微尺度化学
润湿
电压
接触角
润湿转变
材料科学
化学物理
工作(物理)
纳米技术
光电子学
化学
物理
热力学
复合材料
数学教育
量子力学
数学
作者
Abhinav Ahuja,J. Ashley Taylor,Victor A. Lifton,Alexander Sidorenko,Todd Salamon,E.J. Lobaton,Paul Kolodner,Tom N. Krupenkin
出处
期刊:Langmuir
[American Chemical Society]
日期:2007-10-12
卷期号:24 (1): 9-14
被引量:323
摘要
In this work, dynamically tunable, superlyophobic surfaces capable of undergoing a transition from profound superlyophobic behavior to almost complete wetting have been demonstrated for the first time. In the initial state, with no voltage applied, these surfaces exhibit contact angles as high as 150 degrees for a wide variety of liquids with surface tensions ranging from 21.8 mN/m (ethanol) to 72.0 mN/m (water). Upon application of an electrical voltage, a transition from the superlyophobic state to wetting is observed. We have examined experimentally and theoretically the nature of these transitions. The reported results provide novel methods of manipulating liquids on the microscale.
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