Electric field induced pattern formation in interfacial metal colloid films

I. Aharoni-Hazan, S. Efrima, M. Deutsch and D.C. Rapaport

Physica A: Statistical Mechanics and its Applications, 1993, vol. 200, issue 1, 189-199

Abstract: First results on electric field induced aggregation in a novel colloidal film are presented. The aggregate appears as a dark structure on the shiny background of the metallic colloidal film that forms at the interface between two immiscible liquids. A variety of shapes are observed, ranging from compact circular, to highly ramified dendritic ones, depending on control parameters such as voltage and chemical composition. The aggregation process was investigated for a wide range of parameters by video photography and subsequent pattern analysis, as well as by Auger spectroscopic measurements of dried samples. A new type of mechanism—a combination of electroaggregation of the colloid particles and electrodeposition of metal ions—is proposed to account for the observations.

Date: 1993
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:200:y:1993:i:1:p:189-199

DOI: 10.1016/0378-4371(93)90517-8

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