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(9,091 items)
Research & Technology News
Laser Firms Eye Medical Markets
Jan 1, 1998 — SAN DIEGO -- New technologies are improving industrial perceptions about laser materials processing, and new markets, including medical products, are opening doors to companies that can solve manufacturing problems, according to speakers at the International Conference on Applications of Lasers and Electro-Optics in November. The conference, sponsored by the Laser Institute of America, expanded from its traditional focus on heavy industry to include sessions on laser applications in the medical...
Low-Power, Time-Domain Holography Holds Promise
Jan 1, 1998 — MENLO PARK, Calif. -- A recent demonstration of time-domain holography could dispel beliefs that holographic memories need high-power lasers to function. Holographic memories, characterized by ultrahigh storage densities, rapid data transfer rates...
Molecular 'Antenna' Captures Light
Jan 1, 1998 — Researchers from the University of Michigan at Ann Arbor and the University of Illinois at Urbana-Champaign have developed a class of dendrimer molecules that "harvest" light. The molecules have a unique, treelike structure that enables them to...
Navy's 'Dark Horse' Could Lead to Unmanned Combat Flight
Jan 1, 1998 — Scientists at the Naval Research Laboratory have demonstrated real-time, hyperspectral detection of both airborne and ground targets. The detection system, part of the laboratory's "Dark Horse" program, employs a high-resolution imager, pointing...
Near-Field Microscopes Speed Up
Jan 1, 1998 — NEW HAVEN, Conn. -- Chemically etching a near-field optical fiber probe tip has enabled researchers at Yale University to improve the scanning rate of a near-field optical microscope. The etching technique, which produces near-field tips of about 70...
Optical Gel Senses Chemicals
Jan 1, 1998 — PITTSBURGH -- By forming a functionalized gel around an array of colloidal particles, researchers have created a sensor that indicates the presence of specific chemicals by a shift in the gel's optical diffraction. Now they can use optical methods...
Photonic Crystal Portends Fiber Optics Breakthrough
Jan 1, 1998 — CAMBRIDGE, Mass. -- Researchers at the Massachusetts Institute of Technology have designed and tested a silicon device that some view as an important step toward creating fiber optic communication systems with dramatically increased efficiency and...
Photos Indicate Water on Mars
Jan 1, 1998 — ITHACA,N.Y. -- Scientists report that the more than 9500 images taken during the Mars Pathfinder mission provide strong geological evidence that water was once present on the Red Planet. A group of researchers including James Bell, a senior research...
Researchers Take Crucial Step Toward Miniature Optical Devices
Jan 1, 1998 — Two Columbia University researchers have advanced the development of miniaturized optical devices such as microlasers and implantable medical sensors. Richard Osgood and Miguel Levy bonded a 9-µm-thick sheet of magnetic garnet, a photonic...
Sand-Size Transmission Aids Space Exploration
Jan 1, 1998 — A group of scientists at Sandia National Laboratories have developed a transmission about the size of a grain of sand that could prove useful in optical telescopes and optical switching in telephone lines. The minuscule polysilicon transmission will...
Scientists Solve H 2 O Mystery
Jan 1, 1998 — For the last 50 years, scientists have sought to understand the biochemical and physical processes that take place in liquid H2O. They employed such methods as dielectric relaxation, spectroscopy and nuclear magnetic resonance, but these methods...
Software Gauges Efficiency of AR Coatings
Jan 1, 1998 — A British researcher has developed software that analyzes new antireflection coatings for optical systems. Geoff Adams, of UK-based Optical Software Co., has developed WinLens for Spindler & Hoyer -- software for designers of multi-glass...
Stabilized Laser Source Is Key to Interferogram
Jan 1, 1998 — A researcher from CSO Mesure in Grenoble, France, has produced a high-frequency laser source that could prove useful in next-generation interferometric spectrometers. Developed as part of a project to take metrology readings from space, CSO's laser...
Vienna Group Generates Coherent X-Ray Source
Jan 1, 1998 — VIENNA, Austria -- A group of researchers at the Vienna University of Technology has generated a coherent x-ray source that could pave the way for high-contrast biological imaging. The collimated x-ray beam, long-sought by legions of researchers, is...
Diffraction Brings Street Signs to Life
Dec 1, 1997 — ROSKILDE, Denmark -- A new process that impresses holographic optical elements onto polymer rolls could significantly reduce the cost of keeping roads safe at night. According to Ibsen Micro Structures developmental engineer Michael Rasmussen,...
Laser Aids Hair Restoration
Dec 1, 1997 — A carbon dioxide laser in combination with a computerized pattern generator creates recipient sites for hair grafts more effectively than traditional methods. That's the finding of Dr. Barry DiBernardo, who presented a paper advocating the use of...
Laser Helps Take Twinkle out of Stargazing
Dec 1, 1997 — LIVERMORE, Calif. -- A laser system that makes a false star glow in the Earth's upper atmosphere will help astronomers study some of the universe's faintest objects. The same phenomenon that makes stars appear to twinkle to ground-based observers...
Magnetic Field Alters Disc's Properties
Dec 1, 1997 — GRENOBLE, France -- A team of scientists has discovered a way to use a magnetic field to alter the transparency of a plastic disc. Bart van Tiggelen of the Universite Joseph Fourier and researchers from the Max Planck Institute made the discovery,...
New Sensor Combines CMOS and CCD
Dec 1, 1997 — DALLAS -- Engineers at Texas Instruments have combined the performance features of the charge-coupled device (CCD) and the manufacturing advantages of the complementary metal oxide semiconductor (CMOS) to produce what they call the bulk charge...
Pentagon's Laser Test Fails to Meet Objective
Dec 1, 1997 — When the Pentagon fired a mid-infrared laser at an orbiting US Air Force satellite in October, it failed to accomplish one of the experiment's main objectives: recording the impact. The Defense Department aimed the laser at an infrared camera...
Photonics Brings Dinosaur to Life
Dec 1, 1997 — SAN ANSELMO, Calif. -- Museums, faced with the dilemma of making their displays more interactive and paying top dollar for fossils, have turned to laser scanning as a solution to their troubles. "It's a shame, but museums are losing attendance,"...
Princeton Promises Much on Organic Lasers
Dec 1, 1997 — PRINCETON, N.J. -- It may not carry the fury of the big bang or death gene debates, but to those in the diode laser business organic lasers have sparked more than polite dinner conversation. Princeton University researchers say they have the...
Quick Screening Provides Key to New Luminescent Materials
Dec 1, 1997 — Researchers have long sought new compounds for ultraviolet-excited phosphors -- important for the development of flat panel displays and lighting. Because there are no reliable theories to predict the relation between composition and efficiency,...
Ring Laser Measures Earth's Rotation
Dec 1, 1997 — CHRISTCHURCH, New Zealand -- In an underground cave, deep within the Cashmere peninsula, the musical note E-flat has taken on special meaning. Researchers from the University of Canterbury have installed a giant ring gyroscope to keep track of...
Solid-State Diode Lasers Gain Ground
Dec 1, 1997 — Diode and diode-pumped lasers are about to find significant commercial applications, several experts on commercial and research photonics told a standing-room-only audience during a session at the Optical Society of America Annual Meeting in Long...
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