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(38,293 articles)
Popular News
Epichem Produces Mid-IR Laser Diodes and LEDs
Apr 1, 2000 — Wirral, UK-based Epichem Ltd. has announced that it has fabricated mid-IR LEDs and laser diodes with its Admiral Consortium partners Aixtron AG, RWTH Aachen, Université Montpellier II and the IP-Czech Academy of Science. The Sb-based devices emit in the 3.3- to 4.5-µm range, which is suitable for applications in environmental sensing and the noninvasive biological monitoring of toxins and contaminants such as CO2 and CH4. The consortium used a variant of metallorganic vapor phase...
Far-Side Observation Predicts Solar Storms
Apr 1, 2000 — Astrophysicists from Solar Physics Research Corp. in Tucson, Ariz., and NorthWest Research Associates in Boulder, Colo., have developed a technique that may enable scientists to forecast solar storms more than a week in advance. Reporting in the...
Lasers Continue Across Nuclear Fission Threshold
DIDCOT, UK -- DIDCOT, UK -- Scientists at the Rutherford Appleton Laboratory have demonstrated that today’s powerful lasers can replace nuclear accelerators in some experimental studies of nuclear and plasma physics. Along with more general experiments,...
Acousto-Optics Detects Fluorescence
STUTTGART, Germany -- STUTTGART, Germany -- A team of physicists at the University of Stuttgart has captured time-resolved images of collapsing microbubbles in water. The researchers used a sensitive, high-speed streak camera to study the dynamics of the light and shock...
MCI WorldCom Tests Optical Network
Apr 1, 2000 — The OPTera 1600G optical amplification system and OPTera LH platform from Nortel Networks, headquartered in Brampton, Ontario, Canada, were put through their paces in a commercial live trial by MCI WorldCom on a span linking Dallas and Longview,...
Researchers Produce Molecular Condensate
Apr 1, 2000 — A team from the University of Texas in Austin reported in the Feb. 11 issue of Science that it had created a Bose-Einstein condensate of rubidium molecules. Theorists have predicted that the condensates may exhibit phenomena such as molecular...
Nitres Reports High-Efficiency LEDs
Apr 1, 2000 — Researchers from Nitres Inc. of Westlake Village, Calif., have announced that they have developed an InGaN-based LED with a quantum efficiency of 20 percent. The near-UV/violet diode displays 405-nm emission, and has an output of 12 mW at 20 mA and...
Advantages of Two-Photon Imaging
BUFFALO, N.Y. -- BUFFALO, N.Y. -- During the past decade, photon scanning tunneling microscopy has achieved resolution better than 100 nm, overcoming the optical diffraction limits. Recently, scientists at the State University of New York at Buffalo developed a...
Quantum Database Speeds Searches
Apr 1, 2000 — A potential advantage of storing information in the quantum phase of atoms is the speed of data retrieval. Theorists proposed in 1997 that a search algorithm could locate data in an N-state system in (root of)N steps, rather than N/2 steps under...
Quantum Dots Aim to Be Smart Pixels
SANTA BARBARA, Calif. -- SANTA BARBARA, Calif. -- Scientists at the University of California reported the development of a smart pixel device based on quantum dots that can collect, store and retrieve optical information in a single efficient unit. Optical...
Raman Method Identifies Pathogens Quickly
ROTTERDAM, Netherlands -- ROTTERDAM, Netherlands -- Raman spectroscopy and a confocal microscope may enable medical laboratories to dramatically reduce the time it takes to identify microorganisms so that doctors can make the right diagnoses. Researchers at Erasmus...
Autonomous Robot Finds Meteorites
PITTSBURGH -- PITTSBURGH -- A four-wheeled robot named Nomad recently made history in Antarctica by autonomously searching for and classifying meteorites. The expedition was a collaboration between researchers at Carnegie Mellon University’s Robotics...
Spectroscopy Reveals Fluorine’s Role in Rocket Propellant
CHAMPAIGN, Ill. -- CHAMPAIGN, Ill. -- A high-speed CCD camera and spectrometer played an important part in analyzing how fluorine gas enhances the combustion of boron in propellants -- an advance that could have an impact on the development of more energetic...
Teen’s Work on Laser Earns Semifinal Berth
Apr 1, 2000 — Aman Narang, a 17-year-old senior at The Harley School in Brighton, N.Y., thought that the computer model he was asked to develop at an eight-week summer program at the University of Rochester would be just busywork. Now it has earned him a...
IR Telescope Planned for Paranal
Apr 1, 2000 — The UK Visible and Infrared Survey Telescope project announced that it hopes to install a wide-angle telescope for the European Southern Observatory’s Very Large Telescope at Paranal Observatory in Chile. The 4-m survey telescope will be...
Quantum-Well Lasers are Suited to Trace Analysis
Apr 1, 2000 — A team from Université Montpellier II in Montpellier, France, Laboratoire Central de Recherche in Orsay, France, and Université Ibnou Zohr in Agadir, Morocco, have described the production of high-temperature quantum-well lasers that...
Ultrafast Diffraction Reveals Melting
Apr 1, 2000 — An experimental setup by researchers from the University of California, San Diego, in La Jolla, and Universität Essen and Universität Hannover, both in Germany, has allowed them to detect and monitor the nonthermal melting of germanium by...
Water down the Drain Leads to Black Holes in the Lab
Apr 1, 2000 — Archimedes, the famous story goes, cried, "Eureka!" and leapt from his overflowing bathtub, having discovered the principle of buoyancy. But the drain has much to offer, too. Physicists Ulf Leonhardt and Paul Piwnicki of the Royal Institute of...
Spectroscopy Finds Worm Tunnels in Apples
MILAN, Italy -- MILAN, Italy -- Worms that make their homes in apples may be facing a new enemy. Physicists have developed a spectroscopy-based instrument to characterize the inside of the fruit, identifying apples with worm tunnels, for example, for easy sorting...
Approaching Continuous X-ray Laser
BELLATERRA, Spain -- BELLATERRA, Spain -- A team of physicists led by Ramón Corbalán at the Universitat Autònoma de Barcelona has developed a theoretical model that promises to meet one of the great challenges of modern physics: continuous emission...
National Instruments, Coreco Settle Patent Dispute
Apr 1, 2000 — Austin, Texas-based National Instruments Corp. announced that it had reached an agreement with Coreco Inc. of St.-Laurent, Quebec, Canada, in a patent infringement dispute regarding National Instruments’ LabView graphical application...
OSA Reports a Hit with OFC 2000
Apr 1, 2000 — The Optical Society of America (OSA), the managing society of the Optical Fiber Communication Conference, said that this year’s show was the largest yet. OFC 2000, which was held March 5 through 10 in Baltimore, had an estimated attendance of...
Premier Laser Files for Chapter 11
Apr 1, 2000 — Irvine, Calif.-based Premier Laser Systems Inc. filed a voluntary petition for protection and reorganization under Chapter 11 of the Bankruptcy Code in the US Bankruptcy Court in Santa Ana, Calif. The company said the move follows its liquidity...
SDL Plans Acquisition of Queensgate
Apr 1, 2000 — SDL Inc. of San Jose, Calif., announced a $210 million agreement under which it will purchase Queensgate Instruments Ltd. of Bracknell, UK. SDL will offer the company $3 million in cash and $57 million in stock, with the additional...
TRW Accused of Falsifying Test Data
Apr 1, 2000 — Nira Schwartz, a former senior engineer at TRW Inc.’s Space Group in Redondo Beach, Calif., said the company had knowingly and falsely misrepresented the performance of its discrimination algorithm for an antimissile system. In 1996, Schwartz...
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