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Research & Technology News
FORTE Satellite to Record Lightning Strikes
Oct 1, 1997 — The FORTE satellite is orbiting Earth after a successful launch on Aug. 29. The satellite, which is a joint project of Los Alamos National Laboratory and Sandia National Laboratories in New Mexico, will test ways of detecting illegal nuclear weapons tests and monitoring lightning strikes on Earth. Onboard FORTE is a coarse optical imager with a 10 3 10-km ground resolution for lightning flash location (500 fps) and a fast photodetector for recording individual light curves. The all-composite...
FTIR Examines Engine Deposits
Oct 1, 1997 — CHESTER, UK -- Collaborators from Queen's University in Kingston, Ontario, Canada, and the Shell Research and Technology Centre Thornton in Chester have combined chemical separation with Fourier transform infrared (FTIR) spectroscopy to examine...
Holographic Reflector Provides Whiter, Brighter LCDs
Oct 1, 1997 — CAMBRIDGE, Mass. -- Scientists at Polaroid Corp. have developed a holographic reflector that promises to make color LCDs whiter and brighter. The secret lies in a transmission hologram that sits behind an LCD and reflects ambient light to produce a...
Laser maker aims at paparazzi
Oct 1, 1997 — MARCOUSSIS, France -- While the world's wrath turned on the paparazzi in the wake of the death of Diana, Princess of Wales, one French laser maker has done something about it. Photographers skulking around hotels or lying in wait to ambush...
Lasers Improve Uranium Enrichment
Oct 1, 1997 — LIVERMORE, Calif. -- Nuclear energy provides about 20 percent of the electricity used in the US, but separating uranium isotopes for power generation has been a power-hungry task itself -- until lasers offered a new method. To fuel nuclear reactors,...
Los Alamos Researchers Use Protons to Photograph Detonation Waves
Oct 1, 1997 — For the first time, scientists have used a technique known as proton radiography to image a dynamic experiment. Researchers at Los Alamos National Laboratory's Neutron Science Center sent a proton beam from a linear accelerator through a special...
MCI Tests Hitachi Telecom Optical Cross-Connect Systems
Oct 1, 1997 — MCI has begun trials of a system from Hitachi Telecom that enables the complex restoration of high-speed transmission routes on optical networks. The MCI-Hitachi application employs five optical cross-connect systems deployed at various nodes in...
Microwaves Take the Red out of Rubies
Oct 1, 1997 — Researchers at Wayne State University in Detroit have used a magnet and a shower of microwaves to reduce the redness of rubies and increase their transparency. Although the method, called electromagnetically induced transparency, already had proved...
NASA Unveils Advanced X-Ray Telescope
Oct 1, 1997 — A team of Eastman Kodak engineers completed its next-generation x-ray telescope for NASA's new Advanced X-Ray Astrophysics Facility. Slated for launch in August 1998, the telescope will be a key component in the space agency's string of space...
NIST Develops Stable Optical Retarder
Oct 1, 1997 — Scientists at the National Institute of Standards and Technology's (NIST) Optoelectronics Div. have developed a stable linear optical retarder for use as a calibration reference. Optical retarders, known as wave plates, are critical for polarization...
Polymer could be key to faster optical switching
Oct 1, 1997 — SALT LAKE CITY -- Researchers have developed a technique that uses a polymer to create an ultrafast, exciton-based optical switch that operates 10 times faster than current technology. Today optical switches apply an electric field to an inorganic...
Raman Spectroscopy Could Simplify Pollution Monitoring
Oct 1, 1997 — COLUMBIA, Mo. -- Power plants must continuously track the amount of carbon monoxide, sulfur dioxide and nitric oxide that emit from their smokestacks. There usually is a separate detection system for each pollutant, but research at the University of...
Researchers Bend X-Rays
Oct 1, 1997 — A pair of Harvard University researchers have discovered a way to manipulate the direction of an x-ray beam, an advance that could someday lead to an improved x-ray laser. Normally, x-rays pass through ordinary optical lenses without bending, but...
Researchers Demonstrate High-Power, Aluminum-Free Mid-IR Laser
Oct 1, 1997 — Scientists at Northwestern University's Center for Quantum Devices in Evanston, Ill., have demonstrated an aluminum-free diode laser that emits up to 3 W at 3.2 µm. In comparison, similar aluminum-free diode lasers have a maximum output of 100...
Researchers fired up about infrared alarm
Oct 1, 1997 — WEST LAFAYETTE, Ind. -- The old adage "Where there's smoke, there's fire" could give way to "Where there's flickering infrared radiation, there's fire," if researchers at Purdue University have their way. They have developed a fire detection device...
Researchers Grow Ultrapure Crystals in High-Vacuum System
Oct 1, 1997 — Scientists have long known that the fewer impurities there are in a semiconductor material, the faster electrons can travel through it. Impurities act as roadblocks, scattering and reducing their speed. Recently a team of researchers led by Mordehai...
Researchers Patent Handheld Probe
Oct 1, 1997 — SEATTLE -- For more than 15 years, scientists have fine-tuned a technique that determines the presence and concentration of chemicals by analyzing reflected light. Known as surface plasmon resonance, the technique is useful for detecting pollution...
Robomower cuts grass, misses dog
Oct 1, 1997 — GAINESVILLE, Fla. -- The hours of sweaty, dusty, laborious lawn mowing may soon be over, thanks to a robotic lawn mower under development at the University of Florida's Machine Intelligence Lab. Using a high-tech combination of radio, sonar and...
Scientists Construct Model to Illustrate Behavior of Optically Excited Materials
Oct 1, 1997 — A group of researchers based at the University of Rochester and led by Shaul Mukamel has developed a set of theoretical models that illustrate how properties of both small and large molecules change when optically excited. Up until this point,...
Sensor reveals steak freshness
Oct 1, 1997 — SWANSEA, UK -- Scientists have developed an inexpensive thin-film oxygen sensor with emission bands in the visible region that fluoresces under a simple UV light source. The sensor could have widespread applications in detecting oxygen contamination...
Sensors Made Light-Sensitive
Oct 1, 1997 — The Consumer Systems Group of the Motorola Semiconductor Products Sector in Chandler, Ariz., and Eastman Kodak in Rochester, N.Y., have developed a tiny filmless camera using Motorola's patented ImageMOS technology. ImageMOS is used to produce...
Anemometer Adapted for Reactors
Sep 1, 1997 — PITTSBURGH -- A device that measures steam velocity in high-pressure, high-temperature environments could be key to ensuring the safety of nuclear reactors within their core. In a collaboration among Westinghouse's Science & Technology Center,...
Germans Measure Quantum States of Squeezed Light
Sep 1, 1997 — KONSTANZ, Germany -- More than a decade ago, scientists discovered a new state of light that, if harnessed, promised to increase the sensitivity of interferometers and other photonic instruments. There was only one problem: "Squeezed light" existed...
Holographic Camera Users Wanted
Sep 1, 1997 — MD Diffusion of Schiltigheim, France, is looking for volunteers who use holographic cameras to test the company's new silver-halide (AgBr) emulsion films. The company's goal is to develop the halide films, which offer fine-grain emulsion, and...
Jellyfish Genes Eyed for Optical Storage
Sep 1, 1997 — SAN DIEGO -- For the next generation of optical storage technology, scientists at the University of California are looking to the sea. A report published in Nature describes newly discovered properties of the green fluorescent protein that gives...
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