Effect of magnetic field on electroconvection in a thin layer of magnetic nanofluid

The Influence of Magnetic Fields on Electrophoretic Processes in Magnetic Colloids with Different Stabilization Mechanisms

“…It should be noted that the dependencies shown in Figure 15 are in conflict with similar dependencies given in ref. [47]. It turned out that their agreement in the studied range of magnetic field As can be seen from Figure 15, when the temperature reached 50-60 • C, the threshold value of the electric field strength corresponding to the appearance of a labyrinth structure practically ceased to depend on the additional effect of the magnetic field.…”

“…It should be noted that the dependencies shown in Figure 15 are in conflict with similar dependencies given in ref. [47]. It turned out that their agreement in the studied range of magnetic field strengths is observed only with an increase in the thickness of the studied sample layer above 35 µm.…”

“…Thus, an increase in temperature led to an elongation of the labyrinth stripes, as can be seen in Figure 13 and ESI Videos S2-S4. As mentioned above, the formation of such a structure has been observed in several works [45][46][47], while the mechanism for the formation of highly concentrated labyrinth-type regions remains unclear to date. It is known from the literature that such structures appear when a certain threshold value of the electric field strength is reached, which depends on the conductivity of the medium.…”

“…Another problem in electrophoretic studies of magnetic fluids originates from structural and phase transitions that occur in the presence of electric fields [45][46][47]. It was demonstrated that under a constant electric field, magnetic fluids can form structured lattices or autowaves in thin layers [48,49].…”

Electric partial discharges in biodegradable oil-based ferrofluids: A study on effects of magnetic field and nanoparticle concentration

“…As structural and physical properties of ferrofluids are controllable by magnetic fields (e.g. effect on electroconvection [ 28 ] and magnetic nanoparticle assembly at ferrofluid/solid interface [ 29 ]), we also performed the measurements of the partial discharges under an influence of an external static magnetic field. This magnetic field was generated by attaching two permanent magnets (NdFeB) to the container wall, as illustrated in Fig.…”