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Electrical Conductivity of Field-Structured Emulsions

Department of General and Theoretical Physics, North Caucasus Federal University, 1 Pushkin Street, 355017 Stavropol, Russia
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Fluids 2020, 5(2), 74; https://doi.org/10.3390/fluids5020074
Received: 22 April 2020 / Revised: 13 May 2020 / Accepted: 15 May 2020 / Published: 16 May 2020
(This article belongs to the Special Issue Classical and Modern Topics in Fluid Dynamics and Transport Phenomena)
The structure formation influence on various macroscopic properties of fluid–fluid disperse systems is poorly investigated. The present work deals with the experimental study of the charge transfer in emulsions whose dispersed phase droplets are arranged into chainlike structures under the action of an external force field. The emulsions studied are the fluid system in which water droplets are dispersed in a hydrocarbon-based magnetic fluid. Under the effect of an external uniform magnetic field, anisotropic aggregates form from the emulsion dispersed phase drops. The low-frequency electrical conductivity of emulsions has been measured. It is demonstrated that the emulsions’ conductivity grows several times under the effect of magnetic field parallel to the measuring electrical field. The anisotropic character of the emulsion electrical conductivity in the presence of magnetic field has been demonstrated. It is revealed that the maximal response of conductivity on the magnetic field action takes place at the dispersed phase volume fraction of about 20%. The dynamics of the conductivity variation is analyzed in dependence on the magnetic field strength and the dispersed phase volume fraction. The obtained results may be of interest in the development of potential applications of disperse systems with magnetic-field-controllable properties. View Full-Text
Keywords: emulsion; structure formation; electrical conductivity; magnetic fluid; chain-like aggregates; magnetic field emulsion; structure formation; electrical conductivity; magnetic fluid; chain-like aggregates; magnetic field
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MDPI and ACS Style

Zakinyan, A.R.; Kulgina, L.M.; Zakinyan, A.A.; Turkin, S.D. Electrical Conductivity of Field-Structured Emulsions. Fluids 2020, 5, 74. https://doi.org/10.3390/fluids5020074

AMA Style

Zakinyan AR, Kulgina LM, Zakinyan AA, Turkin SD. Electrical Conductivity of Field-Structured Emulsions. Fluids. 2020; 5(2):74. https://doi.org/10.3390/fluids5020074

Chicago/Turabian Style

Zakinyan, Arthur R.; Kulgina, Ludmila M.; Zakinyan, Anastasia A.; Turkin, Sergey D. 2020. "Electrical Conductivity of Field-Structured Emulsions" Fluids 5, no. 2: 74. https://doi.org/10.3390/fluids5020074

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