Collective entrainment and confinement amplify transport by schooling micro-swimmers
arXiv:2107.10824 · doi:10.1103/PhysRevLett.127.088006
Abstract
Micro-swimmers can serve as cargo carriers that move deep inside complex flow networks. When a school collectively entrains the surrounding fluid, their transport capacity can be enhanced. This effect is quantified with good agreement between experiments with self-propelled droplets and a confined Brinkman squirmer model. The volume of liquid entrained can be much larger than the droplet itself, amplifying the effective cargo capacity over an order of magnitude, even for dilute schools. Hence, biological and engineered swimmers can efficiently transport materials into confined environments.
arXiv comment15 pages, 3 videos. PRL, in press. https://journals.aps.org/prl/accepted/92073Y5eQ3214f79977928f65ce99424e72a173bb
References in corpus (32)
- Double-slit photoelectron interference in strong-field ionization of the neon dimer
- Active Particles in Complex and Crowded Environments
- Self-motile colloidal particles: from directed propulsion to random walk
- Physics of Microswimmers - Single Particle Motion and Collective Behavior
- Emergent behavior in active colloids
- Topographical pathways guide chemical microswimmers
- Hydrodynamics determines collective motion and phase behavior of active colloids
- Bacterial hopping and trapping in porous media
- Self-propulsion of pure water droplets by spontaneous Marangoni stress driven motion
- Chemotaxis and auto-chemotaxis of self-propelling artificial droplet swimmers
- Directed collective motion of bacteria under channel confinement
- Stirring by squirmers
- Mesoscopic Turbulence and Local Order in Janus Particles Self-Propelling under an AC Electric Field
- Curling Liquid Crystal Microswimmers: a cascade of spontaneous symmetry breaking
- Flow-induced phase separation of active particles is controlled by boundary conditions
- Diffusion of an ellipsoid in bacterial suspensions
- Vortex arrays and ciliary tangles underlie the feeding-swimming tradeoff in starfish larvae
- Optimal feeding is optimal swimming for all Péclet numbers
- Entrainment dominates the interaction of microalgae with micron-sized objects
- Fluid transport by individual microswimmers
- Stirring by swimming bodies
- Emergence of bimodal motility in active droplets
- Fluid mixing by curved trajectories of microswimmers
- Induced-charge electro-osmosis around metal and Janus spheres in water: Patterns of flow and breaking symmetries
- Nutrient transport driven by microbial active carpets
- Collisions and rebounds of chemically-active droplets
- The many-body reciprocal theorem and swimmer hydrodynamics
- The flow field around a confined active droplet
- Universal entrainment mechanism governs contact times with motile cells
- Confinement enhances the diversity of microbial flow fields
- Tuning upstream swimming of micro-robots by shape and cargo size
- Fluid transport and mixing by an unsteady microswimmer
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- Self-propulsion of chemically-active droplets
- We the Droplets: A Constitutional Approach to Active and Self-Propelled Emulsions
- Culinary fluid mechanics and other currents in food science
- Oscillatory rheotaxis of active droplets in microchannels
- Spontaneously rotating clusters of active droplets
- Strong confinement of active microalgae leads to inversion of vortex flow and enhanced mixing
- Quasi-two-dimensional bacterial swimming around pillars: enhanced trapping efficiency and curvature dependence
- Thermo-osmotic slip flows around a thermophoretic microparticle characterized by optical trapping of tracers
- Deforming Active Droplets in Viscoelastic Media
- Interfacial activity dynamics of confined active droplets
- Fluid circulation driven by collectively organized metachronal waves in swimming T. aceiti nematodes
- Biohybrid active matter -- the emergent properties of cell-mediated microtransport
- Statistics for an object actively driven by spontaneous symmetry breaking into reversible directions
- Shapes and dynamic regimes of a polar active fluid droplet under confinement
- Emergent clustering due to quorum sensing interactions in active matter
- Cargo size limits and forces of cell-driven microtransport
- Circular motion subject to external alignment under active driving: nonlinear dynamics and the circle map