Electric field induced pattern formation in interfacial metal colloid films

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

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)189-199
Number of pages11
JournalPhysica A: Statistical Mechanics and its Applications
Issue number1-4
StatePublished - 15 Nov 1993

Bibliographical note

Funding Information:
The assistanceo f Gila Zipori in the calculations,Y ehiel Hubara in the experimental work, stimulating discussionsw ith Shlomo Havlin, and the cooperationo f Micha Pollak in the Auger studiesa re gratefullya cknowledged. This work was partially supported by the US-Israel Binational Science Foundation, Jerusalem.


Dive into the research topics of 'Electric field induced pattern formation in interfacial metal colloid films'. Together they form a unique fingerprint.

Cite this