Environmental scanning electron microscopy study of the fine structure of the triple line and cassie-wenzel wetting transition for sessile drops deposited on rough polymer substrates

The wetting of rough honeycomb micrometrically scaled polymer substrates was studied. A very strong dependence of the apparent contact angle on the drop volume has been established experimentally. The environmental scanning electron microscopy study of the fine structure of the triple line is report...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 23(2007), 8 vom: 10. Apr., Seite 4378-82
1. Verfasser: Bormashenko, Edward (VerfasserIn)
Weitere Verfasser: Bormashenko, Yelena, Stein, Tamir, Whyman, Gene, Pogreb, Roman, Barkay, Zahava
Format: Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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100 1 |a Bormashenko, Edward  |e verfasserin  |4 aut 
245 1 0 |a Environmental scanning electron microscopy study of the fine structure of the triple line and cassie-wenzel wetting transition for sessile drops deposited on rough polymer substrates 
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520 |a The wetting of rough honeycomb micrometrically scaled polymer substrates was studied. A very strong dependence of the apparent contact angle on the drop volume has been established experimentally. The environmental scanning electron microscopy study of the fine structure of the triple line is reported first. The triple line is not smooth and prefers grasping the polymer matrix over air holes. The precursor rim surrounding the drop has been observed. The revealed dependence of the apparent contact angle on the drop volume is explained by the transition between the pure Cassie and combined Wenzel-Cassie wetting regimes, which is induced by capillarity penetration of water into the holes of relief 
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700 1 |a Bormashenko, Yelena  |e verfasserin  |4 aut 
700 1 |a Stein, Tamir  |e verfasserin  |4 aut 
700 1 |a Whyman, Gene  |e verfasserin  |4 aut 
700 1 |a Pogreb, Roman  |e verfasserin  |4 aut 
700 1 |a Barkay, Zahava  |e verfasserin  |4 aut 
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