Elastic three-sphere microswimmer in a viscous fluid

Kento Yasuda, Yuto Hosaka, Mizuki Kuroda, Ryuichi Okamoto, Shigeyuki Komura

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We discuss the dynamics of a generalized three-sphere microswimmer in which the spheres are connected by two elastic springs. The natural length of each spring is assumed to undergo a prescribed cyclic change. We analytically obtain the average swimming velocity as a function of the frequency of cyclic change in the natural length. In the low-frequency region, the swimming velocity increases with frequency, and its expression reduces to that of the original three-sphere model by Najafi and Golestanian. Conversely, in the high-frequency region, the average velocity decreases with increasing frequency. Such behavior originates from the intrinsic spring relaxation dynamics of an elastic swimmer moving in a viscous fluid.

Original languageEnglish
Article number093801
JournalJournal of the Physical Society of Japan
Volume86
Issue number9
DOIs
Publication statusPublished - Sep 15 2017
Externally publishedYes

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viscous fluids
springs (elastic)
low frequencies

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Elastic three-sphere microswimmer in a viscous fluid. / Yasuda, Kento; Hosaka, Yuto; Kuroda, Mizuki; Okamoto, Ryuichi; Komura, Shigeyuki.

In: Journal of the Physical Society of Japan, Vol. 86, No. 9, 093801, 15.09.2017.

Research output: Contribution to journalArticle

Yasuda, Kento ; Hosaka, Yuto ; Kuroda, Mizuki ; Okamoto, Ryuichi ; Komura, Shigeyuki. / Elastic three-sphere microswimmer in a viscous fluid. In: Journal of the Physical Society of Japan. 2017 ; Vol. 86, No. 9.
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