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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.1c02647
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
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|a Chun, Jiang
|e verfasserin
|4 aut
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|a Microscopic Observation of Preferential Capillary Pumping in Hollow Nanowire Bundles
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|c 2022
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|a Text
|b txt
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 11.01.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Numerous studies have focused on designing micro/nanostructured surfaces to improve wicking capability for rapid liquid transport in many industrial applications. Although hierarchical surfaces have been demonstrated to enhance wicking capability, the underlying mechanism of liquid transport remains elusive. Here, we report the preferential capillary pumping on hollow hierarchical surfaces with internal nanostructures, which are different from the conventional solid hierarchical surfaces with external nanostructures. Specifically, capillary pumping preferentially occurs in the nanowire bundles instead of the interconnected V-groove on hollow hierarchical surfaces, observed by confocal laser scanning fluorescence microscopy. Theoretical analysis shows that capillary pumping capability is mainly dependent on the nanowire diameter and results in 15.5 times higher capillary climbing velocity in the nanowire bundles than that in the microscale V-groove. Driven by the Laplace pressure difference between nanowire bundles and V-grooves, the preferential capillary pumping is increased with the reduction of the nanowire diameter. Capillary pumping of the nanowire bundles provides a preferential path for rapid liquid flow, leading to 2 times higher wicking capability of the hollow hierarchical surface comparing with the conventional hierarchical surface. The unique mechanism of preferential capillary pumping revealed in this work paves the way for wicking enhancement and provides an insight into the design of wicking surfaces for high-performance capillary evaporation in a broad range of applications
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|a Journal Article
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|a Xu, Chen
|e verfasserin
|4 aut
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1 |
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|a Li, Qifan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Yansong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Qishan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Wei
|e verfasserin
|4 aut
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| 700 |
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|a Wen, Rongfu
|e verfasserin
|4 aut
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| 700 |
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|a Ma, Xuehu
|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 38(2022), 1 vom: 11. Jan., Seite 352-362
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:38
|g year:2022
|g number:1
|g day:11
|g month:01
|g pages:352-362
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|u http://dx.doi.org/10.1021/acs.langmuir.1c02647
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