A new "templated growth" technique for fabricating nanoribbons of epitaxial graphene has produced structures just 15 to 40 nanometers wide that conduct current with almost no resistance. These structures could address the challenge of connecting graphene devices made with conventional architectures – and set the stage for a new generation of devices that take advantage of the quantum properties of electrons.
Tech
MIAMI – March 21, 2011 -- As the North Brazil Current (NBC) moves northward along the northeastern coast of Brazil, it draws water from the South Equatorial Current and the freshwater outflow from the Amazon River, providing a source for warm, nutrient-rich water. Just northwest of Brazil, part of the NBC banks a hard right and flows east along the equator. Occasionally, the turn is especially sharp and the current loops around, pinching off an independently- traveling parcel of warm water.
NEW YORK (Mar. 21, 2011) -- A new study published by researchers at Weill Cornell Medical College and the University of California, Davis, foresees improvements in patient outcomes after a major earthquake through more effective use of information technology. A control tower-style telemedicine hub to manage electronic traffic between first responders and remote medical experts could boost the likelihood that critically injured victims will get timely care and survive, according to the team's computer simulation model.
Princeton researchers have invented an extremely sensitive sensor that opens up new ways to detect a wide range of substances, from tell-tale signs of cancer to hidden explosives.
SANTA FE, N.M. – Garbage mounds left by prehistoric humans might have driven the formation of many of the Florida Everglades' tree islands, distinctive havens of exceptional ecological richness in the sprawling marsh that are today threatened by human development.
Tree islands are patches of relatively high and dry ground that dot the marshes of the Everglades. Typically a meter (3.3 feet) or so high, many of them are elevated enough to allow trees to grow. They provide a nesting site for alligators and a refuge for birds, panthers, and other wildlife.
COLUMBUS, Ohio – A daily dose of safflower oil, a common cooking oil, for 16 weeks can improve such health measures as good cholesterol, blood sugar, insulin sensitivity and inflammation in obese postmenopausal women who have Type 2 diabetes, according to new research.
This finding comes about 18 months after the same researchers discovered that safflower oil reduced abdominal fat and increased muscle tissue in this group of women after 16 weeks of daily supplementation.
MANHATTAN, KAN. -- One of Kansas' most abundant natural resources may hold the key to preventing major power outages. A team of Kansas State University engineers is researching ways to use Kansas wind and other distributed energy sources to avoid cascading failures.
Sakshi Pahwa, doctoral student in electrical and computer engineering, India, explored the topic for her recently completed master's project, "Distributed Sources and Islanding to Mitigate Cascading Failures in Power Grid Networks." The project was a winner at the recent Capitol Graduate Research Summit in Topeka.
COLUMBUS, Ohio – Engineers at Ohio State University have invented a lens that enables microscopic objects to be seen from nine different angles at once to create a 3D image.
Other 3D microscopes use multiple lenses or cameras that move around an object; the new lens is the first single, stationary lens to create microscopic 3D images by itself.
Allen Yi, associate professor of integrated systems engineering at Ohio State, and postdoctoral researcher Lei Li described the lens in a recent issue of the Journal of the Optical Society of America A.
A joint study by local oyster growers and researchers at the Virginia Institute of Marine Science shows that moving farmed oysters into saltier waters just prior to harvest nearly eliminates the presence of a bacterium that can sicken humans.
The findings—reported by VIMS professors Kim Reece and Howard Kator, and local oyster growers Thomas Gallivan, A.J. Erskine, and Tommy Leggett—may offer a relatively low-cost solution to a controversial change in FDA regulations that many growers believe will eventually affect the oyster industry in Chesapeake Bay.
LOS ALAMOS, New Mexico, March 18, 2011—Researchers have revealed a new single-stage method for recharging the hydrogen storage compound ammonia borane. The breakthrough makes hydrogen a more attractive fuel for vehicles and other transportation modes.
In an article appearing today in Science magazine, Los Alamos National Laboratory (LANL) and University of Alabama researchers working within the U.S. Department of Energy's Chemical Hydrogen Storage Center of Excellence describe a significant advance in hydrogen storage science.
With intensity a million times brighter than sunlight, a new synchrotron-based imaging technique offers high-resolution pictures of the molecular composition of tissues with unprecedented speed and quality. Carol Hirschmugl, a physicist at the University of Wisconsin-Milwaukee (UWM), led a team of researchers from UWM, the University of Illinois at Urbana-Champaign and University of Illinois at Chicago (UIC) to demonstrate these new capabilities.
CHAMPAIGN, Ill. — The batteries in Illinois professor Paul Braun's lab look like any others, but they pack a surprise inside.
Braun's group developed a three-dimensional nanostructure for battery cathodes that allows for dramatically faster charging and discharging without sacrificing energy storage capacity. The researchers' findings will be published in the March 20 advance online edition of the journal Nature Nanotechnology.
Statistics released today by the American Society of Plastic Surgeons (ASPS) show that more men are going under the knife. Overall cosmetic plastic surgery procedures in men were up 2 percent in 2010 compared to 2009. However, many male surgical procedures increased significantly. Facelifts for men rose 14 percent in 2010 while male liposuction increased 7 percent.
INDIANAPOLIS – A new study, conducted by researchers from the Regenstrief Institute and the schools of medicine at Indiana University and Moi University, is one of the first to explore and demonstrate the impact of electronic record systems on quality of medical care in a developing country.
MADISON, WI MARCH 17, 2011 – Nitrous oxide is a potent greenhouse gas and a precursor to compounds that contribute to the destruction of the ozone. Intensively managed, grazed pastures are responsible for an increase in nitrous oxide emissions from grazing animals' excrement. Biochar is potentially a mitigation option for reducing the world's elevated carbon dioxide emissions, since the embodied carbon can be sequestered in the soil. Biochar also has the potential to beneficially alter soil nitrogen transformations.