Universal optimal geometry of minimal phoretic pumps

Sébastien Michelin; Eric Lauga

doi:10.1038/s41598-019-46953-8

Universal optimal geometry of minimal phoretic pumps

Sébastien Michelin
, Eric Lauga

University of Cambridge

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Unlike pressure-driven flows, surface-mediated phoretic flows provide efficient means to drive fluid motion on very small scales. Colloidal particles covered with chemically-active patches with nonzero phoretic mobility (e.g. Janus particles) swim using self-generated gradients, and similar physics can be exploited to create phoretic pumps. Here we analyse in detail the design principles of phoretic pumps and show that for a minimal phoretic pump, consisting of 3 distinct chemical patches, the optimal arrangement of the patches maximizing the flow rate is universal and independent of chemistry.

langue originale	Anglais
Numéro d'article	10788
Pages (de - à)	10788
Nombre de pages	1
journal	Scientific Reports
Volume	9
Numéro de publication	1
Les DOIs	https://doi.org/10.1038/s41598-019-46953-8
état	Publié - 25 juil. 2019

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Universal optimal geometry of minimal phoretic pumps

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