Magnetic Particle Suppliers

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• Magnetic Sensing
  . Because eddy-current sensors do not depend on a time rate of change to register motion, their response does not diminish near zero speed like that of magnetic pickups. Eddy-current devices are seldom contaminated by dirt or metal particles, but sensing distance is typically limited to the diameter...
• MICRO: Controlling particles in sputter deposition modules
  of magnets (or a magnetron) behind the target generates a magnetic field that interacts with the electric field generated by the biased target and confines the electrons within the plasma, thereby ensuring that a high ion density is generated at the target surface even at a low chamber pressure (1 to 3 mTorr...
• Particle Characterization and Rheology links
  workers. Our close relationship with Malvern has resulted in the setting up of the new Malvern Room which provides facilities for laser particle sizing, color spectrometry and the determination of magnetic properties for a range of soil and sediment samples. With the recent addition of a Thin-Section...
• Smaller-but-better permanent magnets
  applications have used Neo magnets in the last decade. Suppliers of the material have, over time, implemented process improvements that have reduced its cost. For example, consider a recently introduced magnetic powder called MQP 13-9. It costs $25.50/kg. This compares favorably with earlier. Smaller...
• Good News for Guitarists -- Automated Sander Finishes Frets Fast
  mounting frame and employs a special layout of the magnetic elements that eliminates any ripples of movement that can otherwise arise as the motor transitions between magnetic poles. The sanding scheme exploits the width of the sanding belts to aid uniformity and minimize the clogging effects...
• Sponge wrings cost from MR-fluid devices
  fluid for operation, and has no seals or bearings. Magnetic flux generated by a coil or permanent magnet align metal particles in the MR fluid parallel to the field and normal to the direction of motion. The action develops yield strength allowing the fluid to resist shear. Magnetorheological (MR...
• Electric clutches on the go
  and basic design easily incorporate into mobile equipment, providing flexibility, safety, and cost savings on gas and diesel engines. Mobile clutches typically consist of three major subassemblies. The field assembly is the coil and backing flange that provides magnetic flux to engage the clutch...
• The attraction of Ferrofluid Bearings
  Magnetic-fluid technology brings compact, low-friction, self-contained bearings capable of speeds to 30,000 rpm. University of Mining and Metallurgy Bearings in precision equipment such as computer disk-drive spindles, laser scanners/printers, and gyroscopes, need excellent stiffness and damping...
• Using a nondestructive test to qualify corrosive specialty gas cylinders
  by inserting a probe into the small opening of a gas cylinder using a specially designed tool so that a hard contact can be made with the coated cylinder surface, as shown in Figure 7. The measurement method is based on magnetic principles and uses the substrate's magnetic properties to determine...
• Nanotornados stir up trouble for superconductors
  without resistance when cooled to liquid-nitrogen temperature — find use in RF filters for mobile-telephone networks, MRI machines, and particle accelerators. One problem with the materials is how they respond to magnetic fields, as from electric motors. The fields create swirling tubes of electrical...

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