Jamming of active particles in narrow pores: Implications for ratchet effect and diffusion coefficient
arXiv:2508.10483 · doi:10.1088/1742-5468/adefb0
Abstract
We study the behavior of colloidal active particles interacting via steric repulsion in various quasi-1D geometries. We mainly focus on active particles with high Péclet number. We discuss 3 phenomena closely tied to those systems: motility-induced phase separation (or dynamical freezing), ratchet effect (which takes place if the geometry has broken spatial symmetry), and the enhanced diffusion coefficient. We study those particles using numerical simulations employing an ASEP-like model. Besides direct numerical simulations we study the model by mean-field approximation and by solving the coarse-grained hydrodynamic equations.
References in corpus (21)
- Self-motile colloidal particles: from directed propulsion to random walk
- Motility-Induced Phase Separation
- Statistical Mechanics of Interacting Run-and-Tumble Bacteria
- Self-Starting Micromotors in a Bacterial Bath
- Rectification of Swimming Bacteria and Self Driven Particle Systems by Arrays of Asymmetric Barriers
- Transport powered by bacterial turbulence
- Traffic jams, gliders, and bands in the quest for collective motion
- Mapping out of equilibrium into equilibrium in one-dimensional transport models
- Directed transport of active particles over asymmetric energy barriers
- Active Brownian motion in a narrow channel
- Rectification and diffusion of self-propelled particles in a two-dimensional corrugated channel
- Ratchet transport powered by chiral active particles
- Generalized Exclusion Processes: Transport Coefficients
- Tracer dynamics in one dimensional gases of active or passive particles
- An Introduction to Motility-Induced Phase Separation
- Rheology of active fluids
- Exact hydrodynamics and onset of phase separation for an active exclusion process
- Hydrodynamic approximations for driven dense colloidal mixtures in narrow pores
- Short-range and long-range correlations in driven dense colloidal mixtures in narrow pores
- Three-state active lattice gas: a discrete Vicseklike model with excluded volume
- Ratchet effect and jamming in dense mixtures of active and passive colloids in narrow pores