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Journal Article

Collective Entrainment and Confinement Amplify Transport by Schooling Microswimmers

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Jin,  Chenyu
Group Active soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Maass,  Corinna C.
Group Active soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Jin, C., Chen, Y., Maass, C. C., & Mathijssen, A. J. (2021). Collective Entrainment and Confinement Amplify Transport by Schooling Microswimmers. Physical Review Letters, 127: 088006. doi:10.1103/PhysRevLett.127.088006.


Cite as: https://hdl.handle.net/21.11116/0000-0009-200B-7
Abstract
Microswimmers 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.