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Research & Technology News

Plasmonic nanoantennas promise optics with strange new abilities
WEST LAFAYETTE, Ind. – Arrays of plasmonic nanoantennas can abruptly change the phase of light, potentially enabling more powerful microscopes, computers and telecommunications systems. “By abruptly changing the phase, we can dramatically modify how light propagates, and that opens up the possibility of many potential applications,” said Vladimir Shalaev, scientific director of nanophotonics at Purdue’s Birck Nanotechnology Center and a distinguished professor of electrical and computer...
Semiconductor etching gets easier
CHAMPAIGN, Ill. – A method that chemically etches patterned arrays in gallium arsenide will make high-end optoelectronic devices easier to manufacture. Developed by a team led by Xiuling Li of the University of Illinois, the technique will enable faster, less...
Streak camera stops light for trillion-fps video
CAMBRIDGE, Mass. – A novel streak camera that captures images in picosecond increments now makes it possible to stop not just a bullet piercing an apple or a horse in mid-canter, but light particles themselves as they traverse a scene. The camera, created in...
TIGO laser ranging telescope targets satellites
DARMSTADT, Germany – It was like a planetary-scale video game: Working from orbital predictions, a research team took the first laser measurements of Galileo operational satellites in orbit using lasers in Chile. The Transportable Integrated Geodetic Observatory...
Transparency discovery could benefit LEDs, touch screens
SANTA BARBARA, Calif. – Scientists have uncovered the fundamental limitations of optical transparency in tin dioxide (SnO2), a common conducting oxide. The discovery could lead to more energy efficient photovoltaics, LEDs and LCD touch screens. Transparent conducting...
Full Spectrum Boosts Solar Cell Power
PASADENA, Calif., Feb. 29, 2012 — Solar cell efficiency, currently hovering in the 15 to 20 percent range, can theoretically be boosted to as high as 70 percent by printing specially engineered nanostructures on the cells, researchers say.
Lasers Find Distant Hidden Explosives
VIENNA, Feb. 29, 2012 — A new method uses laser light to detect chemicals inside a container from a distance of more than 100 meters.
2 Molecules Communicate Via Single Photons
ZURICH, Feb. 28, 2012 — Using an optical circuit, the interaction of a single photon with a single molecule — one of the most fundamental processes in nature — was successfully observed. The experiment is valuable to our understanding of fundamental physics and...
Glass-Based LEDs Go UV
LOS ALAMOS, N.M., Feb. 28, 2012 — Inorganic LEDs that emit in the difficult-to-achieve ultraviolet range were produced by embedding nanocrystals in glass, a step toward using such devices in biomedical applications.
A Rainbow for the Palm of Your Hand
BUFFALO, N.Y., Feb. 27, 2012 — A new kind of polymer that is cheap and easy to make reflects many different wavelengths of light when viewed from a single perspective and could form the basis of handheld multispectral imaging devices.
Tunable Optical Filter Uses Nanoantennas
CAMBRIDGE, Mass., Feb. 27, 2012 — A new kind of tunable color filter that uses optical nanoantennas to obtain precise control of color output could be used to create invisible security tags to mark currency, and for display and biological imaging applications.
ESA Pursues 3-D Imaging Lidar
PARIS, Feb. 24, 2012 — The European Space Agency (ESA) is developing a 3-D imaging lidar as a navigation aid for deep-space exploration.
New Bandgap Boundaries Could Boost Electronics
OAK RIDGE, Tenn., Feb. 23, 2012 — A novel layer-by-layer growth technique can achieve a 30 percent reduction in the bandgap of complex metal oxides, bumping up the performance of solar cells, LEDs, displays and other electronic devices.
Alfven Instrument to Assess Aurora’s Aura
POKER FLAT RESEARCH RANGE, Alaska, Feb. 22, 2012 — A small rocket was launched into the aurora borealis in an attempt to discover what makes the northern lights tick.
Nanomaterial Combinations Enhance IR Photodetection
TEMPE, Ariz., Feb. 16, 2012 — Improved infrared photodetector technology that uses multiple ultrathin layers of materials should have an impact on critical applications ranging from national defense to medical diagnostics.
Information Recorded Using Only Laser-Induced Heat
YORK, England, Feb. 15, 2012 — A novel magnetic recording method allows information to be processed hundreds of times faster than with current hard drive technology.
Laser Research Provides Insight into Planet Formation
LIVERMORE, Calif., Feb. 14, 2012 — Phase changes in liquid magmas at pressures and temperatures that exist deep inside Earth-like planets could provide insight into the processes that govern planet formation.
Lasers Reveal Hidden Earthquake Damage
DAVIS, Calif., Feb. 14, 2012 — New airborne lidar equipment reveals how earthquakes change the landscape down to a few inches, and shows how earthquake faults behave.
Butterfly Wings Inspire Thermal Imagers
NISKAYUNA, N.Y., Feb. 13, 2012 — Mother Nature’s 5-million-year-old butterfly wing design, combined with a relatively new manmade material, enabled the development of a new sensor that is faster, smaller and more sensitive than today’s thermal imaging devices.
Quantum Dots Switch Neurons On, Off
SEATTLE, Feb. 13, 2012 — Light from electrons confined by quantum dots was used to activate and control targeted brain neurons, demonstrating a noninvasive method for studying cell communication and learning how specific cells may contribute to brain disorders.
EIT Extended to X-ray Regime
HAMBURG, Germany, Feb. 10, 2012 — A technique that makes atomic nuclei transparent to light at certain wavelengths was extended to the x-ray regime; it could have important implications in the fields of lasing and quantum information processing.
New Resonator Overcomes Obstacle to Ultimate Nanolaser
SAN DIEGO, Feb. 10, 2012 — Two very low power lasers that produce the smallest continuous-wave, telecommunications frequency demonstrated at room temperature to date may be a step toward the development of the “ultimate” nanolaser.
Hollow Spheres Improve PV Panels
STANFORD, Calif., Feb. 7, 2012 — Hollow spheres of photovoltaic nanocrystalline silicon exploit a peculiar phenomenon to better trap light and could dramatically reduce PV panel costs.
EUV Frequency Comb Debuts
BOULDER, Colo., Feb. 6, 2012 — The first “frequency comb” in the extreme ultraviolet band has the potential to advance nuclear clocks and to measure previously unexplored behavior in atoms and molecules.
$1.8M Grant Funds Adaptive Optics Study for Glaucoma
HOUSTON, Feb. 3, 2012 — A $1.85 million NIH grant will support a study to determine the effectiveness of adaptive optics in capturing the earliest cellular changes signaling the onset of glaucoma, which may lead to earlier diagnosis of the blinding disease.

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