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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c00941
|2 doi
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|a pubmed24n1134.xml
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|a (DE-627)NLM340290560
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|a (NLM)35500291
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Wong, William S Y
|e verfasserin
|4 aut
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| 245 |
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|a Tuning the Charge of Sliding Water Drops
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|c 2022
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 16.07.2022
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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 water drop slides over a hydrophobic surface, it usually acquires a positive charge and deposits the negative countercharge on the surface. Although the electrification of solid surfaces induced after contact with a liquid is intensively studied, the actual mechanisms of charge separation, so-termed slide electrification, are still unclear. Here, slide electrification is studied by measuring the charge of a series of water drops sliding down inclined glass plates. The glass was coated with hydrophobic (hydrocarbon/fluorocarbon) and amine-terminated silanes. On hydrophobic surfaces, drops charge positively while the surfaces charge negatively. Hydrophobic surfaces coated with a mono-amine (3-aminopropyltriethyoxysilane) lead to negatively charged drops and positively charged surfaces. When coated with a multiamine (N-(3-trimethoxysilylpropyl)diethylenetriamine), a gradual transition from positively to negatively charged drops is observed. We attribute this tunable drop charging to surface-directed ion transfer. Some of the protons accepted by the amine-functionalized surfaces (-NH2 with H+ acceptor) remain on the surface even after drop departure. These findings demonstrate the facile tunability of surface-controlled slide electrification
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|a Journal Article
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1 |
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|a Bista, Pravash
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Xiaomei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Veith, Lothar
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sharifi-Aghili, Azadeh
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Weber, Stefan A L
|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 38(2022), 19 vom: 17. Mai, Seite 6224-6230
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:38
|g year:2022
|g number:19
|g day:17
|g month:05
|g pages:6224-6230
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| 856 |
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|u http://dx.doi.org/10.1021/acs.langmuir.2c00941
|3 Volltext
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