Universal optimal geometry of minimal phoretic pumps
Nature Publishing Group UK
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Michelin, S., & Lauga, E. (2019). Universal optimal geometry of minimal phoretic pumps. Scientific Reports, 9 (1)https://doi.org/10.1038/s41598-019-46953-8
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.
Article, /639/766/189, /639/166/898, article
External DOI: https://doi.org/10.1038/s41598-019-46953-8
This record's URL: https://www.repository.cam.ac.uk/handle/1810/308365