In this work, we present a measurement system based on the thin layer of magnetic fluid aimed at scanning either the non-uniform magnetic field distribution applicable for magnetic levitation systems (MagLev) or determining small excess gas pressure. The key idea is based on the photo registration of a transparent air-filled cavity formed in a thin magnetic fluid layer due to balancing the gas pressure and the pressure emerging due to magnetic forces. As a result, the contour of the magnetic field lines in 3D space is visible. It is shown that the theoretical analysis and numerical simulations are consistent with experimental results.
538.951Results of investigations into the dispersed composition of a magnetic fluid based on the measured dependence of the amplitude of the acousto-magnetic effect on the magnetic field strength are considered. The results obtained are compared with the data of atomic force microscopy and magneto-granulometric analysis.
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