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 ...

Nanotechnology / Nanophysics

created Dec 20, 2011 | popularity 5 / 5 (4) | comments 0 | with audio podcast

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 ...

Physics / General Physics

created Dec 12, 2011 | popularity 5 / 5 (1) | comments 1

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 ...

Physics / General Physics

created Nov 30, 2011 | popularity not rated yet | comments 1

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

created Oct 26, 2011 | popularity 5 / 5 (2) | comments 0

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 ...

Physics / General Physics

created Oct 18, 2011 | popularity 4.8 / 5 (13) | comments 8 | with audio podcast feature

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 ...

Physics / General Physics

created Oct 14, 2011 | popularity 5 / 5 (1) | comments 0 | with audio podcast

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. ...

Physics / General Physics

created Sep 12, 2011 | popularity 5 / 5 (1) | comments 0

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 ...

Physics / General Physics

created Sep 02, 2011 | popularity 5 / 5 (1) | comments 0

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 ...

Chemistry / Biochemistry

created Jul 24, 2011 | popularity 5 / 5 (4) | comments 0 | with audio podcast

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 ...

Medicine & Health / Research

created Jun 21, 2011 | popularity 3.8 / 5 (4) | comments 18 | with audio podcast

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

created Apr 15, 2011 | popularity 4.8 / 5 (8) | comments 0

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 ...

Physics / General Physics

created Mar 08, 2011 | popularity 4.3 / 5 (3) | comments 0

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

created Feb 23, 2011 | popularity 5 / 5 (1) | comments 0

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 ...

Nanotechnology / Nanophysics

created Feb 14, 2011 | popularity 4.7 / 5 (3) | comments 0 | with audio podcast

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 ...

Physics / Condensed Matter

created Feb 09, 2011 | popularity 4.6 / 5 (8) | comments 0 | with audio podcast