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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c02147
|2 doi
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|a pubmed24n1048.xml
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|a eng
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| 100 |
1 |
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|a Garcia-Gonzalez, Diana
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Onset of Elasto-capillary Bundling of Micropillar Arrays
|b A Direct Visualization
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| 264 |
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|c 2020
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 28.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a When a liquid drop gets into contact with a soft array of microstructures, capillary forces at the three-phase contact line can lead to critical deformations. Microstructures may collapse and form bundles or even patterns. So far, viewing the kinetics of bundling at the menisci scale has remained elusive. Here, we use laser scanning confocal microscopy to directly image the menisci between micropillars. We image structural changes in polydimethylsiloxane micropillar arrays during the Cassie-to-Wenzel transitions of a water drop evaporating on top of the array. We demonstrate how the regular pillar array undergoes a spontaneous symmetry breaking as the first step to the formation of pillar bundles. A comparison of the Cassie-to-Wenzel transition in air and FC40 indicates that the local contact angle determines the outcome of the bundling process. Based on these observations, we develop a simple model using the local contact angle, stiffness of the pillars, and interfacial tension of the liquid to predict the onset of the symmetry breaking
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| 650 |
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|a Journal Article
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1 |
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|a Snoeijer, Jacco
|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 Butt, Hans-Jürgen
|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 36(2020), 39 vom: 06. Okt., Seite 11581-11588
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:36
|g year:2020
|g number:39
|g day:06
|g month:10
|g pages:11581-11588
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|u http://dx.doi.org/10.1021/acs.langmuir.0c02147
|3 Volltext
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|d 36
|j 2020
|e 39
|b 06
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|h 11581-11588
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