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240229s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c03709
|2 doi
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|a DE-627
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|a eng
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| 100 |
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|a Eriksson, Mimmi
|e verfasserin
|4 aut
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| 245 |
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|a Effects of Gas Layer Thickness on Capillary Interactions at Superhydrophobic Surfaces
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 09.03.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Strongly attractive forces act between superhydrophobic surfaces across water due to the formation of a bridging gas capillary. Upon separation, the attraction can range up to tens of micrometers as the gas capillary grows, while gas molecules accumulate in the capillary. We argue that most of these molecules come from the pre-existing gaseous layer found at and within the superhydrophobic coating. In this study, we investigate how the capillary size and the resulting capillary forces are affected by the thickness of the gaseous layer. To this end, we prepared superhydrophobic coatings with different thicknesses by utilizing different numbers of coating cycles of a liquid flame spraying technique. Laser scanning confocal microscopy confirmed an increase in gas layer thickness with an increasing number of coating cycles. Force measurements between such coatings and a hydrophobic colloidal probe revealed attractive forces caused by bridging gas capillaries, and both the capillary size and the range of attraction increased with increasing thickness of the pre-existing gas layer. Hence, our data suggest that the amount of available gas at and in the superhydrophobic coating determines the force range and capillary growth
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|a Journal Article
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|a Claesson, Per M
|e verfasserin
|4 aut
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1 |
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|a Järn, Mikael
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wallqvist, Viveca
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tuominen, Mikko
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kappl, Michael
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Teisala, Hannu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Vollmer, Doris
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Schoelkopf, Joachim
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gane, Patrick A C
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mäkelä, Jyrki M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Swerin, Agne
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 40(2024), 9 vom: 05. März, Seite 4801-4810
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:40
|g year:2024
|g number:9
|g day:05
|g month:03
|g pages:4801-4810
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|u http://dx.doi.org/10.1021/acs.langmuir.3c03709
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