Bonded permanent magnets are key components in many energy conversion, sensor and actuator devices. These applications require high magnetic performance freedom of shape. With additive manufacturing processes, for example laser powder bed fusion (LPBF), it is possible to produce bonded with customized stray field distribution. Up now, most studies use spherical powders as fillers due their good...

Effects of post-sintering annealing treatment between 300 and 1000ºC for up to 8 hrs time periods followed by either furnace cooling (FC) or air-cooling (AC) on the hard magnetic properties of some Nd-Fe-B based sintered magnets was investigated. It was shown that the intrinsic coercivity (Hci), second quadrant demagnetization loop shape and thus the energy density (BH)max varied considerably a...

This paper proposes a new induction heating (IH) coil using Halbach-arranged coils for cooktop. In general, control inverter is placed on the back side of coil, but by Halbach array coils, magnetic flux leakage to can be prevented without ferrite cores shielding. Further, concentratedly linked pot. First, differences and advantages distribution between conventional IH-coil proposed will describ...

Based on the form-invariant of Maxwell's equations under coordinate transformations, we extend the theory of transformation optics to transformation magneto-statics, which can design magnets through coordinate transformations. Some novel DC magnetic field illusions created by magnets (e.g. rescaling magnets, cancelling magnets and overlapping magnets) are designed and verified by numerical simu...

It has been shown in previous studies that gene delivery can be enhanced by a variety of minimally-invasive techniques including: (1) exposure of cells to ultrasound in the presence of DNA and gas microbubbles and (2) exposure of cells to a magnetic field in the presence of DNA conjugated to magnetic nanoparticles. The aim of this work was to investigate whether it was possible to combine the a...

This work investigates the performance of an electromagnetic vibration harvester for two-dimensional vibrations with variable magnetic stiffness and damping. The device consists a free-to-move cylindrical structure set bearings located on top bottom, couple coils bottom finally fixed system disk-shaped magnets placed inside ring holder. number in holder can be varied to change system. is charac...