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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c01702
|2 doi
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|a pubmed24n1153.xml
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|a DE-627
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|a eng
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|a Mahapatra, Paramita
|e verfasserin
|4 aut
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|a Electrophoresis of Dielectric and Hydrophobic Spherical Fluid Droplets Possessing Uniform Surface Charge Density
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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
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|a Date Revised 20.09.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The present article deals with the theoretical study on electrophoresis of hydrophobic and dielectric spherical fluid droplets possessing uniform surface charge density. Unlike the ideally polarizable liquid droplet bearing constant surface ζ-potential, the tangential component of the Maxwell stress is nonzero for dielectric fluid droplets with uniform surface charge density. We consider the continuity of the tangential component of total stress (sum of the hydrodynamic and Maxwell stresses) and jump in dielectric displacement along the droplet-to-electrolyte interface. The typical situation is considered here for which the interfacial tension of the fluid droplet is sufficiently high so that the droplet retains its spherical shape during its motion. The present theory can be applied to nanoemulsions, hydrophobic oil droplets, gas bubbles, droplets of immiscible liquid suspended in aqueous medium, etc. Based on weak field and low charge assumptions and neglecting the Marangoni effect, the resultant electrokinetic equations are solved using linear perturbation analysis to derive the closed form expression for electrophoretic mobility applicable for the entire range of Debye-Hückel parameter. We further deduced an alternate approximate expression for electrophoretic mobility without involving exponential integrals. Besides, we have derived analytical results for mobility pertaining to various limiting cases. The results are further illustrated to show the impact of pertinent parameters on the overall electrophoretic mobility
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|a Journal Article
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|a Ohshima, H
|e verfasserin
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|a Gopmandal, Partha P
|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), 37 vom: 20. Sept., Seite 11421-11431
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|x 1520-5827
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|g volume:38
|g year:2022
|g number:37
|g day:20
|g month:09
|g pages:11421-11431
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|u http://dx.doi.org/10.1021/acs.langmuir.2c01702
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