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(9,092 items)
Research & Technology News
Masks Team Up to Beat Light's Limits
MURRAY HILL, N.J. — The wavelength of exposure light is an inherent limitation in optical lithography. Semiconductor manufacturers are making use of shorter-wavelength lasers, larger numerical apertures and resolution-enhancement techniques to print today's tiny circuits, but these methods are still ultimately limited by the light's wavelength. Scientists at Lucent Technologies' Bell Laboratories have developed a photolithography technique that overcomes that limitation. The two-step etch process -- which uses...
NASA Readies Microscope for Space Mission
BROOK PARK, Ohio -- BROOK PARK, Ohio -- Scientists at NASA’s Glenn Research Center in Cleveland and Dynacs Engineering are adapting a microscope for the International Space Station’s fluid combustion facility. They are motorizing most of the...
Observatory Receives Fourth Mirror
Feb 1, 2000 — Optics manufacturer REOSC of St.-Pierre-du-Perray, France, formally presented in December the last of four 8.2-m primary mirrors for the European Southern Observatory’s Very Large Telescope at Paranal Observatory in Chile. The polished mirror...
Photek Produces 150-mm Image Intensifier
Feb 1, 2000 — Photek Ltd. of St. Leonards-on-Sea, UK, has announced that it has produced a prototype 150-mm-diameter zoom image intensifier, which it claims is the largest ever constructed. The device has applications in nuclear particle physics and x-ray...
Polarized Laser Light Helps Reveal Porous Structures
CAMBRIDGE, Mass. -- CAMBRIDGE, Mass. -- As a rule, nuclear magnetic resonance (NMR) imaging has relied on liquid probes because gases are too low in density to return a strong signal. Scientists at the Harvard-Smithsonian Center for Astrophysics have challenged that...
Researchers Approach Lab on a Chip
LONDON -- LONDON -- Scientists striving to miniaturize equipment used in analysis systems have gained ground with the development of an optical emission detector on a glass chip. The device is 1000 times smaller than conventional devices and uses 10,000 times...
Researchers Develop Mid-IR Room-Temperature Laser
WASHINGTON -- WASHINGTON -- Researchers from the US Naval Research Laboratory and from Sarnoff Laboratories and Sensors Unlimited, both of Princeton, N.J., have developed what they say is the world’s first room-temperature interband III-V laser diode that...
Sharp Sensor Rivals 35-mm Film
Feb 1, 2000 — Herman L. Peek and associates at Philips Semiconductors Image Sensors in Eindhoven, The Netherlands, have developed a full-frame charge-coupled device with the image quality of standard 35-mm film. The researchers presented their findings at a...
Simple Minigyro Achieves Accuracy
WILMINGTON, Mass. -- WILMINGTON, Mass. -- Measuring angular rotation is essential to the proper operation of missile guidance systems, satellites, automotive skid control and navigation systems, and other applications. Commercially available gyros can be limited in...
Space Technology Comes Down to Earth
Feb 1, 2000 — Researchers at the University of Leicester in the UK are developing an imaging system with applications in archaeology, forensics, geology, silicon chip production, and the food and automotive industries. The instrument, an imaging x-ray...
Army Lab Uses Lasers to Detect Explosives
Jan 1, 2000 — A team of researchers from the US Army Research Laboratory at Aberdeen Proving Ground, Md., described the results of a study on the application of laser photofragmentation/fragmentation detection spectrometry to energetic materials in the Oct. 20...
Detecting a Wrinkle in (Less) Time
AUSTIN, Texas -- AUSTIN, Texas -- When choosing an outfit to wear, one factor often prevails over others in the decision-making process: Which item doesn’t need to be ironed? In this scenario, what could be better than a "wrinkle-free" shirt? The textile...
Device Varies Dispersion Compensation
Jan 1, 2000 — At OECC ’99 in Beijing, researchers from Avanex Corp. of Fremont, Calif., and Fujitsu Laboratories of America Inc. of Sunnyvale, Calif., described a chromatic dispersion compensator for optical communications based on Fujitsu’s virtually...
Fiber Optic Array Provides Real-Time Gel Analysis
LUND, Sweden -- LUND, Sweden -- Capillary electrophoresis has become a useful analytical tool, with laser-induced fluorescence imaging offering improved detection. Researchers from Lund University and the Lund Institute of Technology have taken it a step further,...
Fiber Optic Sensor Measures Sea's Saltiness
MADRID, Spain — Bathers can tell that the Dead Sea is extremely salty because all they can do in it is float. Physicists at the Universidad Complutense say they have a more precise way to measure maritime salinity: a fiber optic sensor. Although the researchers...
Heat Sink Offers Better Cooling
COLUMBUS, Ohio — Microchannel heat sinks are commonly used to cool solid-state radar systems, diode lasers, and mainframe and supercomputers. They can remove heat 50 times more efficiently than conventional methods using liquid cooled cold plates. Recently, a...
Infrared Spectromicroscopy Technology Identifies Bacteria That Eat Toxic Waste
Jan 1, 2000 — Chemical and biological mechanisms had been suggested to explain the transformation of hexavalent chromium, a toxic industrial discharge, into a less dangerous trivalent form. Now scientists at the Lawrence Berkeley National Laboratory in Berkeley,...
InP Extends Fiber Transmission
Jan 1, 2000 — Bell Laboratories in Murray Hill, N.J., has demonstrated 160-Gb/s, single-channel transmission over 300 km of parent Lucent Technologies’ TrueWave RS optical fiber. Next step: expanding the system with dense wavelength division multiplexing....
IR Lasers Produce X-Ray Optics
DRESDEN, Germany -- DRESDEN, Germany -- X-rays go through almost any material without interaction, making them useful for analysis but difficult to control. X-ray scattering and diffraction are well-known techniques for investigating materials such as plastics, metals,...
Laser Ablation Shapes Precision Optics
OSAKA, Japan — Trying to precisely shape optics and achieve low wavefront distortion with conventional polishing methods can be a daunting task, particularly for optical components that are larger than 50 cm or smaller than 1 cm. For both large and small optics,...
Laser Simplifies Isotope Enrichment
ANN ARBOR, Mich. — Researchers at the University of Michigan have developed a simple and efficient means to produce films of enriched isotopes. Using a tabletop terawatt laser, the method offers a compact alternative to the traditional gaseous diffusion technique....
Micromirrors Considered for Space
Jan 1, 2000 — A team at Sandia National Laboratories in Albuquerque, N.M., is designing an infrared mirror array for NASA’s Next Generation Space Telescope, which incorporates microelectromechanical systems technology. In September, the team demonstrated a...
Microsensors Tackle Hazardous Waste
CINCINNATI -- CINCINNATI -- Researchers from the University of Cincinnati have developed a highly selective microsensor that the US Department of Energy (DoE) may use in its efforts to monitor or clean up the Hanford nuclear weapons facility in Washington state....
One Chirping Laser Sings 1022 Frequencies on a Fiber
HOLMDEL, N.J. -- HOLMDEL, N.J. -- In standard communications math, 40 lasers + 40 modulators + one fiber = 40 channels of dense wavelength division multiplexing. In Lucent Technologies’ new math, one laser + one modulator + one fiber =...
Online Mass Spectroscopy Method Makes Moves to IR
Jan 1, 2000 — Two designs are leading to online, IR matrix-assisted laser desorption/ionization mass spectroscopy of biomolecules. Kermit K. Murray, an assistant professor of chemistry at Emory University in Atlanta, and colleagues from Odense University in...
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July 2024
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