Finding the effective structure parameters for suspensions of nano-sized insulating particles from low-frequency impedance measurements

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dc.contributor.authorSushko, Miroslav Ya.
dc.contributor.authorHotsulskyi, Volodymyr Ya.
dc.contributor.authorStiranets, M. V.
dc.date.accessioned2017-10-20T06:46:00Z
dc.date.available2017-10-20T06:46:00Z
dc.date.issued2016
dc.description.abstractBased on the method of compact groups of inhomogeneities, we formulate new mixing rules for suspensions of charged insulating particles. They express the quasistatic conductivity and permittivity of a suspension in terms of the effective geometric and dielectric parameters of the particles, electric double layers (EDLs), and suspending liquid. Also, we present our low-frequency impedance measurements of the conductivity and permittivity of Al2O3-isopropyl alcohol nanofluids as functions of Al2O3-particle volume concentration. Our rules give good fits for most of these data and allow us to estimate, among other things, the effective thickness, conductivity, and permittivity of the EDLs. The experimentally-recovered values agree well with elementary theoretical estimates suggesting the charging of the particles through preferential adsorption of contaminant ions. The possible effects of other mechanisms on the effective conductivity and permittivity of suspensions are also discussed.uk
dc.identifier.citationJournal of Molecular Liquidsuk
dc.identifier.urihttps://dspace.onu.edu.ua/handle/123456789/11109
dc.language.isoenuk
dc.relation.ispartofseries;№ 222
dc.subjectElectrical conductivityuk
dc.subjectPermittivityuk
dc.subjectSuspensionuk
dc.subjectNanofluiduk
dc.subjectElectric double layeruk
dc.subjectCompact group methoduk
dc.subjectImpedance spectroscopyuk
dc.titleFinding the effective structure parameters for suspensions of nano-sized insulating particles from low-frequency impedance measurementsuk
dc.typeArticleuk
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