Electrowetting with electrolytes

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

doi:10.1103/PhysRevLett.97.136102

Electrowetting with electrolytes

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

^*Corresponding author for this work

School of Chemistry

Imperial College London

Research output: Contribution to journal › Article › peer-review

55 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 language	English
Article number	136102
Journal	Physical Review Letters
Volume	97
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.97.136102
State	Published - 2006

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10.1103/PhysRevLett.97.136102

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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.",

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AB - 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.

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Electrowetting with electrolytes

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