4.7 Article

Superhydrophobic properties of silver-coated films on copper surface by galvanic exchange reaction

Journal

APPLIED SURFACE SCIENCE
Volume 254, Issue 8, Pages 2493-2498

Publisher

ELSEVIER
DOI: 10.1016/j.apsusc.2007.09.073

Keywords

superhydrophobicity; microstructure; electron microscopy; galvanic exchange reaction

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Hydrophobic properties of thin nanostructured silver films produced by galvanic exchange reaction on a copper surface were studied after passivation with stearic acid. The morphology of the silver films was controlled by varying the concentration of silver nitrate in the solution. Water contact angle as high as 1568 and contact angle hysteresis as low as 58 were achieved for samples obtained with initial silver ion concentration of 24.75 mM in the solution. However, a strong dependence of contact angle and contact angle hysteresis on the fractal-like morphology of the silver films was observed with the variation of silver ion concentration. (c) 2007 Elsevier B. V. All rights reserved.

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