Hydrodynamic Choreographies of Microswimmers

We unveil orbital topologies of two nearby swimming microorganisms using an artificial microswimmer, called Quadroar . Depending on the initial conditions of the microswimmers, we find diverse families of attractors including dynamical equilibria, bound orbits, braids, and pursuit–evasion games. We...

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Bibliographic Details
Published in:Scientific reports 2018-02, Vol.8 (1), p.3670-10, Article 3670
Main Authors: Mirzakhanloo, Mehdi, Jalali, Mir Abbas, Alam, Mohammad-Reza
Format: Article
Language:English
Subjects:
639/766/189
639/766/747
Humanities and Social Sciences
Microorganisms
multidisciplinary
Science
Science (multidisciplinary)
Streaming
Swimming
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Summary:We unveil orbital topologies of two nearby swimming microorganisms using an artificial microswimmer, called Quadroar . Depending on the initial conditions of the microswimmers, we find diverse families of attractors including dynamical equilibria, bound orbits, braids, and pursuit–evasion games. We also observe a hydrodynamic slingshot effect: a system of two hydrodynamically interacting swimmers moving along braids can advance in space faster than non-interacting swimmers that have the same actuation parameters and initial conditions as the interacting ones. Our findings suggest the existence of complex collective behaviors of microswimmers, from equilibrium to rapidly streaming states.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-21832-w