An electromagnet 4 applies a magnetic field to the element, and the resistance of the element is varied by varying the strength of that field, the element only being conductive in the presence of the field. Alt
Magnetic Field Sensors Magnetic field sensors are devices that detect and measure magnetic fields around permanent magnets, current conductors, and electrical devices. As the world becomes increasingly electrified, demand for improved positional and current sensing has grown in turn. ADI MagIC+™ break...
A thin, smart, non-linear metamaterial is presented that enhances the imaging performance and increases the signal-to-noise ratio in 3T MRI significantly (up to eightfold), whilst the transmit field is not affected due to self-detuning and, thus, patient safety is also assured. This self-...
Figure 1c shows the evolution of the junction resistance measured as a function of the vertically injected dc current. Positive currents correspond to an electron flow from the synthetic anti-ferromagnet to the free layer. The measurement is performed in the presence of an external field Hz =...
In the presence of this field gradient, the Larmor relationship ensures that there will be smooth linear dependence of the MRI signal frequency along the inferior–superior axis. Therefore, it is possible to know where along the superior–inferior axis a particular signal-generating volume element ...
An electromagnetic field is produced by a space- and time-dependent charge and current distribution in some region of space acting as the source of the field. From: Basic Optics, 2016 About this pageSet alert Discover other topics On this page Definition Chapters and Articles Related Terms Recom...
Bind—Dynabeads magnetic beads bind to the desired target (e.g., cells, microorganisms, nucleic acids, peptides, proteins, protein complexes, etc.). In the example shown (Figure 1), an antibody is attached to the surface of the magnetic bead. Wash—The beads respond to a magnetic field,...
This boundary condition also means that the magnetic field is zero in the normal direction to the boundary. That is, the magnetic field must be tangential to this boundary. As a consequence, this boundary condition has the physical interpretation of a boundary through which current can only flow...
Brushless direct current (BLDC) motors You parameterize the block by using tabulated data of the motor magnetic flux as a function of current and rotor angle. This is the way that finite element method (FEM) packages usually export flux information. Because the block uses tabulated data, the ...
Brushless direct current (BLDC) motors You parameterize the block by using tabulated data of the motor magnetic flux as a function of current and rotor angle. This is the way that finite element method (FEM) packages usually export flux information. Because the block uses tabulated data, the ...