Invariance of the solid-liquid interfacial energy in electrowetting probed via capillary condensation.
Langmuir
; 26(14): 11946-50, 2010 Jul 20.
Article
em En
| MEDLINE
| ID: mdl-20552998
ABSTRACT
Capillary condensation is employed to probe the solid-liquid interfacial energy in electrowetting on dielectric. The height of an annular water meniscus formed via capillary condensation inside the surface force apparatus is measured as a function of the potential applied across the meniscus and the dielectric stack where the meniscus is formed. According to the Kelvin equation, a decrease in the solid-liquid interfacial energy at constant temperature and relative humidity should lead to an increase in the meniscus height. Our experimental results on nanometer-sized meniscus are in agreement with the work of Mugele [J. Phys. Condens. Matter 2007, 19, 375112] and unequivocally demonstrate that the real contact angle (or the solid-liquid interfacial energy) remains unaltered in electrowetting on dielectric.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article