Magnetic Field

The novel magnetic field generator (Fig. 4) was developed by our group in collaboration with the Electrical Engineering College of Chongqing University [20, 21]. We used the 3D CAD image to show the magnet arrangement of the uniform magnetic field. The XOY plane distribution and 3D distribution of the magnetic field in the region of interest were displayed. The distribution of PEI-SPION-NPs in different magnetic fields was observed, and a non-uniform magnetic field (96-well Nd-Fe-B permanent plate) was used as a control.

The magnetic field generator and their magnetic field uniformity and PEI-SPIO-NPs distributed in the different magnetic field. a Measurement of magnetic field uniformity by Graussmeter. b Uniform magnetic field generator. c 3D image of magnet arrangement of uniform magnetic field generator (where each magnet has a size of 40 × 40 × 200 mm³). d 96-well magnetic field generator. e Magnetic field uniformity of 96-well magnetic field generator. f Magnetic field uniformity of uniform magnetic field generator. g Distribution of PEI-SPIO-NPs in 96-well magnetic field. h Distribution of PEI-SPIO-NPs in uniform magnetic field. i The XOY plane distribution of uniform magnetic field (50 mm × 50 mm) and j 3D distribution of uniform magnetic field