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Accueil du site > Seminars > Séminaires théorie > Theory Club Tuesday November 6 at 12pm in room 646A. Shigeyuki Komura: "A three-sphere microswimmer in a structured fluid".

Theory Club Tuesday November 6 at 12pm in room 646A. Shigeyuki Komura: "A three-sphere microswimmer in a structured fluid"

Unless otherwise stated, seminars and defences take place at 11:30 in room 454A of Condorcet building.


A three-sphere microswimmer in a structured fluid

Shigeyuki Komura

Abstract: We discuss the locomotion of a three-sphere microswimmer in a viscoelastic structured fluid characterized by typical length and time scales [1]. We derive a general expression to link the average swimming velocity to the sphere mobilities. In this relationship, a viscous contribution exists when the time-reversal symmetry is broken, whereas an elastic contribution is present when the structural symmetry of the microswimmer is broken. As an example of a structured fluid, we consider a polymer gel, which is described by a ``two-fluid" model. We demonstrate in detail that the competition between the swimmer size and the polymer mesh size gives rise to the rich dynamics of a three-sphere microswimmer.

[1] K. Yasuda, R. Okamoto, and S. Komura, EPL 123, 34002 (2018).

Tuesday November 6 at 12pm in room 646A


Contact : Équipe séminaires / Seminar team - Published on / Publié le 24 October


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