There are mainly two forces acting on the MNP of the ferrofluid under magnetic field: (1) the magnetic force, [[??].sub.m], which is generated by the applied magnetic field gradient
, and (2) the fluidic force, [[??].sub.s], which is exerted by the suspending medium on a moving MNP.
Caption: Figure 12: Evolution law of magnetic field gradient
on surface of welded structure.
It was reported that strength of used magnets and magnetic field gradient
varies from 70 mT to 2.2 T and from 0.03 T/m to 100 T/m, respectively [3, 9, 12, 18].
Material with an electric field gradient
of 41 MV/m
Impact of magnetic field gradients
on the free corrosion of iron.
Gravity field gradient
along a levelling profile has a significant effect on the levelling results.
Axial gradient of the magnetic field gradient
(dB/dL) at the wall of the channel, which caused oxygen transfer towards the pellet surface was equal to 1.56 T/m, but it was not higher than 0.8 T/m in the central part of the flame.
Note that this passive compressor can enhance both background DC magnetic field and field gradient
. Thus (B x [nabla])B can be amplified, which means the magnetic force will be greatly enhanced passively.
z-direction, the field gradient
at the boundary and the associated
To perform the spectroscopy of the bouncing neutron, the interaction that couples different quantum states can be a vibration of the bottom mirror or an oscillating magnetic field gradient
In this modeling study, it is assumed that a single RF transmit coil (with a [B.sup.+.sub.1] field gradient
) is rotating about the sample at the angular frequency [[omega].sub.rot], while the MR signal acquisition is performed with a dedicated receive RF body coil that has a uniform [B.sup.-.sub.1].
There will be a force drawing the steel sphere into the centre of the gap, since there exists a magnetic field gradient
in every direction away from this center-point.