Peculiarities of Formation of Magnetic Emulsion Drops in an Alternating Electric Field

Abstract

The features of deformation of microdrops of magnetic emulsions in an alternating electric field are experimentally investigated. It is shown that the nature of deformation can vary depending on the frequency of an electric field. In the case of low frequencies of an electric field, the droplets flatten along its direction, at higher frequencies they take an elongated shape. It was established that the frequency value corresponding to the transition of the microdroplet shape from the flattened to the elongated state depends on the electrical con-ductivity of the droplet, the value of the electric field strength, and temperature. A possibil-ity of compensating for the deformation of the droplet caused by the action of an electric field using an additionally applied magnetic field was shown. The analysis of the obtained results was carried out taking into account the movement of liquid phases caused by the ac-cumulation of a free charge at the interphase boundaries of droplets and electrodes that cre-ate a field.