Trapping of interacting propelled colloidal particles in inhomogeneous media.

A trapping mechanism for propelled colloidal particles based on an inhomogeneous drive is presented and studied by means of computer simulations. In experiments this method can be realized using photophoretic Janus particles driven by a light source, which is partially blocked by a shading mask. This leads to an accumulation of particles in the passive part. An equation for an accumulation parameter is derived using the effective inhomogeneous diffusion constant generated by the inhomogeneous drive. The impact of particle interaction on the trapping mechanism is studied, as well as the interplay between passivity-induced trapping and the emergent self-clustering of systems containing a high density of active particles. The combination of both effects makes the clusters more controllable for applications.

• Publication year

  2014

• Venue

  Physical review. E, Statistical, nonlinear, and soft matter physics

• Publication date

  2014-07-03

• Fields of study

  Physics, Medicine, Materials Science, Chemistry

• Identifiers
  DOI 10.1103/PhysRevE.92.012304arXiv 1407.0983PMID 26274159
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

• Random Walks in Biology

  2018cited by this paper
• Soft Matter

  2014cited by this paper
• Self-induced polar order of active Brownian particles in a harmonic trap.

  2014cited by this paper
• Phase behaviour of active Brownian particles: the role of dimensionality.

  2013cited by this paper
• Reentrant phase behavior in active colloids with attraction.

  2013cited by this paper
• Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles.

  2013cited by this paper
• Self-Propelled Micromotors for Cleaning Polluted Water

  2013cited by this paper
• Hydrodynamic capture of microswimmers into sphere-bound orbits.

  2013cited by this paper
• Optically controlled thermophoretic trapping of single nano-objects.

  2013cited by this paper
• Fuel-free locomotion of Janus motors: magnetically induced thermophoresis.

  2013cited by this paper
• Structure and dynamics of a phase-separating active colloidal fluid.

  2012cited by this paper
• Diffusive transport without detailed balance in motile bacteria: does microbiology need statistical physics?

  2012cited by this paper
• Athermal phase separation of self-propelled particles with no alignment.

  2012cited by this paper
• Bacterial thermotaxis by speed modulation.

  2012cited by this paper
• How to capture active particles.

  2012cited by this paper
• Active Brownian motion tunable by light

  2011cited by this paper
• Brownian motion of a self-propelled particle

  2011cited by this paper
• Active motion of a Janus particle by self-thermophoresis in a defocused laser beam.

  2010cited by this paper
• Chemo and phototactic nano/microbots.

  2009cited by this paper
• Generic theory of colloidal transport

  2008cited by this paper
• Self-motile colloidal particles: from directed propulsion to random walk.

  2007cited by this paper
• Microscopic artificial swimmers

  2005cited by this paper
• Propulsion of a molecular machine by asymmetric distribution of reaction products.

  2005cited by this paper
• Molecular machines.

  2004cited by this paper
• Reviews of Modern Physics

  2002cited by this paper
• Theory of continuum random walks and application to chemotaxis.

  1993cited by this paper
• Hydrodynamics

  1924cited by this paper
• Annalen der Physik

  year unknowncited by this paper

• Inertia effects in the spatial distribution and dynamics of active particles with space-dependent activity.

  2025cites this paper
• Trapping aligning self-propelled particles into static clusters.

  2025cites this paper
• Inertial self-propelled particles in anisotropic environments

  2023cites this paper
• Active osmoticlike pressure on permeable inclusions.

  2022cites this paper
• Orientation-Dependent Propulsion of Active Brownian Spheres: From Self-Advection to Programmable Cluster Shapes.

  2022cites this paper
• Interacting particles in an activity landscape

  2022cites this paper
• Active particles driven by competing spatially dependent self-propulsion and external force

  2022cites this paper
• Dynamics of active particles with space-dependent swim velocity.

  2021cites this paper
• Effective interactions mediated between two permeable disks in an active fluid

  2020cites this paper
• Morphological transitions of active Brownian particle aggregates on porous walls.

  2020cites this paper
• Aggregate morphology of active Brownian particles on porous, circular walls.

  2020cites this paper
• Hydrodynamics of Active Defects: From Order to Chaos to Defect Ordering

  2019cites this paper
• Colloidal Brazil nut effect in microswimmer mixtures induced by motility contrast.

  2019cites this paper
• Propagating density spikes in light-powered motility-ratchets.

  2019cites this paper
• Active Brownian motion with orientation-dependent motility: theory and experiments.

  2019cites this paper
• An attraction-repulsion transition of force on wedges induced by active particles.

  2018cites this paper
• Least-rattling feedback from strong time-scale separation.

  2017cites this paper
• Pseudochemotaxis in inhomogeneous active Brownian systems.

  2017cites this paper
• Crystallization and flow in active patch systems.

  2017cites this paper
• Brownian systems with spatially inhomogeneous activity.

  2017cites this paper
• Spontaneous membrane formation and self-encapsulation of active rods in an inhomogeneous motility field.

  2017cites this paper
• Collective ratchet effects and reversals for active matter particles on quasi-one-dimensional asymmetric substrates.

  2016cites this paper
• Active Particles in Complex and Crowded Environments

  2016cites this paper
• Phototaxis of synthetic microswimmers in optical landscapes

  2016cites this paper
• Aktive Brown'sche Bewegung kolloidaler Teilchen

  2015cites this paper
• Brush in the bath of active particles: Anomalous stretching of chains and distribution of particles.

  2015cites this paper