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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c02707
|2 doi
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|a pubmed24n1057.xml
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|a DE-627
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|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Yu, Fanfei
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Surface-Charge-Assisted Microdroplet Generation on a Superhydrophobic Surface
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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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|a ƒa Online-Ressource
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|a Date Revised 01.12.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The ability to generate and manipulate droplets down to microscales has attracted great attention in a variety of applications, such as in printing, microreactors, and biological assays. However, the production of microdroplets is often limited by special equipment or the size of needles. Here, an unexplored and facile approach is demonstrated; microdroplets can be generated and trapped yet not pinned on a micro-nano-structured superhydrophobic surface by controllable surface charge during drop impact. Tiny droplets with a size at a scale of tens of microns to millimeters are generated by simply changing the impacting velocity, the size of the impact drop, or impact frequency. Theoretical analysis suggests the generation of the microdroplet as a result of the surface-charge-regulated adhesion, competing with liquid dynamic and interfacial energy. The distribution of surface charge which determines the size and the location of the microdroplet is at the top of the micro-nano-structured surface and dependent on the pressure field applied on the surface during the drop impact. The mobility of the resulting microdroplet that can be easily manipulated without liquid retention is also shown, by taking advantage of the shielding property of the surface charge. This facile yet effective method provides a promising candidate for the realization of tiny droplet-generating and -manipulating applications
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|a Journal Article
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1 |
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|a Sun, Qiangqiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Dehui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tan, Yao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lin, Shiji
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Longquan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fan, Yue
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guo, Junchang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Jinlong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Deng, Xu
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 36(2020), 47 vom: 01. Dez., Seite 14352-14360
|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:47
|g day:01
|g month:12
|g pages:14352-14360
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| 856 |
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|u http://dx.doi.org/10.1021/acs.langmuir.0c02707
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