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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c01667
|2 doi
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|a pubmed24n1203.xml
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|a eng
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|a Samanta, Susmita
|e verfasserin
|4 aut
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|a Diffusiophoresis of Weakly Charged Fluid Droplets in a General Electrolyte Solution
|b An Analytical Theory
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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 05.09.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Owing to the importance of analytical results for electrokinetics of colloidal entities, we performed a mathematical analysis to determine the closed form analytical results for the diffusiophoretic velocity of a hydrophobic and polarizable fluid droplet. A comprehensive mathematical model is developed for diffusiophoresis, considering the background aqueous medium as general electrolytes (e.g., binary valence-symmetric/asymmetric electrolytes and a mixed solution of binary electrolytes). We performed our analysis under a weak concentration gradient, and the analytical results for diffusiophoretic velocity are calculated within the Debye-Hückel electrostatic framework. The exact form of the diffusiophoretic velocity is further approximated with negligible error, and the approximate form is found to be free from any of the cumbersome exponential integrals and thus very convenient for practical use. The present theory also covers the diffusiophoresis of perfectly dielectric as well as perfectly conducting droplets as its limiting case. In addition, we have further derived a number of closed form expressions for diffusiophoretic velocity pertaining to several particular cases, and we observed that the derived limit correctly recovers the available existing analytical results for diffusiophoretic velocity. Thus, the present analytical theory for diffusiophoresis can be applied to a wide class of fluidic droplets, e.g., hydrophobic and dielectric oil/conducting mercury droplets, air bubbles, nanoemulsions, as well as any polarizable and hydrophobic fluidic droplet suspended in a solution of general electrolytes
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|a Journal Article
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|a Mahapatra, Paramita
|e verfasserin
|4 aut
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|a Ohshima, H
|e verfasserin
|4 aut
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|a Gopmandal, Partha P
|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), 35 vom: 05. Sept., Seite 12452-12466
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:39
|g year:2023
|g number:35
|g day:05
|g month:09
|g pages:12452-12466
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|u http://dx.doi.org/10.1021/acs.langmuir.3c01667
|3 Volltext
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