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Autophoretic flow on a torus

dc.creatorSchmieding, LC
dc.creatorLauga, Eric Jean-Marie
dc.creatorMontenegro-Johnson, TD
dc.date.accessioned2017-02-01
dc.date.accessioned2018-11-24T23:19:45Z
dc.date.available2017-04-26T16:36:07Z
dc.date.available2018-11-24T23:19:45Z
dc.date.issued2017-03-02
dc.identifierhttps://www.repository.cam.ac.uk/handle/1810/263829
dc.identifier.urihttp://repository.aust.edu.ng/xmlui/handle/123456789/3509
dc.description.abstractPhoretic swimmers provide new avenues to study nonequilibrium statistical physics and are also hailed as a promising technology for bioengineering at the cellular scale. Exact solutions for the locomotion of such swimmers have been restricted so far to spheroidal shapes. In this paper we solve for the flow induced by the canonical nonsimply connected shape, namely an axisymmetric phoretic torus. The analytical solution takes the form of an infinite series solution, which we validate against boundary element computations. For a torus of uniform chemical activity, confinement effects in the hole allow the torus to act as a pump, which we optimize subject to fixed particle surface area. Under the same constraint, we next characterize the fastest swimming Janus torus for a variety of assumptions on the surface chemistry. Perhaps surprisingly, none of the optimal tori occur in the limit where the central hole vanishes.
dc.languageen
dc.publisherAmerican Physical Society
dc.publisherPhysical Review Fluids
dc.titleAutophoretic flow on a torus
dc.typeArticle


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