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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c02390
|2 doi
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|a eng
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| 100 |
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|a Fawole, Esohe
|e verfasserin
|4 aut
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|a High-Voltage Electrodes in Moist Air Accumulate Charge That is Retained after Removing the Electric Field
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|c 2023
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|a Text
|b txt
|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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|a Date Revised 16.12.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Applying a high voltage to a metal electrode that is disconnected from a circuit rapidly induces a capacitive charge, which quickly relaxes after removal of the applied voltage. Here, we report that if the electrode is placed in air at a sufficiently high relative humidity and provided the connection between the high-voltage supply and the electrode is composed of two different metals, the expected capacitive charge is followed by a gradual increase in charge. Surprisingly, this extra charge persists after the removal of the applied voltage and even after physically removing the electrode from the Faraday cup used to measure the charge. We report the median charge, average charge rate, and residual charge for different applied voltages, different metal-metal connections, and varied humidity. We interpret the results in terms of a proposed water ionization mechanism and discuss the implications of the findings for high-voltage fluidic systems
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|a Journal Article
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|a Ristenpart, William D
|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 39(2023), 49 vom: 12. Dez., Seite 17745-17755
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|x 1520-5827
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|g volume:39
|g year:2023
|g number:49
|g day:12
|g month:12
|g pages:17745-17755
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|u http://dx.doi.org/10.1021/acs.langmuir.3c02390
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