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Sensors & Detectors News
Optical Fiber Measures Turbulence
Mar 1, 1998 — A team of physicists from the University of Pittsburgh and the University of Bordeaux, France, has demonstrated a fiber optic device that measures the two-dimensional turbulence of fluids quickly and inexpensively. This development could simplify the study of fluid mechanics, medicine and manufacturing processes. Vorticity is a property of fluids in which the liquid swirls around a central point like a whirlpool. In a study published in Physical Review Letters, researchers described how the...
Photonic Technique Helps Fight the War Against Cancer
Mar 1, 1998 — Photonic devices and techniques such as lasers and high-tech imaging have become well-known weapons in the war against cancer, heart disease and numerous other human afflictions. A team of scientists at Montreal Neurological Institute at McGill...
Process Makes Single-Crystal Diamond a Reality
Mar 1, 1998 — LMA Inc. has developed a process that grows single-crystal diamond that has performed significantly better than conventional polycrystalline diamond in tests, enabling a host of photonic applications from advanced diode lasers to UV-transmissive...
Raytheon Amber Closes Facility, Merges with Hughes
Mar 1, 1998 — Raytheon Amber, a manufacturer of infrared focal plane array technology, plans to close its facility here and consolidate operations in what was formerly the Hughes Santa Barbara Research Center. The move comes as part of a widespread restructuring...
Shipments of Photonic Components on the Rise
Mar 1, 1998 — Increased demand for personal computers and the growth of the Internet are two factors accounting for worldwide shipments of photonic components that exceeded $7.1 billion in 1997, an increase of 10 percent from the previous year. Market watchdog...
Spectroscopy Advance Targets Industrial Applications
Mar 1, 1998 — Industry has been slow to accept laser-induced breakdown spectroscopy for chemical analysis because of the technology's inherent signal instability and because it measures relative, rather than absolute, concentrations of trace elements. However,...
Avionics Looks to Photonics to Watch Turbulent Skies
Feb 1, 1998 — When commercial flights run into turbulence, the result is usually nothing more than spilled drinks and jostled nerves. However, as the recent incident on United Airlines Flight 826 revealed, sometimes the effects of turbulence can be deadly....
Camera Catches Invisible Fires
Feb 1, 1998 — Anyone would agree that an undetected, uncontrolled fire is a menace that leaves disaster and destruction in its wake. When the fire happens to be invisible, as is the case with hydrogen fires, immediate detection is imperative. At the John C....
Fiber Gratings Affect Noise of Semiconductor Lasers
Feb 1, 1998 — PASADENA, Calif. -- Researchers at the California Institute of Technology's department of applied physics have found a way to manipulate the noise intensity of a semiconductor laser using fiber Bragg gratings -- an advance that could lead to...
Holography Accurately Measures Velocity
Feb 1, 1998 — WEST LAFAYETTE, Ind. -- Scientists at Purdue University have developed a convenient method for measuring the velocity of an object. It could prove particularly useful for remote sensing in manufacturing. Just as a strobe light makes a moving object...
Laser Vision Aids Robotic Welders
Feb 1, 1998 — PARIS -- Shipbuilding plants have sought welders with top-notch skills for years. Now, thanks to photonics, a new breed of welder -- the robotic kind -- could rival humans in expertise and efficiency. The French Welding Institute developed RoboKid,...
Modular Detectors Advance Protein Crystallography
Feb 1, 1998 — The change of a single atom on a protein that regulates the molecular reading of our genetic code can trigger the onset of cancer. To learn how these and other molecular processes work, scientists study the three-dimensional atomic structures of...
Multiplexed Sensors Monitor Bridge Structure, Materials
Feb 1, 1998 — The Taylor Bridge, which spans the Assiniboine River west of Winnipeg, Man-itoba, Canada, is a "smart structure." The two-lane 165.1-m bridge is outfitted with 66 fiber optic sensors and leading-edge calibration and measurement systems designed to...
Optical Materials Market Growth Predicted
Feb 1, 1998 — The Business Communications Co., a market research firm based in Norwalk, Conn., has released a review of the optical materials and engineering industry, projecting an average annual growth rate of 5.9 percent for optical materials despite military...
Rockwell Eyes Digital Imaging Market
Feb 1, 1998 — NEWPORT BEACH, Calif. -- Rockwell Semiconductor Systems has entered the battle for OEM digital imaging market share armed with five new sensors and a history of military and space imaging solutions. With that applications pedigree, you might think...
Diffuser Clarifies Cloud Studies
Jan 1, 1998 — LAMONT, Okla. -- Several design improvements including a reflective instead of transmissive light diffuser panel and fiber optic probe should help the US Department of Energy (DoE) better understand how radiation in the atmosphere affects weather...
Diode Laser Finds Home Aboard Columbia
Jan 1, 1998 — The video guidance sensor aboard the space shuttle Columbia featured eight fiber-coupled diode lasers as its essential components. The fiber-coupled lasers, manufactured by Opto Power Corp. of Tucson, Ariz., helped scientists from the Marshall Space...
IR Cameras Save the Ship
Jan 1, 1998 — When your million-dollar racing yacht falls from a crane, how do you evaluate unseen damage? Thomas Jones, vice president and senior engineer at Industrial Quality, has developed a creative solution to just such a problem. Using space heaters and an...
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...
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...
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...
X-ray Detectors:
Jan 1, 1998 — Amorphous Silicon x-ray detectors are on the verge of revolutionizing medical imaging technology. Although laboratory prototypes have been available for a few years, the technology has matured to the point of mass production. Within the next year,...
Consortium to Deliver Optical Materials Standards
Dec 1, 1997 — GAITHERSBURG, Md. -- UV lithography, IR imagers and spectroscopy are just a few of the industries that could benefit from a consortium proposed by the National Institute of Standards and Technology (NIST). The Optical Properties of Materials...
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...
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