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Research & Technology News
Astronomers Rise Above the Chaos
Feb 1, 1997 — GREENBELT, Md. -- Astronomers at NASA's Goddard Space Flight Center are using chaos-control technology to make an infrared semiconductor laser system more effective for spectroscopy.The term chaos can be misleading, according to Gordon Chin, head of the project team. It's actually characterized by patterns of frequency variations that occur so quickly that they are difficult to detect. The team, which includes Chin and John J. Hillman from Goddard, and Larry R. Senesac and William E. Blass from...
Bioengineering Gets a Boost
Feb 1, 1997 — ROCHESTER, N.Y. -- A $986,000 grant from the Whitaker Foundation will boost the biomedical engineering program at the University of Rochester.The grant will help fund a teaching laboratory and three new faculty members to the schools of engineering...
Crystal Simulation Shows Promise in High-Efficiency Light Bending
Feb 1, 1997 — CAMBRIDGE, Mass. -- A photonic crystal specially designed to bend light sharply with near-perfect transmission could be the key to further miniaturization of optical computer chips and lasers, according to the scientists at the Massachusetts...
European Space Agency Tests Optical Data Transmission in Space
Feb 1, 1997 — The European Space Agency (ESA) is using three telescope flight models from Carl Zeiss for its Satellite Interlink Experiment (SILEX) space research project. The mission to provide optical data links between ESA's SPOT 4 low-flying Earth-observation...
Excimer Laser Sheath Holds Promise for Pacemaker-Lead Removal
Feb 1, 1997 — Spectranetics Corp. of Colorado Springs, Colo., has filed an application with the US Food and Drug Administration for premarket approval of its excimer Laser Sheath for removal of pacemaker and implantable cardioverter defibrillator (ICD) leads. The...
Fiber Optic Probe Identifies Hazardous Contaminants
Feb 1, 1997 — WASHINGTON -- Hazardous waste site assessment and remediation are receiving increased attention these days, and a new development from the US Naval Research Laboratory (NRL) should enhance these efforts.A fiber optic infrared reflectance probe that...
Gene-Scanning Chip Promises to Accelerate Biomedical Research
Feb 1, 1997 — A small silicon chip developed at Stanford University School of Medicine uses photolithographic and genetic engineering techniques to study several thousand genes simultaneously. The thumbnail-size GeneChip, developed with Affymetrix of Santa Clara,...
Infant Technology Is More Than a Gleam in Its Developer's Eye
Feb 1, 1997 — SEATTLE -- If a photonics technology firm here has its way, soldiers, surgeons and video game fans will analyze their respective real or virtual environments in a whole new light. With a technique called virtual retinal display, computer users could...
Laser Detector Stymies Laser Weapons on High-Tech Battlefields
Feb 1, 1997 — Canadian-based The Alwend Group says its government's high angular resolution laser irradiance detector (HARLID) offers modern-day military the best defense against being targeted by laser-directed ordnance. The group is marketing the 1-Band HARLID...
Laser Gyro To Monitor Rotation of the Earth
Feb 1, 1997 — OBERKOCHEN, Germany -- Carl Zeiss has built what it calls the world's largest ring-laser gyro. Designed for measuring the Earth's rotation, the device will be installed in a subterranean cave on the Banks Peninsula in New Zealand early this year....
Laser Sensor Monitors Distant Crosswinds
Feb 1, 1997 — ATLANTA -- A laser-based sensor can measure crosswind speeds for applications such as aviation safety and meteorology, Georgia Institute of Technology researchers report.The single-ended, long-path non-Doppler laser wind sensor registers faint wind...
Liquid-Crystal-Based Device Provides Brighter Projection Display
Feb 1, 1997 — A pixel device that uses polymer-dispersed liquid crystals could be the key to improved large-scale projection display, according to scientists at Spectra Science Corp. who developed the technology. The device demonstrated brightness that the...
Lumonics Delivers Nd:YAG Marking System for Use in Japanese Pilot Plant
Feb 1, 1997 — Lumonics Corp. of Oxnard, Calif., has delivered its 300-mm laser marking system to a Japanese silicon supplier. Shin-Etsu Handotni Co. Ltd. is using the WaferMark DSC 300 on its pilot production line to hard mark its 300-mm wafers before etching and...
Polarimeter Eyed for Faster Optical Analysis
Feb 1, 1997 — A new fast-imaging polarimeter under development at Cambridge Research & Instrumentation Inc. will enable users to measure the optical anisotropy of specimens in less than 1 s. The Cambridge, Mass.-based company received a Small Business...
Quantum Dot Lasers Emerge from Semiconductor Rejects
Feb 1, 1997 — OTTAWA -- With an eye toward more powerful and smaller diode lasers, researchers at the National Research Council of Canada in Ottawa recently turned something semiconductor manufacturers consider undesirable into quantum dot lasers capable of...
Research Firm Targets More Efficient, Cheaper Satellite Solar Cells
Feb 1, 1997 — Essential Research Inc. of Cleveland is working on a high-efficiency, radiation-resistant solar cell to provide satellite power. The company plans to grow durable, inexpensive, high-quality indium phosphide solar cells on germanium substrates. The...
Standard Published for Optical Fiber Coating Removal
Feb 1, 1997 — A new standard published by the Telecommunications Industry Association (TIA), titled "Measurements of Strip Force for Mechanically Removing Coatings from Optical Fibers," quantifies the force needed to remove coatings from fibers along the...
Thin-Film Detector Shows High Response, Sensitivity for Radiation Measurement
Feb 1, 1997 — Using off-the-shelf production facilities and standard production methods, researchers working for the Canadian Defense Research Establishment have built a new radiation detector for use in the medical, nuclear and space fields, or wherever...
X-Ray Microcalorimeter Developed for Improved Materials Analysis
Feb 1, 1997 — An x-ray microcalorimeter developed by the National Institute of Standards and Technology could improve materials analysis in the semiconductor industry. The device, compatible with commercially available scanning electron microscopes, can achieve...
Alice's Restaurant at the End of the Universe
Jan 1, 1997 — INNSBRUCK, Austria -- Physicists are approaching a practical application for a remarkable property of photons, something Einstein called "spooky action at a distance." Science recently reported that researchers at the University of Innsbruck...
Chromium-Doped Crystal Shows Near-Infrared Tunability at Room Temperature
Jan 1, 1997 — Scientists at the City University of New York have grown a chromium-doped laser crystal that they say is tunable in the near-infrared spectral range at room temperature. The researchers demonstrated gain-switched, tunable operation of the Cr4...
Fiber Brings 'Live' Response from Ocean Floor
Jan 1, 1997 — TUCKERTON, N.J. -- In a scene that would make Jules Verne happy, scientists at Rutgers University and the Woods Hole Oceanographic Institute have established the first permanent fiber optic link that allows live, two-way communication with...
Firms Look for Partners in Deep-Ultraviolet Lithography Research
Jan 1, 1997 — ASM Lithography of Tempe, Ariz., and IMEC, a research and development organization in Leuven, Belgium, will collaborate on 193-nm-wavelength deep-ultraviolet lithography. The companies will work to develop advanced optical processes that produce...
High-Resolution Technology Opens the Door to New Displays
Jan 1, 1997 — SUNNYVALE, Calif. -- A fundamentally new approach to display technology may revolutionize those alphanumeric readouts on phones, microwaves, pagers and dashboards. In response to increasing demands for higher information content and higher...
Holographic Light-Diffusing Technique Could Improve Flat-Panel Displays
Jan 1, 1997 — A novel holographic light-diffusing technology promises to improve lighting in flat-panel display and specialized flashlight applications. Developed by Physical Optics Corp. of Torrance, Calif., the technique helps shape diffuse light beams by...
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