Asymmetric wetting hysteresis on hydrophobic microstructured surfaces

The wetting behavior of hydrophobic, microstructured surfaces containing arrays of pillars or holes has been investigated. The size of the surface features was fixed (20 microm), while their separation was varied to adjust the area fraction (0-80%). The wettability of structured surfaces for liquids...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 25(2009), 10 vom: 19. Mai, Seite 5655-60
1. Verfasser: Priest, Craig (VerfasserIn)
Weitere Verfasser: Albrecht, Trent W J, Sedev, Rossen, Ralston, John
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2009
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a The wetting behavior of hydrophobic, microstructured surfaces containing arrays of pillars or holes has been investigated. The size of the surface features was fixed (20 microm), while their separation was varied to adjust the area fraction (0-80%). The wettability of structured surfaces for liquids resting in the Cassie state is strongly dependent on the continuity of the solid component. Microstructured square pillars and holes showed distinct, asymmetric wetting hysteresis, consistent with our previous observations on flat, chemically heterogeneous surfaces. Furthermore, clear trends for the magnitude of contact angle hysteresis versus area fraction for the two types of microstructured surfaces are evident. The pinning energy associated with these surface features is estimated 
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700 1 |a Sedev, Rossen  |e verfasserin  |4 aut 
700 1 |a Ralston, John  |e verfasserin  |4 aut 
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