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Research & Technology News

Photonics Pioneer Tingye Li Dies
BOULDER, Colo., Jan. 4, 2013 — Tingye Li, renowned for his contributions to lightwave technology and optical fiber communications, died Dec. 27, 2012. He was 81.
Ambient Temperature Work Advances Optical Clock
BRAUNSCHWEIG, Germany, Jan. 3, 2013 — An optical clock with neutral strontium atoms is considered a strong candidate for the definition of a “new” second, thanks to scientists who have measured, for the first time, the most important uncertainty factor: ambient temperature.
Queen Knights Fiber Laser Pioneer
SOUTHAMPTON, England, Jan. 3, 2013 — Professor David N. Payne, the man behind the technology we use every day when we surf the Internet, make mobile phone calls or draw money from an ATM, now has another feather added to his cap: He has been knighted in the Queen’s New Year Honours...
Rise of the Boson-Sampling Computer
OXFORD, England, and ST. LUCIA, Australia, Jan. 2, 2013 — Despite the widespread research on quantum computing, nobody has built a machine that uses quantum mechanics to solve a computational problem faster than a classical silicon-based computer. Now scientists from universities in England and Australia...
3-D bow-tie nanolaser defies diffraction limit
EVANSTON, Ill. – Nanolaser devices operating at room temperature defy the diffraction limit, thanks to a lasing cavity composed of 3-D bow-tie-shaped metal nanoparticle dimers designed by researchers at Northwestern University. The diffraction limit has been a...
Dark matter halos may contain stars
LOS ANGELES and IRVINE, Calif. – Stars kicked to the edges of space during violent collisions and mergers with other galaxies can get tossed into large, invisible cocoons of dark matter, which might explain why astronomers say they see more light in the universe than it seems they...
Imparting bonds, directional bonds
CAMBRIDGE, Mass. – Colloidal particles have been forced to interact in specific ways that mimic the connectivity of atoms in molecules, greatly increasing the sophistication of structures that can be built from smaller components. A team from New York University,...
Most advanced giant telescope mirror completed
TUCSON, Ariz. – The most challenging astronomical mirror ever made – 10 times more powerful than any other large mirror – has been completed for a giant telescope that will explore star formation, black holes and planets in the early universe. Engineers...
Nanocrystals ramp up hydrogen production
ROCHESTER, N.Y. – Adding nanocrystals can make the light-driven production of hydrogen more robust and cost-effective, a team at the University of Rochester discovered. The work advances what is sometimes considered the “Holy Grail” of energy science:...
Optical accelerometer could transform microelectronics
PASADENA, Calif. – An ultrasensitive miniature optical accelerometer uses laser light rather than electrical circuits to gauge movement, a change that could transform the microelectronics industry. The optical cavity of the accelerometer, developed at California...
Quantum computer recycles photons
BRISTOL, UK – New demonstrations show it is possible to recycle the photons inside a quantum computer so that quantum factoring can be achieved using only one-third of the particles originally required. University of Bristol scientists recycled one of the photons...
Quantum mystery of light revealed
BRISTOL, UK, and NICE, France – A unique setup involving an integrated photonic quantum chip in a quantum beamsplitter is helping to answer one of the most fundamental questions in physics: Is light made of waves or particles? Debates on the particle-wave theories of light have...
Sensor reads single photons ultrafast
DUISBURG, Germany – In imaging, every single photon counts. Now, thanks to an ultrasensitive sensor, individual photons can be read within a few picoseconds, yielding high-quality images even in extremely low-light situations. Fraunhofer Institute for Microelectronic...
Superparticles shaped from nanorods
GAINESVILLE, Fla. – A new technique for growing complex superparticles from self-assembling nanorods could create a new generation of polarized LEDs. Joining nanoparticles creates new materials with [enhanced] collective properties. Such materials could revolutionize...
Synthetic magnetic field directs photons
STANFORD, Calif. – A photonic crystal device that tames the flow of free-moving photons with synthetic magnetism could enable scientists to precisely steer light in any direction. The process breaks a key law of physics known as the time-reversal symmetry of light....
Tying knots in light
CANBERRA, Australia – Light can be coaxed to tie itself into knots, but new research suggests that the knot-tying can happen spontaneously – under the right conditions. Australian National University physicists have produced a model from physics and mathematical...
Photons Sense Each Other
COPENHAGEN, Denmark, Dec. 28, 2012 — Photons can “sense” each other and coordinate their separate paths through a complex material, new research from the Niels Bohr Institute shows.
Peel-and-Stick Solar Cells Add More than Flexibility
STANFORD, Calif., Dec. 27, 2012 — Unlike their stiff, inflexible cousins, new peel-and-stick thin-film solar cells can be peeled off like Band-Aids and stuck to virtually any surface, from paper to windowpanes. Unlike standard thin-film photovoltaic (PV) cells, the peel-and-stick...
Light Turns to Sound, then to Scalpel
ANN ARBOR, Mich., Dec. 26, 2012 — Converting light to sound with a nanotube-coated lens can create finer ultrasound waves than ever before, and the new optoacoustic technique could someday be honed to create an invisible blade for noninvasive — and maybe even painless — microsurgery.
Laser Technique Reveals How Ear Amplifies Sound
NEW YORK, Dec. 20, 2012 — When illuminated by an ultraviolet laser, a newly developed photonic drug has been shown to inactivate prestin, a motor protein in the ear, revealing how the cochlea amplifies sound.
Photonic FEL Enables Better Drug Profiling
ENSCHEDE, Netherlands, Dec. 20, 2012 — The combination of a free-electron laser and a photonic crystal enables better “fingerprinting” of a drug than is possible via chemical analysis.
iTube Detects Allergens via Cellphone
LOS ANGELES, Dec. 19, 2012 — Want to avoid blowing up like a balloon eating prepackaged food that may contain harmful food allergens? Well, thanks to a smartphone application that can test food samples for life-threatening allergens on the spot, you can do just that.
Nanomechanical Fiber Goes Beyond Light Transmission
SOUTHAMPTON, England, Dec. 19, 2012 — A new dual-core optical fiber that can perform the functions of signal switches, routers and buffers by applying a minute amount of mechanical pressure could significantly enhance data processing and perform sensing functions in electronic devices.
Delicate Systems Observed with Quantum Physics
BARCELONA, Spain, Dec. 18, 2012 — Groups of photons prepared in certain quantum states can noninvasively probe ultrasensitive objects such as individual atoms or living cells, overcoming the standard quantum limit for the first time.
Light Triggers Biochemical Reactions
HOUSTON, Dec. 18, 2012 — Biochemical reactions can now be remotely triggered on demand, thanks to a new technique that turns light into heat at the point of need on the nanoscale.

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