Electrowetting with electrolytes

Charles W. Monroe*, Leonid I. Daikhin, Michael Urbakh, Alexei A. Kornyshev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

A theory of electrowetting is developed for systems containing an interface between two immiscible electrolytic solutions. Laws for the dependence of contact angle on electrode potential are presented. Ionic impermeability of the liquid-liquid interface and nonlinear double-layer responses rationalize observed phenomena such as contact-angle saturation and droplet contraction or detachment. The theoretical results can be applied to design new, precisely controllable microfluidic devices.

Original languageEnglish
Article number136102
JournalPhysical Review Letters
Volume97
Issue number13
DOIs
StatePublished - 2006

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