Results 501 - 520 of 612.

Physics - Electroengineering - 09.09.2013
New Method for Harvesting Energy from Light
New Method for Harvesting Energy from Light
Researchers from the University of Pennsylvania have demonstrated a new mechanism for extracting energy from light, a finding that could improve technologies for generating electricity from solar energy and lead to more efficient optoelectronic devices used in. Dawn Bonnell , Penn's vice provost for research and Trustee Professor of Materials Science and Engineering in the School of Engineering and Applied Science , led the work, along with David Conklin, a doctoral student.

Electroengineering - Physics - 03.09.2013
Breakthrough technique that could make electronics smaller and better
A surprising low-tech tool—Scotch Magic tape—was one of the keys to the discovery MINNEAPOLIS / ST. PAUL (09/03/2013) —An international group of researchers from the University of Minnesota, Argonne National Laboratory and Seoul National University have discovered a groundbreaking technique in manufacturing nanostructures that has the potential to make electrical and optical devices smaller and better than ever before.

Electroengineering - Mechanical Engineering - 29.08.2013
Discovery could make solar power cheaper, more accessible
Discovery could make solar power cheaper, more accessible
UAlberta research paves way for nanoparticle-based 'ink' to make printable or spray-on solar cells. University of Alberta researchers have found that abundant materials in the Earth's crust can be used to make inexpensive and easily manufactured nanoparticle-based solar cells.

Electroengineering - Life Sciences - 08.08.2013
Researchers’ new technique allows them to measure electrical activity in a living neuron
Yale researchers have discovered a new technique that allows them to measure electrical activity of genetically-targeted sets of neurons in a living organism, a prerequisite for understanding the complex language of the brain. The technique, described in the Aug. 8 issue of the journal Cell, involves inserting fluorescent proteins in neurons of a fruitfly that responds to changes in electrical signals and are recorded by optical sensors.

Physics - Electroengineering - 05.08.2013
A layer of tiny grains can slow sound waves
Layer of microscopic spheres offers new approach to controlling acoustic waves. In some ways, granular material - such as a pile of sand - can behave much like a crystal, with its close-packed grains mimicking the precise, orderly arrangement of crystalline atoms. Now researchers at MIT have pushed that similarity to a new limit, creating two-dimensional arrays of micrograins that can funnel acoustic waves, much as specially designed crystals can control the passage of light or other waves.

Electroengineering - Chemistry - 30.07.2013
Researchers overcome technical hurdles in quest for inexpensive, durable electronics and solar cells
Researchers overcome technical hurdles in quest for inexpensive, durable electronics and solar cells
University of Minnesota engineers discover novel technology for producing "electronic ink" MINNEAPOLIS / ST. PAUL (07/30/2013) —Electronic touch pads that cost just a few dollars and solar cells that cost the same as roof shingles are one step closer to reality today. Researchers in the University of Minnesota's College of Science and Engineering and the National Renewable Energy Laboratory in Golden, Colo., have overcome technical hurdles in the quest for inexpensive, durable electronics and solar cells made with non-toxic chemicals.

Electroengineering - Physics - 16.07.2013
Finding the keys to boiling heat transfer
Understanding the properties that control surface dissipation of heat could lead to improved power plants and electronics with high heat-transfer rates. A team of MIT researchers has succeeded in carrying out the first systematic investigation of the factors that control boiling heat transfer from a surface to a liquid.

Health - Electroengineering - 15.07.2013
Electronic health records slow the rise of healthcare costs
ANN ARBOR-Use of electronic health records can reduce the costs of outpatient care by roughly 3 percent, compared to relying on traditional paper records. That's according to a new study from the University of Michigan that examined more than four years of healthcare cost data in nine communities. The "outpatient care" category in the study included the costs of doctor's visits as well as services typically ordered during those visits in laboratory, pharmacy and radiology.

Physics - Electroengineering - 15.07.2013
'Heavy fermion' pairing may help explain superconductors
'Heavy fermion' pairing may help explain superconductors
CeCoIn 5 is an oxymoron. It's a "heavy fermion" material, in which electrons act like their mass is 1,000 times what it should be, because moving electrons interact magnetically with its atoms and slow down. But it also can be a superconductor, in which an electric current flows without resistance, when its super heavy electrons join in "Cooper pairs" that are magnetically neutral and avoid magnetic interference.

Electroengineering - Computer Science - 08.07.2013
Robot mom would beat robot butler in popularity contest
UNIVERSITY PARK, Pa - If you tickle a robot, it may not laugh, but you may still consider it humanlike - depending on its role in your life, reports an international group of researchers. Designers and engineers assign robots specific roles, such as servant, caregiver, assistant or playmate. Researchers found that people expressed more positive feelings toward a robot that would take care of them than toward a robot that needed care.

Physics - Electroengineering - 12.06.2013
Nano-thermometer enables first atomic-scale heat dissipation measurements
Nano-thermometer enables first atomic-scale heat dissipation measurements
ANN ARBOR-In findings that could help overcome a major technological hurdle in the road toward smaller and more powerful electronics, an international research team involving University of Michigan engineering researchers, has shown the unique ways in which heat dissipates at the tiniest scales. A paper on When a current passes through a material that conducts electricity, it generates heat.

Electroengineering - Physics - 12.06.2013
Controlling magnetic clouds in graphene
Controlling magnetic clouds in graphene
12 Jun 2013 Wonder material graphene can be made magnetic and its magnetism switched on and off at the press of a button, opening a new avenue towards electronics with very low energy consumption. In a report published in Nature , a University of Manchester team led by Dr Irina Grigorieva shows how to create elementary magnetic moments in graphene and then switch them on and off.

Electroengineering - Physics - 07.06.2013
Plastic electronics made easy
Plastic electronics made easy
Scientists have discovered a way to better exploit a process that could revolutionise the way that electronic products are made. The scientists from Imperial College London say improving the industrial process, which is called crystallisation, could revolutionise the way we produce electronic products, leading to advances across a whole range of fields; including reducing the cost and improving the design of plastic solar cells (see pull-out box).

Physics - Electroengineering - 05.06.2013
Metamaterial flexible sheets could transform optics
Metamaterial flexible sheets could transform optics
Advances would boost security screening systems, infrared thermal cameras, energy harvesting, and radar systems This development is a key step toward replacing bulky conventional optics with flexible sheets that are about the thickness of a human hair and weighing a fraction of an ounce.

Electroengineering - Chemistry - 04.06.2013
Scientists create novel silicon electrodes that improve lithium-ion battery performance
Scientists create novel silicon electrodes that improve lithium-ion battery performance
Stanford scientists have developed inexpensive silicon-based electrodes that dramatically improve the charge storage capacity of lithium-ion batteries. Stanford University scientists have dramatically improved the performance of lithium-ion batteries by creating novel electrodes made of silicon and conducting polymer hydrogel, a spongy substance similar to the material used in soft lenses and other household products.

Life Sciences - Electroengineering - 17.05.2013
Electrical boost to mental arithmetic powers
A weak electrical signal can boost people's powers of mental arithmetic over a period of months, suggests a small scale study at the University of Oxford. The technique involves placing electrodes on the scalp of the head and applying random electrical noise to stimulate parts of the brain and encourage nerve cells to fire.

Physics - Electroengineering - 16.05.2013
Stacking 2-D materials produces surprising results
New experiments reveal previously unseen effects, could lead to new kinds of electronics and optical devices. Graphene has dazzled scientists, ever since its discovery more than a decade ago, with its unequalled electronic properties, its strength and its light weight. But one long-sought goal has proved elusive: how to engineer into graphene a property called a band gap, which would be necessary to use the material to make transistors and other electronic devices.

Life Sciences - Electroengineering - 15.05.2013
Evolution shapes new rules for ant behavior, Stanford research finds
Biologist Deborah M. Gordon's decades-long study of the collective behavior of harvester ant colonies has provided a rare real-time look at natural selection at work. In ancient Greece, the city-states that waited until their own harvest was in before attacking and destroying a rival community's crops often experienced better long-term success.

Physics - Electroengineering - 13.05.2013
Graphene joins the race to redefine the ampere
A new joint innovation by the University of Cambridge and the National Physical Laboratory (NPL), the UK's National Measurement Institute, could pave the way for redefining the ampere in terms of fundamental constants of physics. Graphene is constantly revealing exciting new applications and as our understanding of the material advances rapidly, we seem able to do more and more with it Malcolm Connolly The world's first graphene single-electron pump (SEP), described in a paper , provides the speed of electron flow needed to create a new standard for electrical current based on electron charge.

Physics - Electroengineering - 09.05.2013
Pear shaped atomic nuclei
Pear shaped atomic nuclei
Scientists at the University of Liverpool have shown that some atomic nuclei can assume the shape of a pear which contributes to our understanding of nuclear structure and the underlying fundamental interactions. Most nuclei that exist naturally are not spherical but have the shape of a rugby ball. While state-of-the-art theories are able to predict this, the same theories have predicted that for some particular combinations of protons and neutrons, nuclei can also assume very asymmetric shapes, like a pear where there is more mass at one end of the nucleus than the other.