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Dynamic current-voltage characteristics of weakly conducting liquids in highly non-uniform electric fields

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This paper presents the results of computer simulation of the current flow through weakly conducting liquids at linearly-varying voltage. The simulation is carried out on the basis of a complete set of Electrohydrodynamic (EHD) equations. Two cases are considered: when a charge is formed in the bulk due to impurity molecule dissociation and when it is formed on the electrode surface due to the charge injection. The increase of the dissociation rate under the influence of an electric field is taken into account. The corresponding dynamic current-voltage characteristics are calculated and their specific features are revealed for every model of charge formation. It is shown that the hysteresis of the current-voltage characteristic is caused by the hysteresis of the electric field strength in the near-electrode area. The qualitative comparison of the simulation data and the experimental ones is carried out.

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Correspondence to Yu. K. Stishkov.

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Original Russian Text © Yu.K. Stishkov, V.A. Chirkov, A.A. Sitnikov, 2014, published in Elektronnaya Obrabotka Materialov, 2014, No. 2, pp. 35–40.

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Stishkov, Y.K., Chirkov, V.A. & Sitnikov, A.A. Dynamic current-voltage characteristics of weakly conducting liquids in highly non-uniform electric fields. Surf. Engin. Appl.Electrochem. 50, 135–140 (2014).

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