News tagged with magnetic sensors
A new spin in diamonds for quantum technologies
(PhysOrg.com) -- To explore the future potential of diamonds in quantum devices, researchers from Macquarie University have collaborated with the University of Stuttgart and University of Ulm in Germany towards ...
Dec 20, 2011 |
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Study of switching behavior in differential dual spin valves reveals the role of interlayer couplings
Spin valves are essential building blocks in the magnetic sensors of read heads in hard disk drives. They consist of two magnetic layers separated by a non-magnetic layer and act as valves for electrons depending ...
Dec 12, 2011 |
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Scissors-type trilayer giant magnetoresistive sensor using heusler alloy ferromagnet
Japanese researchers have demonstrated a scissors-type trilayer magnetoresistance device that is promising for narrow readers of ultra-high density hard disk drives (HDD). This device uses an antiferromagnetic ...
Nov 30, 2011 |
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Advance toward a breath test to diagnose multiple sclerosis
Scientists are reporting the development and successful tests in humans of a sensor array that can diagnose multiple sclerosis (MS) from exhaled breath, an advance that they describe as a landmark in the long ...
Chemistry / Analytical Chemistry
Oct 26, 2011 |
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Magnetic sensors can measure distances between vehicles
(PhysOrg.com) -- Every vehicle has a magnetic field, and researchers have now found that a vehicle’s magnetic field has an inverse relationship with distance at small distances. The relationship provides ...
Oct 18, 2011 |
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Magnetic attraction: NIST microchip demonstrates concept of 'MRAM for biomolecules'
(PhysOrg.com) -- Researchers from the National Institute of Standards and Technology (NIST) and University of Colorado Boulder (CU) have developed a low-power microchip that uses a combination of microfluidics ...
Oct 14, 2011 |
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Spin pumping effect proven for the first time
German physicists led by Prof. Dr. Hartmut Zabel have demonstrated the spin pumping effect in magnetic layers for the first time experimentally. The behaviour of the spin pumping had previously only been predicted theoretically. ...
Sep 12, 2011 |
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Magnetic field sensors for monitoring heart and brain activity developed
High sensitivity magnetic sensors are important in medical diagnostics for applications such as monitoring heart and brain activities, where mapping distributions of localized extremely weak magnetic fields ...
Sep 02, 2011 |
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Pocket chemistry: DNA helps glucose meters measure more than sugar
Glucose meters aren't just for diabetics anymore. Thanks to University of Illinois chemists, they can be used as simple, portable, inexpensive meters for a number of target molecules in blood, serum, water ...
Jul 24, 2011 |
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Can humans sense the Earth's magnetism?
For migratory birds and sea turtles, the ability to sense the Earth's magnetic field is crucial to navigating the long-distance voyages these animals undertake during migration. Humans, however, are widely assumed not to ...
Jun 21, 2011 |
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Scientists map volcanic plume under Yellowstone
Scientists using electric and magnetic sensors have mapped the size and composition of a vast plume of hot rock and briny fluid down to 200 miles below Yellowstone National Park's surface, according to a new ...
Space & Earth / Earth Sciences
Apr 15, 2011 |
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Researchers use spin waves to measure magnetic polarization of electrical current
In the hard drive industry, the rapid growth of storage density has been propelled in part by developments in the sensors used to read the magnetic "bits" on the disk. Recently, the use of giant magnetoresistance (GMR) in ...
Mar 08, 2011 |
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Handheld nanoLAB detects disease proteins in minutes
In 2009, Stanford University faculty member Shan Wang and doctoral students Richard Gaster and Drew Hall demonstrated that they could use the same ultrasensitive magnetic sensors that form the basis of today's compact, high-capacity ...
Nanotechnology / Bio & Medicine
Feb 23, 2011 |
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Researchers control conduction, surface states in topological insulator nanoribbons
In recent years, topological insulators have become one of the hottest topics in physics. These new materials act as both insulators and conductors, with their interior preventing the flow of electrical currents while their ...
Feb 14, 2011 |
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Delving into manganite conductivity
(PhysOrg.com) -- Chemical compounds called manganites have been studied for many years since the discovery of colossal magnetoresistance, a property that promises important applications in the fields of magnetic ...
Feb 09, 2011 |
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