Young-Lippmann equation revisited for nano-suspensions

被引：36
|
作者：
Orejon, Daniel [1 ]
Sefiane, Khellil [1 ]
Shanahan, Martin E. R. [2 ,3 ,4 ]
机构：
[1] Univ Edinburgh, Inst Mat & Proc, Sch Engn, Edinburgh EH9 3JL, Midlothian, Scotland
[2] Univ Bordeaux, I2M, UMR 5295, F-33400 Talence, France
[3] CNRS, I2M, UMR 5295, F-33400 Talence, France
[4] Arts & Metiers ParisTech, I2M, UMR 5295, F-33400 Talence, France
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 20期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1063/1.4807120
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present the results of an experimental study investigating electrowetting effects in nano-suspension drops. Wetting of sessile drops of titanium oxide (TiO2) nano-particles dispersed in deionised water was studied under a DC voltage potential. The presence of nano-particles is found to further enhance spreading of drops when a DC potential is applied. Results are explained based on the change in interfacial energy induced by nano-particle adsorption at the solid-liquid interface. An amendment of the Young-Lippmann equation accounting for the presence of nano-particles is proposed. The electrowetting expression proposed is validated against the experimental data for substrates with various dielectric thicknesses. (C) 2013 AIP Publishing LLC.
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页数：3
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