Load response of shape-changing microswimmers scales with their swimming efficiency

Physical Review. E
Benjamin M Friedrich

Abstract

External forces acting on a microswimmer can feed back on its self-propulsion mechanism. We discuss this load response for a generic microswimmer that swims by cyclic shape changes. We show that the change in cycle frequency is proportional to the Lighthill efficiency of self-propulsion. As a specific example, we consider Najafi's three-sphere swimmer. The force-velocity relation of a microswimmer implies a correction for a formal superposition principle for active and passive motion.

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Citations

Mar 29, 2020·Proceedings of the National Academy of Sciences of the United States of America·Nicola PellicciottaPietro Cicuta
Jan 26, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Kirsty Y Wan, Gáspár Jékely
Apr 10, 2021·The European Physical Journal. E, Soft Matter·Anton Solovev, Benjamin M Friedrich
May 12, 2021·The European Physical Journal. E, Soft Matter·Friedrich StriggowMariana Medina-Sánchez

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