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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.6b02171
|2 doi
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|a eng
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|a Ghosal, Sandip
|e verfasserin
|4 aut
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|a Repulsion Between Finite Charged Plates with Strongly Overlapped Electric Double Layers
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|c 2016
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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 Completed 06.06.2018
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|a Date Revised 06.06.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Screened Coulomb interactions between uniformly charged flat plates are considered at very small plate separations for which the Debye layers are strongly overlapped, in the limit of small electrical potentials. If the plates are of infinite length, the disjoining pressure between the plates decays as an inverse power of the plate separation. If the plates are of finite length, we show that screening Debye layer charges close to the edge of the plates are no longer constrained to stay between the plates, but instead spill out into the surrounding electrolyte. The resulting change in the disjoining pressure is calculated analytically: the force between the plates is reduced by this edge correction when the charge density is uniform over the surface of the plates, and is increased when the surface is at constant potential. A similar change in disjoining pressure due to loss of lateral confinement of the Debye layer charges should occur whenever the sizes of the interacting charged objects become small enough to approach the Debye scale. We investigate the effect here in the context of a two-dimensional model problem that is sufficiently simple to yield analytical results
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|a Journal Article
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|a Sherwood, John D
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 32(2016), 37 vom: 20. Sept., Seite 9445-50
|w (DE-627)NLM098181009
|x 1520-5827
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|g volume:32
|g year:2016
|g number:37
|g day:20
|g month:09
|g pages:9445-50
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|u http://dx.doi.org/10.1021/acs.langmuir.6b02171
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