News tagged with magnetic sensors
An unlikely route to ferroelectricity
(Phys.org) -- Ferroelectricity, which was first observed in the 1940s, is an interesting phenomenon involving the spontaneous (non-induced) formation of charge polarization (separation of charge) in certain ...
May 18, 2012 |
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Mini-sensor measures magnetic activity in human brain
A miniature atom-based magnetic sensor developed by the National Institute of Standards and Technology (NIST) has passed an important research milestone by successfully measuring human brain activity. Experiments ...
Apr 19, 2012 |
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Hall effect magnetic field sensors for high temperatures and harmful radiation environments
Toyohashi Tech researchers have fabricated Hall effect magnetic field sensors operable at least 400 C and in extreme radiation conditions using gallium nitride-based heterostructures a with two-dimensional ...
Mar 22, 2012 |
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Electrical circuits talk to single atoms
(PhysOrg.com) -- If a practical quantum computer is ever to be realized, conventional electronic devices will have to interface with the delicate quantum systems such as atoms or ions in traps or wisps of ...
Mar 06, 2012 |
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NEC supports smart cities with ultra low power magnetic sensors for electronic water and gas meters
NEC Corporation announced today the commencement of sales for the MRUS74S and MRUS74X, two new ultra low power magnetic sensors, which enable the use of electronic water meters and gas meters that are essential ...
Feb 21, 2012 |
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Tongue drive system goes inside the mouth to improve performance and user comfort
The Tongue Drive System is getting less conspicuous and more capable. Tongue Drive is a wireless device that enables people with high-level spinal cord injuries to operate a computer and maneuver an electrically ...
Feb 20, 2012 |
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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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