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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1021/la903051k
|2 doi
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|a eng
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|a de Beer, Sissi
|e verfasserin
|4 aut
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|a Instability of confined water films between elastic surfaces
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 28.05.2010
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|a Date Revised 23.02.2010
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a We investigated the dynamics of nanometer thin water films at controlled ambient humidity adsorbed onto two atomically smooth mica sheets upon rapidly bringing the surfaces into contact. Using a surface forces apparatus (SFA) in imaging mode, we found that the water films break up into a distribution of drops with a typical thickness of a few nanometers and a characteristic lateral size and spacing of several micrometers. Whereas the characteristic length is found to be independent of the ambient humidity, the characteristic time of the breakup decreases from approximately 1 to 0.01 s with increasing humidity. The existence of characteristic length and time scales shows that this breakup is controlled by an instability rather than a conventional nucleation and growth mechanism for SFA experiments. These findings cannot be explained by a dispersion-driven instability mechanism. In contrast, a model involving the elastic energies for the deformation of both the mica sheets and the underlying glue layer correctly reproduces the scaling of the characteristic length and time with humidity
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|a Journal Article
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|a 't Mannetje, Dieter
|e verfasserin
|4 aut
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|a Zantema, Sietske
|e verfasserin
|4 aut
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|a Mugele, Frieder
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 26(2010), 5 vom: 02. März, Seite 3280-5
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