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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c02085
|2 doi
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|a pubmed24n1156.xml
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|a (DE-627)NLM347063209
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|a (NLM)36190842
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Li, Shuai
|e verfasserin
|4 aut
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|a Spontaneous Charging of Drops on Lubricant-Infused Surfaces
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|c 2022
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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
|b cr
|2 rdacarrier
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|a Date Revised 22.10.2022
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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 drop of a polar liquid slides over a hydrophobic surface, it acquires a charge. As a result, the surface charges oppositely. For applications such as the generation of electric energy, lubricant-infused surfaces (LIS) may be important because they show a low friction for drops. However, slide electrification on LIS has not been studied yet. Here, slide electrification on lubricant-infused surfaces was studied by measuring the charge generated by series of water drops sliding down inclined surfaces. As LIS, we used PDMS-coated glass with micrometer-thick silicone oil films on top. For PDMS-coated glass without lubricant, the charge for the first drop is highest. Then it decreases and saturates at a steady state charge per drop. With lubricant, the drop charge starts from 0, then it increases and reaches a maximum charge per drop. Afterward, it decreases again before reaching its steady-state value. This dependency is not a unique phenomenon for lubricant-infused PDMS; it also occurs on lubricant-infused micropillar surfaces. We attribute this dependency of charge on drop numbers to a change in surface conductivity and depletion of lubricant. These findings are helpful for understanding the charge process and optimizing solid-liquid nanogenerator devices in applications
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|a Journal Article
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|a Bista, Pravash
|e verfasserin
|4 aut
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|a Weber, Stefan A L
|e verfasserin
|4 aut
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|a Kappl, Michael
|e verfasserin
|4 aut
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|a Butt, Hans-Jürgen
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 41 vom: 18. Okt., Seite 12610-12616
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:38
|g year:2022
|g number:41
|g day:18
|g month:10
|g pages:12610-12616
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|u http://dx.doi.org/10.1021/acs.langmuir.2c02085
|3 Volltext
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|a GBV_ILN_721
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|a AR
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|d 38
|j 2022
|e 41
|b 18
|c 10
|h 12610-12616
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