Technical Articles
Dexter Magnetic Technologies, Inc. has published these technical articles:
(Magnets)
From this Article:
Particle separation is a common task in the life sciences. In biomedical fields ranging from immunology and proteogenomics to molecular biology and in-vitro diagnostics, it is often necessary or...
(Magnets)
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A rare permanent magnet system can replace a high power consumption electromagnet in the beam bending or deflection section a mass spectrometer....
(Magnets)
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The advent of the PC as a commonplace design tool has greatly enhanced the magnetic system designer's ability to predict the behavior of magnetic systems. However, there is still, as in any science, a...
(Magnets)
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Dipoles consist of a pair of magnets across a gap. They come in many shapes/sizes and the magnets are usually mounted on a steel frame (also called a yoke) for magnetic efficiency, magnetic shielding...
(Magnets)
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At Dexter we are the magnet industry's leading provider of custom magnetic couplings. We offer three types of couplings: synchronous, eddy, and hysteresis....
(Medical)
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Dexter Magnetic Technologies has designed and produced a large variety of permanent magnet static field sources for MRI/NMR applications, some based on our current quadrature magnet patents and others...
(Magnets)
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Magnetic sensors indirectly measure properties such as direction, position, rotation, angle and current by detecting the magnetic field and its changes. Compared to other direct methods, such as...
(Magnets)
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NeoForm® material produces almost twice as much flux density as anisotropic ceramic magnets (grades 5 - 8), so substituting NeoForm® material is a fairly safe way to extract greater...
(Magnets)
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A hysteresis alloy's composition, orientation and heat treat are optimized to produce maximum hysteresis losses. Generally materials are engineered to reduce losses. Hysterloy is usually supplied in...
(Magnets)
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Two good printed resource materials are Advances in Biomagnetic Separation published by Eaton Publishing, ISBN 1881-299-0105 and Magnetic Separation Techniques Applied to Cellular and Molecular...
(Magnets)
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Indeed there are. There has been much work on alloys based on a compound of Sm-Fe-N [aka Samarium-Iron Nitrides]. Although these materials do not as yet have the kinds of energy products that we are...
(Magnets)
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Nd-Fe-B magnets have improved dramatically over the last 10 years. But they still contain iron and other reactive phases, and will rust. Nd-Fe-B is a blended powder before it is pressed into a magnet....
(Magnets)
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As a general rule, cast or sintered magnet materials are very hard (RC46). This is 46 on the Rockwell "C" scale, which is harder than commercially available drills and taps, so tools will heat up and...
(Magnets)
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What's the difference between the intrinsic curve and the normal curve? I understand that we generally use normal curve when designing the magnets, so when is the intrinsic curve used?
The intrinsic...
(Magnets)
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Magnetic flux lines can not cross each other, so magnets in repulsion develop radial vectors whose intensity increases as the magnets approach each other. To the extent that the amplitude of the...
(Magnets)
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What are the possible magnetization patterns for magnets?...
(Magnets)
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"How do I convert an Amp-Turn rating to Gauss?" and other questions....
(Magnets)
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Magnetic flux will travel along the path that offers it the least amount of resistance, (or, more accurately, the least amount of reluctance). Steel components in a magnetic circuit offer the flux a...
(Magnets)
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Magnet strength needs to be defined. Magnet strength actually is a measure of total flux in the area of interest. If greater holding strength is desired, then more Br is needed, and since holding...
(Magnets)
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The Curie temperature refers to the transition temperature above which ferromagnetic materials lose their useful magnetic properties. Ferrite materials are actually ferromagnetic materials [a similar...
(Magnets)
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All magnetic materials are at all times as fully magnetized as their thermal state permits. Prior to "magnetization" their magnetic domains arrange randomly to minimize their internal (and external)...
(Magnets)
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Eddy current devices have a straight-line torque-speed characteristic, with the torque increasing linearly with the speed by virtue of the fact that the induced currents vary in magnitude with the...
(Magnets)
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The Helmholtz coil test method is well suited to modern high coercivity magnet materials and can be implemented at relatively low cost. The theory behind the method is taught in physics books and has...
(Magnets)
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Geared devices are a necessity in many types of downhole tools. The primary purpose of gearing is to provide either a speed change or a force change. Limitations in diameter on most downhole tools...
(Magnets)
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Magnetic fields are pivotal in the manufacture and processing of advanced magneto-electronic
thin films. These include giant magnetoresistive (GMR), current perpendicular to plane (CPP) spin valves...
(Magnets)
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An overview of the magnetic systems used in biological high-gradient magnetic separation (HGMS) is presented. The magnetic design parameters of a range of separation devices are discussed. Such...
(Magnets)
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Scalable Magnetic Designs to Achieve Comparable
Capture Rates and Capture Efficiency across Multiple Vessel Diameters...
(Magnets)
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A new method for analyzing the erosion profiles produced by rotating magnetrons is presented.
The average tangential flux is calculated in rings concentric with the rotation axis and plotted versus...
(Magnets)
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Computer chip manufacturers and auto
manufacturers delight in the feeding frenzy
that follows the announcement of a new, faster model. This "speed greed" makes premium products the subject of...
(Magnets)
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Understanding permanent magnets / rare earth magnets and how their application can play into the innovative devices of today's markets is the foundation of our business. At Dexter, our long history of...
(Magnets)
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Sophisticated medical technology is creating faster and more efficient processes to support today's health care needs. From nanotechnology developments to expanding knowledge of cellular biology,...
(Nondestructive Testing Equipment)
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Proactivity has recently been used to solve
the problems that have plagued the industry
with tubing-retrievable safety valve (TRSV)
performance as development has ventured
into deep-water...
(Magnets)
From this Article:
Understanding permanent magnets / rare earth magnets and how their application can play into the innovative devices of today's markets is the foundation of our business. Dexter's long history of...
(Specialized Industrial Products)
From this Article:
A prototype device has been developed to automatically keep the bead solution homogenous in a reagent trough and allows for the bead concentrations to be quantitatively verified. The device consists...