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(9,092 items)
Research & Technology News
Chirality Is Electronically Switchable
NEW YORK -- NEW YORK -- A copper-based molecule with electronically switchable optical properties promises improved display technologies and application as a switch in molecular electronics. The complex changes its apparent chirality when an electron is added or removed from its structure, causing it to strongly polarize light in almost perfectly opposite ways. James W. Canary, a professor at New York University and lead researcher, explained that chirality describes the inability to superimpose variant...
Cornell Selected to Lead Mars Mission
Sep 1, 2000 — NASA has chosen Cornell University of Ithaca, N.Y., to provide the instrumentation and to lead the science team for its next surface mission to Mars, which is scheduled for launch in June 2003. The mission will feature an updated rover similar to...
Dusty Lab May Revolutionize LEDs
PRINCETON, N.J. -- PRINCETON, N.J. -- You may think that your cleanroom should be clean, but a serendipitous bit of grime that interfered with an experiment at Princeton University could lead to the production of cheaper, higher-quality LEDs. The accident occurred in...
Head Lice Fear the Dance Floor
NEW HAVEN, Conn. -- NEW HAVEN, Conn. -- To all you lice boning up on your disco moves: Don’t count on shaking your booty long. That black light coming your way is not for your dancing enjoyment, but for helping parents find and rub you out. Coupled with a shampoo...
Holography Offers New Opportunities
SAN JOSE, Calif. -- SAN JOSE, Calif. -- A picture may be worth a thousand words, but a hologram is worth many more. Independent projects at IBM’s Almaden Research Center and NASA’s Jet Propulsion Laboratory in Pasadena, Calif., have demonstrated the use of...
Laser-Powered Chips Sample DNA
MONMOUTH JUNCTION, N.J. -- MONMOUTH JUNCTION, N.J. -- A technology using light-activated microtransponders to achieve inexpensive, high-throughput immunoassays or DNA probe assays is under development at PharmaSeq Inc. Promising flow cytometry rates, the technique may be able...
Lasers Help Power Companies Find Good Vibrations
ATLANTA -- ATLANTA -- Electric power companies may soon have a faster, safer and more effi-cient means for checking the wooden crossarms that support many high-voltage transmission power lines: a helicopter-mounted HeNe laser beam. Power companies now conduct...
Low-Cost Night-Vision System Proposed for Home Use
Sep 1, 2000 — In a study published in the June issue of Optical Engineering, scientists at National Chiao Tung University in Hsinchu, Taiwan, described the feasibility of fabricating a low-resolution thermal imaging system that the average homeowner could use for...
Lucent Developing Plastic Fiber
Sep 1, 2000 — Lucent Technologies Inc. of Murray Hill, N.J., has announced plans to develop graded-index plastic optical fiber products based on the Cytop fluoropolymer produced by Asahi Glass Co. Ltd. of Tokyo. The product line will target specialty fiber...
Microchip Laser Aims at Argon-Ions
ORLANDO, Fla. -- ORLANDO, Fla. -- A microchip laser developed as a compact excitation source for Raman spectroscopy should have laser manufacturers green with envy. The 532-nm laser produces 8 mW, and it may evolve into a suitable replacement for solid-state and...
Optical Bench Readied for NASA
Sep 1, 2000 — Composite Optics Inc. of San Diego has delivered the optical bench for NASA’s tropospheric emission spectrometer, scheduled for June 2003 launch aboard the Aura satellite. The company subjected the instrument structure to a series of shock and...
Pill-Size Camera Is Easy to Swallow
YOKNEAM, Israel -- YOKNEAM, Israel -- The concept may be a bit hard to swallow, but the camera isn’t. Given Imaging Ltd. has developed a capsule that provides high-quality video of the small intestine, an area that is otherwise impossible to image. The quality...
Scattered Light Finds Defects in Wires
MADRID, Spain -- MADRID, Spain -- Physicists in Spain and Argentina have developed a laser-based system designed to let makers of thin metallic wires detect and assess surface defects without shutting down the assembly line. The technique monitors the cone of light...
Scattering May Extend Laser Cooling
STANFORD, Calif. -- STANFORD, Calif. -- Laser cooling, also known as optical molasses, has found numerous scientific applications since its development 15 years ago, including the production of Bose-Einstein condensates, Fermi degenerate gas and more precise atomic...
Spanish Physicists Focus on Fuzz
TERRASSA, Spain -- TERRASSA, Spain -- Fuzzballs on sweaters and other garments are an inescapable fact of life. They detract from a garment’s appearance and make it look old before its time. Now, at least, researchers in Spain have discovered a way to study them...
US Air Force Studies Fiber Lasers
Sep 1, 2000 — Scientists at the US Air Force Research Laboratory at Kirtland Air Force Base, N.M., are hoping to boost the output of fiber lasers into the kilowatt range. Under the Laser Integration Technology program within the Directed Energy Directorate, the...
What’s in that Hamburger?
HONG KONG -- HONG KONG -- Hamburger lovers beware! The next meat patty you eat may not be what you think it is. But help is on the way. Inspired by a documentary exposing the widespread sale of adulterated ground beef in the US, researchers at the University of...
X-Ray Scattering Reveals Electronic Properties
STANFORD, Calif. -- STANFORD, Calif. -- An x-ray technique for studying the fundamental properties of matter could help identify new materials for semiconductor lasers. Inelastic x-ray scattering uses the high-energy x-rays produced by particles accelerated to nearly...
1.8-W Diode to Pump Fiber Amplifiers
CANBERRA, Australia -- CANBERRA, Australia -- Researchers at Australian National University have created a high-power 980-nm diode laser specially designed to pump the erbium-doped fiber amplifiers crucial to high-bandwidth short-haul optical telecommunications networks....
Dopant Level Improves Organic LEDs
Aug 1, 2000 — A team from Ludwig Maximilian Universität in Munich, Institut Ackermannweg in Mainz and Universität Potsdam, all in Germany, has announced the results of a study of organic LEDs that may boost the efficiency and output of the devices....
Glasses Make Versatile Crystals
SOUTHAMPTON, UK -- SOUTHAMPTON, UK -- Photonic quasicrystals with complete bandgaps can be made in glasses that are typically used for fiber optic telecommunications. Researchers at the University of Southampton have shown that materials with a low refractive index,...
Gold Clusters Are Optically Active
ATLANTA -- ATLANTA -- Metals, as a rule, do not display optical activity. So researchers at the Georgia Institute of Technology were surprised to find that their gold nanocrystals did so intensely and across the spectrum. Gold nanoparticles already have found...
IR Imager Uses Missile Technology
WEST LAFAYETTE, Ind. -- WEST LAFAYETTE, Ind. -- A form of infrared imaging developed by the military for heat-seeking missiles is helping researchers rapidly identify catalysts that could improve chemical manufacturing processes and pollution-control systems. The imaging...
Laser Aims to Reduce Ceramic Costs
WEST LAFAYETTE, Ind. -- WEST LAFAYETTE, Ind. -- Because of their exceptional hardness, resistance to wear and stability at high temperatures, advanced ceramics are becoming popular for precision parts in aerospace, automotive and manufacturing industries. They are also...
Laser Display Challenges Cathode-Ray Tubes
ORLANDO, Fla. -- ORLANDO, Fla. -- A new display technology is looking to upstage the cathode-ray tube. Researchers at the University of Central Florida have developed a display that features a plastic screen peppered with crystalline powders that emit different...
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July 2024
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