Fast electrically switchable capillary effects

Wim J.J. Welters, Lambertus G.J. Fokkink

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Abstract

Through the application of a potential between a water droplet on a hydrophobic coating and the underlying conductive substrate, we have shown control over the contact angle of the droplet. The same phenomenon can be used to control capillary rise of a liquid in a coated capillary over several centimeters in a short time. Interesting applications such as a temporary improvement of adhesion (drying of paint), electrical control of liquid lenses, and patternwise and dynamic filling of a capillary array are in sight.

Original languageEnglish
Pages (from-to)1535-1538
Number of pages4
JournalLangmuir
Volume14
Issue number7
Publication statusPublished - 31 Mar 1998
Externally publishedYes

Cite this

Welters, W. J. J., & Fokkink, L. G. J. (1998). Fast electrically switchable capillary effects. Langmuir, 14(7), 1535-1538.