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
收藏
页码：189 / 199
页数：11
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