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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.9b03032
|2 doi
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Liu, Ban-Yang
|e verfasserin
|4 aut
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| 245 |
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|a Directional Liquid Wicking in Regular Arrays of Triangular Posts
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| 264 |
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|c 2019
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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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|a ƒa Online-Ressource
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|a Date Revised 04.03.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Wicking of wetting liquids into micropatterns of posts with homogeneous triangular cross section is studied in experiments and by numerical energy minimizations. To test for directional wicking, we fabricated regular arrays of posts with various combinations of line fractions and aspect ratios using standard photolithography processes. In agreement with numerical energy minimizations of the liquid film morphology, we find spontaneous wicking in the experiments only for line fractions and aspect ratios where the homogeneous liquid film represents the state of lowest interfacial free energy and where no local energy minimum could be detected in our numerical energy minimizations. The numerical results further demonstrate that the stability of a certain morphology of the terminal meniscus controls the direction of wicking relative to the orientation of the triangular posts. The observed selectivity of spontaneous wicking with respect to the meniscus orientation can be exploited to build a microfluidic rectifier for partially wetting liquids
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|a Journal Article
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|a Seemann, Ralf
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Li-Jen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Brinkmann, Martin
|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 35(2019), 50 vom: 17. Dez., Seite 16476-16486
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|g volume:35
|g year:2019
|g number:50
|g day:17
|g month:12
|g pages:16476-16486
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|u http://dx.doi.org/10.1021/acs.langmuir.9b03032
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