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3-D Nanocones Help Boost Solar Cell Efficiency
OAK RIDGE, Tenn., May 6, 2011 — With the creation of a 3-D nanocone-based solar cell platform, the light-to-power conversion efficiency of photovoltaics has been boosted by nearly 80 percent. The technology substantially overcomes the problem of poor transport of charges generated by solar photons. These charges — negative electrons and positive holes — typically become trapped by defects in bulk materials and their interfaces and degrade performance. "To solve the entrapment problems that reduce solar...
A Limit to Nanotechnology Mass Production?
CAMBRIDGE, England, May 5, 2011 — In a bold statement that raised questions about a billion-dollar industry, Mike Kelly, professor and nanotechnology scientist at the Center for Advanced Photonics and Electronics at the University of Cambridge, said that structures with a diameter...
Camera vs. Eye: Why the Eyes Have It
BERKELEY, Calif., May 5, 2011 — The human eye long ago solved a problem common to both digital and film cameras: how to get good contrast in an image while capturing faint detail. Physiologists described the retina’s tricks for improving contrast and sharpening edges decades...
Pulses Control Electrons from Nanospheres
GARCHING, Germany, May 5, 2011 — Extremely short and intense laser pulses can now control and monitor strongly accelerated electrons from nanospheres. When intense laser light interacts with electrons in nanoparticles that consist of many million individual atoms, these...
Terahertz Invisibility Cloak Created
EVANSTON, Ill., May 4, 2011 — Researchers at Northwestern University have created a cloaking material that can render objects invisible in the terahertz range. Although the design can’t translate into an invisibility cloak for the visible spectrum, it could have...
The BOSS proves it can do the job with quasars
BERKELEY, Calif., May 4, 2011 — The biggest 3-D map of the distant universe ever made, using light from 14,000 quasars, has been constructed by scientists with the third Sloan Digital Sky Survey (SDSS-III). The map is the first major result from the Baryon Oscillation...
VCSEL-driven Atomic Clock Available to Consumers
ALBUQUERQUE, N.M., May 4, 2011 — A matchbook-size atomic clock 100 times smaller than its commercial predecessors has been created by a team of researchers at Symmetricom Inc., Draper Laboratory and Sandia National Laboratories. The portable chip scale atomic clock (CSAC) —...
‘Carpet Cloak’ Hides More Than its Size Implies
LYNGBY, Denmark, May 3, 2011 — Optical cloaking, the ability to conceal small objects by bending and channeling light around them, is getting a boost from metamaterials in a new technology called “carpet cloaking,” which can conceal a much larger area than other...
Solar Power Goes Viral
CAMBRIDGE, Mass., May 3, 2011 — A genetically modified virus is being used to produce structures that improve solar cell efficiency by nearly one-third. In a solar cell, sunlight hits a light-harvesting material, causing it to release electrons that can be harnessed to...
Putting the "I" in Intelligence Gathering
ORLANDO, Fla., April 27, 2011 — The power of social media, most recently demonstrated in the uprisings in Iran, Tunisia and Yemen and the revolution in Egypt, will also figure prominently in the next generation of ISR (intelligence, surveillance and reconnaissance) technology,...
Biomagnetics Receives Integrated Optical Biosensor for Disease Diagnosis
SAN FRANCISCO, May 2, 2011 — Biomagnetics Diagnostics Corp. has accepted delivery of a novel biosensor developed at Los Alamos National Laboratory. The sensor, which is proposed for use in cholera, tuberculosis and malaria diagnosis, could be in clinical trials by 2012. ...
Old Polymers Learn New Tricks
AMES, Iowa, May 2, 2011 — New tricks to improve the properties of certain organic polymers that mimic the properties of traditional inorganic semiconductors are being investigated by Malika Jeffries-EL, an assistant professor of chemistry at Iowa State University. The new...
T-ray Pulses Produced by QCL
PARIS, May 2, 2011 — For the first time, terahertz rays, or T-ray pulses, have been made to emit separate "packets" of terahertz radiation, rather than one continuous beam, from a quantum cascade laser. The work could open up new ways for the T-rays to image natural and...
“Superskin” goes solar
STANFORD, Calif. – A new ultrasensitive electronic skin can detect chemicals and biological molecules in addition to sensing an incredibly light touch. And now, this “superskin” can be powered by stretchable solar cells, opening up more applications in...
A game of quantum hot potato
BOULDER, Colo. – To simplify information processing for quantum computers and simulations, scientists have coaxed two atoms in separate locations to take turns jiggling back and forth while swapping the smallest measurable units of energy. For the first time,...
Atoms acting as lasers
CANBERRA, Australia – An atom laser that behaves exactly like a light laser has opened up new possibilities in applications such as holograms. A research team from The Australian National University ARC Centre of Excellence for Quantum-Atom Optics has shown that a beam...
Attracting top workers is a full-time job in Germany
AHRENSBURG, Germany – Machine vision manufacturer Basler AG is ramping up its hiring once again, reflecting an economic rebound being experienced throughout most of Germany. The company, which currently has about 250 employees, added five new people last year as the...
Extremely fast film processes recorded
KIEL, Germany – Using pulses in the soft x-ray spectral region, scientists have demonstrated how quickly an intense laser can change the electrical properties of solids. The findings may lead to the development of optoelectronic components with faster data...
Manipulating nanowires for single-mode lasers
HANGZHOU, China, and BEIJING – A single-nanowire laser has been developed that, unlike earlier ones, which operated mostly in multiple modes, operates in a controllable single mode. Researchers from Zhejiang and Peking universities used a nanowire between 50 and 75 μm in...
Mimicking photosynthesis for cheap hydrogen fuel
UNIVERSITY PARK, Pa. – Production of inexpensive hydrogen for automotive or jet fuel may one day be possible by mimicking photosynthesis, but a number of hurdles first must be overcome. Scientists at Pennsylvania State University have developed an artificial system...
More powerful integrated circuits
SUNNYVALE, Calif. – A record 1 Tb/s on a single integrated indium phosphide chip has been achieved, allowing for more efficient data-handling technologies and expanding the capacities of optical networks. Infinera Corp. has manufactured a photonic integrated circuit...
N-slit laser interferometer developed
ROCHESTER, N.Y. – Scientists have developed an N-slit laser interferometer that is suitable for secure terrestrial free-space optical communications over propagation distances and clear-air turbulence detection. The device was created by physicists from...
Navy looks to deep-six noisy lighting
ARLINGTON, Va. – The big buzz aboard US Navy vessels these days is the one coming from noisy fluorescent lighting, prompting the rollout of a quieter alternative. The Solid State Lighting (SSL) project, created by the Office of Naval Research’s TechSolutions...
Terahertz bomb sniffer wins student prize
TROY, N.Y. – A new detection method extends the distance from which powerful terahertz technology can remotely sniff out hidden explosives, chemicals and other materials. Benjamin Clough, a doctoral student at Rensselaer Polytechnic Institute, has developed...
USAF works to improve silicon photonics processes
ARLINGTON, Va. – The US?Air Force Office of Scientific Research announced that it will fund efforts to put silicon photonics within the grasp of scientists and startup companies. The new program will be called OpSIS, short for Optoelectronic Systems Integration in...

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