Universal optimal geometry of minimal phoretic pumps

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...

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Autores principales: Michelin, Sébastien, Lauga, Eric
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6658517/
https://www.ncbi.nlm.nih.gov/pubmed/31346194
http://dx.doi.org/10.1038/s41598-019-46953-8
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author Michelin, Sébastien
Lauga, Eric
author_facet Michelin, Sébastien
Lauga, Eric
author_sort Michelin, Sébastien
collection PubMed
description 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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spelling pubmed-66585172019-07-31 Universal optimal geometry of minimal phoretic pumps Michelin, Sébastien Lauga, Eric Sci Rep Article 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. Nature Publishing Group UK 2019-07-25 /pmc/articles/PMC6658517/ /pubmed/31346194 http://dx.doi.org/10.1038/s41598-019-46953-8 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Michelin, Sébastien
Lauga, Eric
Universal optimal geometry of minimal phoretic pumps
title Universal optimal geometry of minimal phoretic pumps
title_full Universal optimal geometry of minimal phoretic pumps
title_fullStr Universal optimal geometry of minimal phoretic pumps
title_full_unstemmed Universal optimal geometry of minimal phoretic pumps
title_short Universal optimal geometry of minimal phoretic pumps
title_sort universal optimal geometry of minimal phoretic pumps
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6658517/
https://www.ncbi.nlm.nih.gov/pubmed/31346194
http://dx.doi.org/10.1038/s41598-019-46953-8
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