Sorting motile rods by activity
arXiv:1603.08535 · doi:10.1103/PhysRevE.99.032605
Abstract
We show, through experiments and simulations, that geometrically polar granular rods, rendered active by the transduction of vertical vibration, undergo a collective trapping phase transition in the presence of a V-shaped obstacle when the opening angle drops below a threshold value. We propose a mechanism that accounts qualitatively for the transition, based on the cooperative reduction of angular noise with increasing area fraction. We exploit the sensitivity of trapping to the persistence of directed motion to sort particles based on the statistical properties of their activity.
5 pages, 4 figures, Supplementary videos: http://www.tifrh.res.in/tcis/events/sriram_videos/Sorting_rods_supplementary/
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- Collective mechano-response dynamically tunes cell-size distributions in growing bacterial colonies
- Narrow-escape time and sorting of active particles in circular domains
- Morphological transitions of active Brownian particle aggregates on porous walls
- Programming tunable active dynamics in a self-propelled robot
- The escape problem for active particles confined to a disc
- Vorticity Determines the Force on Bodies Immersed in Active Fluids
- Aggregate morphology of active Brownian particles on porous, circular walls
- Motile dissenters disrupt the flocking of active granular matter
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- Controlling the transport of active matter in disorderd lattices of asymmetrical obstacles
- Defect dynamics in active smectics induced by confining geometry and topology
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- Collective dynamics of active dumbbells near a circular obstacle
- Bulk condensation by an active interface
- Phases and correlations in active nematic granular systems
- Emergent short-range repulsion for attractively coupled active particles
- Sorting of binary active-passive mixtures in designed microchannels
- Spontaneous Emergence of Run-and-Tumble-Like Dynamics in a Robotic Analog of \textit{Chlamydomonas}: Experiment and Theory
- Dynamical Boundary Following and Corner Trapping of Undulating Worms
- Topology of orientational defects in confined smectic liquid crystals
- Confinement-induced collective motion in suspensions of run-and-tumble particles
- From Attraction to Repulsion: Emergent Interactions in Harmonically Coupled Active Binary System