Universal optimal geometry of minimal phoretic pumps.
Published version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Michelin, Sébastien
Lauga, Eric Lauga https://orcid.org/0000-0002-8916-2545
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.
Description
Keywords
0306 Physical Chemistry (incl. Structural)
Journal Title
Scientific Reports
Conference Name
Journal ISSN
2045-2322
2045-2322
2045-2322
Volume Title
9
Publisher
Nature Publishing Group
Publisher DOI
Sponsorship
European Research Council (682754)
This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreements 714027 to S.M. and 682754 to E.L.).