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arXiv · 1701.01224

Swimmer-microrheology

Kento Yasuda·Ryuichi Okamoto·Shigeyuki Komura
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Abstract

We discuss a locomotion of a three-sphere microswimmer in a viscoelastic medium and propose a new type of active microrheology. We derive a relation which connects average swimming velocity and frequency-dependent viscosity of the surrounding medium. In this relation, the viscous contribution can exist only when the time-reversal symmetry is broken, whereas the elastic contribution is present only when the structural symmetry of the swimmer is broken. The Purcell's scallop theorem breaks down for a three-sphere swimmer in a viscoelastic medium.

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Kento Yasuda, Ryuichi Okamoto, Shigeyuki Komura. 2017-01-05. Swimmer-microrheology. https://doi.org/10.7566/jpsj.86.043801

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