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Research & Technology News

Laser Coaxes Silica Microwires to Self Assemble
SYDNEY and PARIS, Jan. 23, 2013 — Water droplets in which silica nanoparticles are suspended can be carefully controlled with an ultraviolet laser technique that coaxes them to self-assemble into highly uniform nanowires, heralding a new generation of integrated optical devices.
Plastic Spray Coating Boosts CMOS Sensors
MUNICH, Jan. 23, 2013 — A cost-effective spray coating process that involves an ultrathin film made up of organic compounds has boosted the performance of CMOS sensors.
Nanowire Solar Cells Soak Up Sunlight
LUND, Sweden, Jan. 22, 2013 — Nanowires created from indium phosphide have shown potential for drastically improving solar cell efficiency and costs.
Optical Projection Moves from VIS to IR
UMEÅ, Sweden, Jan. 22, 2013 — A new imaging method enables optical projection tomography to be extended from the visible to the near-IR spectrum, allowing the study of different types of cells in one preparation and the use of different contrast agents. The findings could be...
Active and Passive Modes in One IR Camera
EVANSTON, Ill., Jan. 21, 2013 — A new approach that integrates active and passive infrared (IR) imaging capability into a single chip has paved the way toward lighter, simpler dual-mode active/passive cameras with lower power dissipation.
New Material Warms White LEDs
ATHENS, Ga., Jan. 21, 2013 — The cold, bluish light of current white LEDs has precluded their widespread use for indoor lighting, but a new LED prototype uses a single light-emitting material, or phosphor, with a single emitting center to produce a warm white glow that could...
Image Compressor Beats JPEG
DURHAM, N.C., Jan. 18, 2013 — Unlike jpeg algorithms, which compress an image after it is taken, a new low-profile metamaterial sensor uses microwave imaging to compress pictures as they are being recorded.
Lunar Orbiter Lasers Mona Lisa to Moon
GREENBELT, Md., Jan. 18, 2013 — NASA’s next moon mission has the acronym LADEE (Lunar Atmosphere and Dust Environment Explorer), but they’ve already sent a lady to the moon — or at least the image of one.
Graphene Plasmonics Beat the Drug Cheats
MANCHESTER, England, and MARSEILLE, France, Jan. 17, 2013 — A simple optical system using graphene plasmonics can potentially see a single molecule and can analyze its composition within minutes. The advance could lead to more sensitive drug testing of professional athletes.
Intel, FB Team to Move Photonics into Data Centers
SANTA CLARA, Calif., Jan. 17, 2013 — Intel Corp. is collaborating with Facebook to define the next generation of rack technologies used to move huge amounts of information through the world’s largest data centers, the companies announced this week at the Open Compute Summit in...
Webb Telescope Completes Optical Milestone
BOULDER, Colo., Jan. 17, 2013 — NASA’s James Webb Space Telescope aft-optics subsystem (AOS) has passed performance testing at Ball Aerospace & Technologies Corp., setting another optical milestone.
Device Tosses Out Unusable PV Wafers
GOLDEN, Colo., Jan. 16, 2013 — Manufacturers need better, less expensive ways to make photovoltaics, and now a solar furnace that kicks out unusable silicon wafers before they become solar cells could potentially save the industry billions of dollars annually.
Light-Activated Hydrogel Repairs Cartilage
BALTIMORE, Jan. 15, 2013 — Runners and knee pain sufferers, take heed. A new squishy biomaterial called a hydrogel could help repair damaged cartilage when activated with light, giving those achy joints some relief.
Multijunction Solar Cell Design Could Exceed 50% Efficiency
WASHINGTON, Jan. 15, 2013 — A lattice-matched, triple-junction solar cell proposed by an international team of scientists has the potential to break the 50 percent conversion efficiency mark, a goal in multijunction photovoltaic development.
How to Treat Heat Like Light
CAMBRIDGE, Mass., Jan. 14, 2013 — A new technique makes it possible to manipulate heat as if it were light, an advance that could improve thermoelectric devices, create thermal diodes or achieve thermal cloaking.
Laser ‘Pill’ Boosts Esophagus Imaging
BOSTON, Jan. 14, 2013 — Physician may soon have an easy and painless way to screen the esophagus for precancerous cellular changes, thanks to a pill-size device that provides detailed imaging of the upper gastrointestinal tract.
4096-Emitter Phased Array Lets Chips Steer Light
CAMBRIDGE, Mass., Jan. 10, 2013 — An array of 4096 optical antennas built on a single silicon chip can steer light in arbitrary directions, holding promise for applications such as holographic televisions and medical imaging devices that can be threaded through tiny blood vessels,...
Cirac, Zoller Share 2013 Wolf Prize in Physics
GARCHING, Germany, and INNSBRUCK, Austria, Jan. 10, 2013 — Theoretical physicists Ignacio Cirac and Peter Zoller are among eight scientists named recipients of the 2013 Wolf Prize from the Wolf Foundation in Israel.
USouthampton Optimizes the Strength of Glass Nanofibers
SOUTHAMPTON, England, Jan. 10, 2013 — The discovery that silica nanofibers are more resilient when their size is decreased has resulted in creation of the strongest, lightest-weight silica nanowires ever created. The findings could transform the aviation, marine and security industries.
3-D Color X-ray Spots Corrosion, Cancer and Contraband
MANCHESTER, England, Jan. 9, 2013 — A camera that takes powerful 3-D color x-ray images in near real time and without a synchrotron x-ray source can identify the composition of scanned objects. This capability could significantly improve airport security screening, medical imaging and...
Photodetector IDs Individual Vortex Beams
CAMBRIDGE, Mass., Jan. 9, 2013 — A new device that simply adds a metallic pattern to the window of a commercially available, low-cost photodetector could contribute to a major increase in the rate of future optical communications.
Fireflies Mimicked for Brighter LEDs
NAMUR, Belgium, SHERBROOKE, Quebec, and GRENOBLE, France, Jan. 8, 2013 — The twinkling of fireflies in the night sky inspired an international team of scientists to take the flashes on bioluminescent insects’ abdomens and apply them to a coating to increase LED efficiency. Their method proved more than one and a half...
For Highly Efficient Organic PV Cells, Size Matters
RALEIGH, N.C., and BERKELEY, Calif., Jan. 8, 2013 — For highly efficient polymer-based organic photovoltaic cells — which are far less expensive to manufacture than silicon-based solar cells — size matters.
New Detector Reads Photons Better
COLLEGE PARK, Md., Jan. 7, 2013 — A photodetector developed at the Joint Quantum Institute (JQI) has established a new standard for reading quantum information with a minimum of uncertainty, beating the previous limit by a factor of four.
Lasers Tune Common Nanoparticles to Near-IR Wavelengths
HOUSTON, Jan. 4, 2013 — Diverse types of ordinary nanoparticles can be selectively heated on demand by short laser pulses at near-infrared wavelengths. The technique could advance the use of these particles in medical and industrial applications.

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