Universal optimal geometry of minimal phoretic pumps
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Peer-reviewed
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Type
Article
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Authors
Michelin, Sébastien https://orcid.org/0000-0002-9037-7498
Lauga, Eric https://orcid.org/0000-0002-8916-2545
Abstract
Abstract: 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.
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Keywords
Article, /639/766/189, /639/166/898, article
Journal Title
Scientific Reports
Conference Name
Journal ISSN
2045-2322
Volume Title
9
Publisher
Nature Publishing Group UK