrifugation

Cited by in corpus (27)

• Active Particles in Complex and Crowded Environments
• Physics of Microswimmers - Single Particle Motion and Collective Behavior
• Tunable long range forces mediated by self-propelled colloidal hard spheres
• Run-and-Tumble Dynamics of Self-Propelled Particles in Confinement
• Upstream swimming in microbiological flows
• Can the self-propulsion of anisotropic microswimmers be described by using forces and torques?
• Sorting motile rods by activity
• Trapping and sorting active particles: motility-induced condensation & smectic defects
• Mixing and demixing of binary mixtures of polar chiral active particles
• Chirality separation of mixed chiral microswimmers in a periodic channel
• Ratchet transport powered by chiral active particles
• Directed Autonomous Motion and Chiral Separation of Self-Propelled Janus Particles in Convection Roll Arrays
• Active Brownian Particles Escaping a Channel in Single File
• Disrupting the wall accumulation of human sperm cells by artificial corrugation
• Motion of two micro-wedges in a turbulent bacterial bath
• Sorting of chiral active particles driven by rotary obstacles
• Narrow-escape time and sorting of active particles in circular domains
• Collective behavior of self-propelled rods with quorum sensing
• Microorganism Billiards
• Mechanisms of carrier transport induced by a microswimmer bath
• The hydrodynamics of slender swimmers near deformable interfaces
• Rectification of Twitching bacteria through narrow channels: A numerical simulations study
• Theory of active particle penetration through a planar elastic membrane
• Homogeneous and heterogeneous populations of active rods in two-dimensional channels
• Active dipolar spheroids in shear flow and transverse field: Population splitting, cross-stream migration and orientational pinning
• Demixing of two species via reciprocally concentration-dependent diffusivity
• Mass-based separation of active Brownian particles in an asymmetric channel