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Autonomous colloidal crystallization in a galvanic microreactor

Author(s): Punckt, Christian; Jan, Linda; Jiang, Peng; Frewen, Thomas A.; Saville, Dudley A.; et al

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dc.contributor.authorPunckt, Christian-
dc.contributor.authorJan, Linda-
dc.contributor.authorJiang, Peng-
dc.contributor.authorFrewen, Thomas A.-
dc.contributor.authorSaville, Dudley A.-
dc.contributor.authorKevrekidis, Ioannis G.-
dc.contributor.authorAksay, Ilhan A.-
dc.date.accessioned2020-01-28T21:04:31Z-
dc.date.available2020-01-28T21:04:31Z-
dc.date.issued2012-10-03en_US
dc.identifier.citationPunckt, C, Jan, L, Jiang, P, Frewen, TA, Saville, DA, Kevrekidis, IG, Aksay, IA. (2012). Autonomous colloidal crystallization in a galvanic microreactor. Journal of Applied Physics, 112(7), doi:10.1063/1.4755807en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1nj40-
dc.description.abstractWe report on a technique that utilizes an array of galvanic microreactors to guide the assembly of two-dimensional colloidal crystals with spatial and orientational order. Our system is comprised of an array of copper and gold electrodes in a coplanar arrangement, immersed in a dilute hydrochloric acid solution in which colloidal micro-spheres of polystyrene and silica are suspended. Under optimized conditions, two-dimensional colloidal crystals form at the anodic copper with patterns and crystal orientation governed by the electrode geometry. After the aggregation process, the colloidal particles are cemented to the substrate by co-deposition of reaction products. As we vary the electrode geometry, the dissolution rate of the copper electrodes is altered. This way, we control the colloidal motion as well as the degree of reaction product formation. We show that particle motion is governed by a combination of electrokinetic effects acting directly on the colloidal particles and bulk electrolyte flow generated at the copper-gold interface.en_US
dc.format.extent074905-1 - 074905-9en_US
dc.language.isoen_USen_US
dc.relationhttps://doi.org/10.1063/1.2218832en_US
dc.relationhttps://doi.org/10.1063/1.2821833en_US
dc.relationhttps://doi.org/10.1063/1.3535977en_US
dc.relation.ispartofJournal of Applied Physicsen_US
dc.relation.ispartofseriesVol 112, Issue 7;-
dc.rightsFinal published version. Article is made available in OAR by the publisher's permission or policy.en_US
dc.titleAutonomous colloidal crystallization in a galvanic microreactoren_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1063/1.4755807-
dc.date.eissued2012-10en_US
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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