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- W4206564145 abstract "While motile bacteria display rich dynamics in dense colonies, the phoretic nature of artificial micro-swimmers restricts their activity when crowded. Here we introduce a new class of synthetic micro-swimmers that are driven solely by light. By coupling a light absorbing particle to a fluid droplet we produce a colloidal chimera that transforms optical power into propulsive thermo-capillary action. The swimmers' internal drive allows them to operate for a long duration (days) and remain active when crowded, forming a high density fluid phase. We find that above a critical concentration, swimmers form a long lived crowded state that displays internal dynamics. When passive particles are introduced, the dense swimmer phase can re-arrange to spontaneously corral the passive particles. We derive a geometrical, depletion-like condition for corralling by identifying the role the passive particles play in controlling the effective concentration of the micro-swimmers." @default.
- W4206564145 created "2022-01-25" @default.
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- W4206564145 date "2022-01-10" @default.
- W4206564145 modified "2023-09-26" @default.
- W4206564145 title "Cooperation in a fluid swarm of fuel-free micro-swimmers" @default.
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- W4206564145 doi "https://doi.org/10.1038/s41467-021-27870-9" @default.
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