news 2014



Results 21 - 40 of 90.

Electroengineering - Physics - 11.08.2014
Pairing old technologies with new for next generation electronic devices
Pairing old technologies with new for next generation electronic devices
UCL scientists have discovered a new method to efficiently generate and control currents based on the magnetic nature of electrons in semi-conducting materials, offering a radical way to develop a new generation of electronic devices. One promising approach to developing new technologies is to exploit the electron's tiny magnetic moment, or 'spin'.

Electroengineering - 04.08.2014
A little video game-playing linked with better-adjusted children
Shutterstock'src=H0zUTI9ClkDqiDqzwCtZYw-1-42 A new study suggests video game-playing for less than an hour a day is linked with better-adjusted children and teenagers.

Physics - Electroengineering - 04.08.2014
Learning how things fall apart
Learning how things fall apart
Materials that are firmly bonded together with epoxy and other tough adhesives are ubiquitous in modern life - from crowns on teeth to modern composites used in construction. Yet it has proved remarkably difficult to study how these bonds fracture and fail, and how to make them more resistant to such failures.

Physics - Electroengineering - 04.08.2014
Los Alamos probes mysteries of uranium dioxide's thermal conductivity
Los Alamos probes mysteries of uranium dioxide’s thermal conductivity
New research is showing that the thermal conductivity of cubic uranium dioxide is strongly affected by interactions between phonons carrying heat and magnetic spins. "A deeper understanding of the physics that governs the performance of important engineering materials, such as uranium dioxide, should lead to improvements in efficiency and safety," said David Andersson.

Computer Science - Electroengineering - 03.08.2014
Extracting audio from visual information
Researchers at MIT, Microsoft, and Adobe have developed an algorithm that can reconstruct an audio signal by analyzing minute vibrations of objects depicted in video. In one set of experiments, they were able to recover intelligible speech from the vibrations of a potato-chip bag photographed from 15 feet away through soundproof glass.

Electroengineering - Physics - 31.07.2014
Light pulses control graphene's electrical behavior
Light pulses control graphene’s electrical behavior
Graphene, an ultrathin form of carbon with exceptional electrical, optical, and mechanical properties, has become a focus of research on a variety of potential uses. Now researchers at MIT have found a way to control how the material conducts electricity by using extremely short light pulses, which could enable its use as a broadband light detector.

Electroengineering - 30.07.2014
Hummingbirds vs. helicopters: Stanford engineers compare flight dynamics
A quantitative analysis of hummingbird wings shows that they generate lift more efficiently than the best micro-helicopter blades. The findings could lead to more powerful, bird-inspired robotic vehicles. More than 42 million years of natural selection have turned hummingbirds into some of the world's most energetically efficient flyers, particularly when it comes to hovering in place.

Physics - Electroengineering - 28.07.2014
Proof: Magnetism makes 'Cooper pairs'
Proof: Magnetism makes 'Cooper pairs'
For decades, many physicists have taken for granted a theory that electrons in high-temperature superconductors are nudged into "Cooper pairs" that can carry an electric current without resistance by their interaction with the magnetic fields of nearby atoms. Sensitive measurements at Cornell have finally supplied the first experimental proof of the theory.

Mathematics - Electroengineering - 27.07.2014
Refrigerator magnets
The magnets cluttering the face of your refrigerator may one day be used as cooling agents, according to a new theory formulated by MIT researchers. The theory describes the motion of magnons - quasi-particles in magnets that are collective rotations of magnetic moments, or "spins." In addition to the magnetic moments, magnons also conduct heat; from their equations, the MIT researchers found that when exposed to a magnetic field gradient, magnons may be driven to move from one end of a magnet to another, carrying heat with them and producing a cooling effect.

Physics - Electroengineering - 24.07.2014
New class of materials could power memory devices
A new phase of matter known as topological insulators, until recently known only for esoteric quantum-mechanical properties, might have a practical use in controlling magnetic memory and logic devices. A team of Cornell and Penn State University physicists has demonstrated for the first time that electrical currents flowing along the surface of topological insulators can exert a torque on an adjacent magnetic layer that is 10 times more efficient than any other known mechanism.

Health - Electroengineering - 24.07.2014
New imaging agent provides better picture of the gut
Applying a method that uses nanoparticles to create visual contrast, a researcher created the above photoacoustic image of a mouse intestine. The colors indicate the depth of the intestine (red: deep; blue: shallow). Photo: Jonathan Lovell A multi-institutional team of researchers has developed a new nanoscale agent for imaging the gastrointestinal (GI) tract.

Physics - Electroengineering - 23.07.2014
Team's work with new material combination may boost computer memory
UNIVERSITY PARK, Pa. The discovery of a new material combination that could lead to a more efficient approach to computer memory and logic will be described today (July 24) . The research, led by Penn State and Cornell University physicists, studies "spintorque" in devices that combine a standard magnetic material with a novel material known as a "topological insulator." The team's results show that such a scheme can be 10 times more efficient for controlling magnetic memory or logic than any other combination of materials measured to date.

Computer Science - Electroengineering - 17.07.2014
Carnegie Mellon Combines Hundreds of Videos To Reconstruct 3D Motion Without Use of Markers
Press Release: Carnegie Mellon Combines Hundreds of Videos To Reconstruct 3D Motion Without Use of Markers-Carnegie Mellon News - Carnegie Mellon University With So Many Video Feeds, Choosing Which To Use Is Technical Challenge : Byron Spice / 412-268-9068 / bspice [a] cs.cmu (p) edu PITTSBURGH—Carnegie Mellon University researchers have developed techniques for combining the views of 480 video cameras mounted in a two-story geodesic dome to perform large-scale 3D motion reconstruction, including volleyball games, the swirl of air currents and even a cascade of confetti.

Computer Science - Electroengineering - 15.07.2014
Can video streaming over mobile broadband networks be improved?
Press release issued: 15 July 2014 Due to the increase in smartphone video applications, mobile video traffic is rising significantly. New research has shown how videos can be better transmitted over wireless links such as Wi-Fi and 4G. The study by Professor Andrew Nix and Dr Victoria Sgardoni from the University of Bristol's Communication Systems & Networks group is published in the journal, IEEE Transactions for Mobile Computing.

Health - Electroengineering - 08.07.2014
Electronic health records don’t increase Medicare fraud, study finds
ANN ARBOR-Concerns that nationwide electronic health record adoption could lead to widespread fraudulent coding and billing practices that result in higher health care spending are unfounded, according to a study from the University of Michigan School of Information and the Harvard School of Public Health.

Physics - Electroengineering - 08.07.2014
'Nano-pixels' promise thin, flexible high-res displays
A new discovery will make it possible to create pixels just a few hundred nanometres across that could pave the way for extremely high-resolution and low-energy thin, flexible displays for applications such as 'smart' glasses, synthetic retinas, and foldable screens. A team led by Oxford University scientists explored the link between the electrical and optical properties of phase change materials (materials that can change from an amorphous to a crystalline state).

Electroengineering - 07.07.2014
Mind the gap: Socioeconomic status may influence understanding of science
A new study shows the public's understanding of scientific topics varies by socioeconomic group. Above, senior research specialist Yingnan Yin examines stem cell cultures in a lab at the Waisman Center. Photo: Jeff Miller When it comes to science, socioeconomic status may widen confidence gaps among the least and most educated groups in society, according to a new study by researchers at the University of Wisconsin-Madison's Science, Media and the Public research group.

Physics - Electroengineering - 27.06.2014
Move over, silicon? New transistor material tested
Move over, silicon? New transistor material tested
For the ever-shrinking transistor, there may be a new game in town. Cornell researchers have demonstrated promising electronic performance from a semiconducting compound with properties that could prove a worthy companion to silicon. New data on electronic properties of an atomically thin crystal of molybdenum disulfide are reported online in Science June 27 by Kin Fai Mak, a postdoctoral fellow at the Kavli Institute at Cornell for Nanoscale Science.

Astronomy / Space Science - Electroengineering - 27.06.2014
Mysterious features spotted on Titan reveal the moon’s seasonal changes, says Stanford scientist
Using data collected by Cassini's radar instruments, scientists have observed changes in Titan's liquid methane lakes and seas that indicate the moon experiences seasonal changes. (Image: NASA/JPL-Caltech) Bright spots in a large lake on Titan suggest that Saturn's largest moon supports processes similar to Earth's water cycle, says Howard Zebker.

Physics - Electroengineering - 25.06.2014
Advanced Light Source Provides New Look at Skyrmions: Results Hold Promise for Spintronics
Advanced Light Source Provides New Look at Skyrmions: Results Hold Promise for Spintronics
Skyrmions, subatomic quasiparticles that could play a key role in future spintronic technologies, have been observed for the first time using x-rays. An international collaboration of researchers working at Berkeley Lab's Advanced Light Source (ALS) observed skyrmions in copper selenite (Cu2SeO 3 ) an insulator with multiferroic properties.

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