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Research & Technology News
Lasers Cool Gas Clouds
COPENHAGEN, Denmark, March 5, 2012 — A new way to cool semiconductor membranes paradoxically uses lasers to bring their temperature down by heating them up, paving the way to efficient cooling of components for future ultrasensitive sensors and quantum computers.
Uncertainty in Quantum Measurements Reduced
ATLANTA, March 5, 2012 — In the weird realm of quantum physics, it is not possible to accurately specify the momentum of an object and its exact position. For decades scientists have been able to cheat this limitation through a process called “squeezing.” Now that process...
Workhorse Mars Imager Marks 10 Years
TEMPE, Ariz., March 2, 2012 — NASA’s Mars Odyssey orbiter has now been circling Mars for 10 years, and its main camera — the thermal emission imaging system (THEMIS) — has taken more than 45,000 images of the Red Planet.
2-million-degree matter reveals the structure of stars
MENLO PARK, Calif. – Using the world’s most powerful x-ray laser, scientists have created and probed a 2-million-degree piece of “hot, dense matter” in a controlled way for the first time. This is a significant step forward in understanding the most...
Amorphous silicon makes better optical fibers
COLLEGE PARK, Pa. – A first-of-its-kind technique deposits a noncrystalline form of silicon into the long, ultrathin pores of optical fibers, making more flexible and efficient fibers. This method uses high-pressure chemistry to make well-developed films and wires from...
Bioluminescence in Marine Bacteria Brought to Light
JERUSALEM, March 1, 2012 — Although it was known previously that many sea creatures glow — a phenomenon known as bioluminescence — the benefits of this biological light production have been unclear — until now.
Breaking wavelength limits enables chips with finer features
CAMBRIDGE, Mass. – A new way to break through wavelength-related limits to feature size in state-of-the-art silicon chips could enable further leaps in computational power. The microchip revolution has seen a steady shrinking of features on silicon chips, packing...
Lens Produces 3-D Images in Seconds
GLASGOW, Scotland, March 1, 2012 — An innovative confocal lens behind a new microscope produces results in seconds rather than hours and could dramatically accelerate drug development.
Masking moments in time by splitting light
ITHACA, N.Y. – A technique that employs a split-time lens to break light into its slower (red) and faster (blue) components creates a temporal gap, albeit at the picosecond timescale, engineers at Cornell University have reported. The optical fiber-based...
One-step process turns carbon fibers into graphene QDs
HOUSTON – Common carbon fiber can be turned into graphene quantum dots (QDs) in a one-step chemical process that is much simpler than established techniques. This discovery could prove useful for optical, biomedical and electronic applications. ...
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...
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.
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