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(9,096 items)
Research & Technology News
Physics Billboard 'Enlightens' Travelers
LONDON, Nov. 6, 2012 — A vital but little-known physics equation that has led to much of the technological development of the modern world is piquing the curiosity of travelers as they make their way through West London.
Virus-Sized Laser Defies Diffraction Limit
EVANSTON, Ill., Nov. 6, 2012 — The bow tie is a popular shape for pasta and maybe soon it will be for lasers, too. Single-laser devices the size of virus particles operate at room temperature and defy the diffraction limit, thanks to a lasing cavity composed of 3-D bow-tie-shaped...
Fluorescence Microscopy Given New Power
URBANA, Ill., Nov. 5, 2012 — A new method that studies the critical process of cell transport dynamics at multiple spatial and temporal scales has revealed properties of diffusive and directed motion transport in living cells.
DNA Origami Nanolenses to Visualize Single Molecules
BRAUNSCHWEIG, Germany, Nov. 2, 2012 — Overlapping plasmonic fields, created by positioning two gold nanoparticles on DNA origami, form a nanolens that acts as a nanoantenna capable of enhancing the fluorescent emission of a single molecule, researchers in Germany report.
Self-Assembling Particles Could Advance Optics
CAMBRIDGE, Mass., Nov. 2, 2012 — Microparticles engineered to self-assemble spontaneously, much as atoms form into molecules, could lead to enhanced optical displays and speedier computer chips, investigators say.
3-D Stress Map Reveals Embryonic Heart Defects
CLEVELAND, Nov. 1, 2012 — Stresses induced in an embryonic heart by blood flow have been visualized for the first time in 3-D using an optical coherence tomography (OCT) method. The technique could provide new insight into how and why heart defects develop.
A Magnetic Field for Photons
STANFORD, Calif., Nov. 1, 2012 — 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.
Lasers improved for standoff sensing
EVANSTON, Ill. – A new resonator design that controls both wavelength and beam quality enables the purest, brightest and most powerful beams ever from a single-mode infrared quantum cascade laser. The work improves the accuracy of the devices, critical for boosting...
Plasmon wave propagates for 80 µm with no diffraction
CAMBRIDGE, Mass. — A needlelike beam of light that propagates for an unprecedented distance of 80 µm without spreading could greatly reduce signal loss for on-chip optical systems and might eventually aid development of more powerful microprocessors. The...
Record pulse provides new tool for observing quantum mechanics
ORLANDO, Fla. – The young field of attosecond science marked a significant milestone recently with the generation of the shortest laser pulse to date – 67 attoseconds. The record, achieved by Dr. Zenghu Chang and colleagues at the University of Central...
Replacing “consumer electronics” with “consumer photonics”
PHILADELPHIA – Cadmium sulfide nanowires can be used to create an all-optical photonic switch, a team at the University of Pennsylvania said. They combined the switch with others to create a logic gate for on-chip information processing. “Putting switches...
Silicon could enable mass production of quantum computing
BRISTOL, UK – A new silicon-based approach to quantum computing could make the technology easier to mass-produce. Scientists at the University of Bristol’s Centre for Quantum Photonics, leading an international collaboration, made the leap from glass-based...
Superstable laser could power atomic physics
BOULDER, Colo. – An optical resonator made of single-crystal silicon, a particularly stiff and low-noise material – instead of the traditional glass with its disordered and “soft” material structure – has enabled the creation of a laser so...
System measures limits of plasmonic enhancement
DURHAM, N.C., and LONDON – Photonic interactions have been measured for the first time on the scale of a single atom. The ability to quantify the unique properties of light gives physicists a road map to precise control of scattering in metal-based devices such as biosensors...
Wireless optical networks could make vehicles lighter
COVENTRY, UK – LED-based wireless optical networks in vehicles could significantly cut the weight of wiring under the hood, not only saving on fuel, but also allowing passengers to tap into visible or infrared spectrum bands in overhead lighting to watch movies or...
X-ray, optical wave mix probes light at atomic scale
BERKELEY, Calif. – Mixing x-ray and optical lightwaves enables observations of how light interacts with matter on the atomic scale. The capability can reveal certain properties of matter, and may enable the observation of changes during chemical reactions, such as the...
Fiber Laser Pioneer Honored with IEEE Milestone
SOUTHBRIDGE, Mass., Oct. 31, 2012 — Elias Snitzer, the father of fiber lasers and fiber amplifiers, was honored posthumously Friday by the Institute of Electrical and Electronics Engineers (IEEE) with a granite plaque across the street from the former American Optical headquarters,...
Tying Knots in Light
CANBERRA, Australia, Oct. 31, 2012 — Light can be coaxed to tie itself into knots, but under the right conditions the knot-tying can happen spontaneously, new research suggests.
New Solar Research Facility Breaks Ground
BERKELEY, Calif., Oct. 29, 2012 — Construction has begun on a 40,000-sq-ft solar energy research facility at Lawrence Berkeley National Laboratory that will aid in the quest for alternative fuels from sunlight.
DSU Breaks Ground on Optics Research Building
DOVER, Del., Oct. 26, 2012 — Delaware State University’s renowned optics program, currently involved in NASA’s Mars Curiosity rover mission, will soon have a new home.
UN Committee Endorses International Year of Light in 2015
PARIS, Oct. 26, 2012 — A resolution declaring 2015 as the International Year of Light was endorsed by the United Nations Educational, Scientific and Cultural Organization (UNESCO), and backed by 28 other nations, at the organization’s 190th session in Paris last week. Its...
Dark Matter Halos May Contain Stars
LOS ANGELES and IRVINE, Calif., Oct. 25, 2012 — 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...
Kao Named SLAC Director
MENLO PARK, Calif., Oct. 25, 2012 — After a nearly 10-month search for a new director at the SLAC National Accelerator Laboratory, Stanford University decided to promote from within, naming Associate Director Chi-Chang Kao to the position Wednesday.
Quantum Computer Recycles Photons
BRISTOL, England, Oct. 25, 2012 — 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.
Flanagan Appointed Deputy Director of STScI
BALTIMORE, Oct. 24, 2012 — Dr. Kathryn Flanagan has been appointed deputy director of the Space Telescope Science Institute (STScI), the science operations center for the Hubble and James Webb space telescopes.
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