Acoustic tracking of Cassie to Wenzel wetting transitions

Many applications involving superhydrophobic materials require accurate control and monitoring of wetting states and wetting transitions. Such monitoring is usually done by optical methods, which are neither versatile nor integrable. This letter presents an alternative approach based on acoustic mea...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 29(2013), 43 vom: 29. Okt., Seite 13129-34
1. Verfasser: Dufour, Renaud (VerfasserIn)
Weitere Verfasser: Saad, Nadine, Carlier, Julien, Campistron, Pierre, Nassar, George, Toubal, Malika, Boukherroub, Rabah, Senez, Vincent, Nongaillard, Bertrand, Thomy, Vincent
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a Many applications involving superhydrophobic materials require accurate control and monitoring of wetting states and wetting transitions. Such monitoring is usually done by optical methods, which are neither versatile nor integrable. This letter presents an alternative approach based on acoustic measurements. An acoustic transducer is integrated on the back side of a superhydrophobic silicon surface on which water droplets are deposited. By analyzing the reflection of longitudinal acoustic waves at the composite liquid-solid-vapor interface, we show that it is possible to track the local evolution of the Cassie-to-Wenzel wetting transition efficiently, as induced by evaporation or the electrowetting actuation of droplets 
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700 1 |a Saad, Nadine  |e verfasserin  |4 aut 
700 1 |a Carlier, Julien  |e verfasserin  |4 aut 
700 1 |a Campistron, Pierre  |e verfasserin  |4 aut 
700 1 |a Nassar, George  |e verfasserin  |4 aut 
700 1 |a Toubal, Malika  |e verfasserin  |4 aut 
700 1 |a Boukherroub, Rabah  |e verfasserin  |4 aut 
700 1 |a Senez, Vincent  |e verfasserin  |4 aut 
700 1 |a Nongaillard, Bertrand  |e verfasserin  |4 aut 
700 1 |a Thomy, Vincent  |e verfasserin  |4 aut 
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