ELECTRIC-FIELD-INDUCED PATTERN-FORMATION IN INTERFACIAL METAL COLLOID FILMS

被引：2

作者：

AHARONIHAZAN, I ^{[1
]}

EFRIMA, S ^{[1
]}

DEUTSCH, M ^{[1
]}

RAPAPORT, DC ^{[1
]}

机构：

[1] BAR ILAN UNIV,DEPT PHYS,IL-52900 RAMAT GRN,ISRAEL

来源：

PHYSICA A | 1993年 / 200卷 / 1-4期

关键词：

D O I：

10.1016/0378-4371(93)90517-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：189 / 199

页数：11

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