Percolation transitions in composites formed by the evaporation of droplets of silver nanoparticle dispersions

被引：0
|
作者：
V. V. Vysotskii
V. I. Roldughin
O. Ya. Uryupina
A. V. Zaitseva
机构：
[1] Russian Academy of Sciences,Frumkin Institute of Physical Chemistry and Electrochemistry
[2] OOO Inlaif,undefined
来源：
Colloid Journal | 2011年 / 73卷
关键词：
Tannin; Percolation Threshold; Colloid Journal; Voltage Current Characteristic; Droplet Evaporation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Conducting properties are studied for deposits that result from evaporating droplets of dispersions of silver nanoparticles with average diameters of 6.2 and 11.9 nm. The deposits represent two ring-shaped structures with diameters of several dozen and several hundred micrometers, which are formed along the perimeter of an evaporating droplet. It is shown that only the external ring-shaped deposit is an electric conductor. The dependence of its conductivity on the content of metal precursor (AgNO3) in a solution used to synthesize nanoparticles appears to be similar to a percolation transition. Mechanisms of charge transfer in the examined ring-shaped deposit are discussed assuming that it represents a metal-polymer composite.
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