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Sensors & Detectors News
Photonics Solves the Wafer Temperature Problem
Jun 1, 1997 — SANTA CLARA, Calif. -- As a semiconductor wafer wends its way through the fabrication process it passes through several stages where thermal processing plays a key role.Conventional techniques require that manufacturers stop the process, remove the wafer from the fabrication process and make a measurement off line.Now a photonic technique developed by Luxtron and Lucent Technologies promises to bring an end to start-and-stop thermal measurements. In doing so, it should significantly reduce the...
Ring Monitors Homebound Patients
Jun 1, 1997 — CAMBRIDGE, Mass. -- It resembles a cross between a trinket in a gumball machine and a space-age gizmo seen on Star Trek. Despite its curious appearance, this newly developed photosensor ring performs a serious task: It monitors the pulse rate and...
Supercooling Technology for Satellites
Jun 1, 1997 — The US Air Force and NASA have developed a supercooling technology for satellites that enhances the performance of onboard infrared sensors.Launched aboard the space shuttle Columbia in April, the cryogenic heat pipe is designed to lower internal...
Cryogenic Expansion Blurs Hubble Images
May 1, 1997 — Expanding nitrogen used to cool infrared detectors inside the Hubble Space Telescope's Near Infrared Camera and Multi-Object Spectrometer has caused one of the instrument's cameras to go out of focus. NASA scientists detected the foul-up shortly...
Fiber Optic Smart Structures:
May 1, 1997 — Imagine a world where buildings are their own watchmen, aircraft twist themselves into optimal aerodynamic shapes and pipelines find and report their own leaks. On a limited -- and often experimental -- basis, that world is now. And, if a cadre of...
Galileo Refocuses After Xerox Loss
May 1, 1997 — STURBRIDGE, Mass. -- Despite the loss of its biggest customer earlier this year and the resulting financial blow, Galileo Corp. officials are confident that the company will be able to get back on its feet by refocusing on its strategic objectives...
Laser Technique Reveals Metal Contamination in Soil
May 1, 1997 — Commercial ships require routine repainting, and when the old paint is sandblasted from the anchors and hulls, lead and other metals contaminate the soil. Environmental assessment of these sites typically involves collecting soil samples at various...
Micro-Aircraft Compete for Reconnaissance Roles
May 1, 1997 — Prototypes of eight micro-aircraft equipped with small engines, cameras and sensing equipment took part in the first Micro Aerial Vehicle competition on April 5 near the University of Florida in Gainesville. These micro air vehicles, each weighing...
Position-Sensitive
May 1, 1997 — Clothing manufacturers have long recognized that a completely automatic measuring system could revolutionize the apparel industry. Not only could a consumer be sure that mail-order clothing would fit, but he or she could also view a digital...
Sapphire Could Become Interferometry's Crowning Jewel
May 1, 1997 — NEDLANDS, Australia -- The gemology community considers sapphire to be one of the most precious stones on Earth, and researchers believe that the blue crystals' use as beamsplitters in laser interferometer gravitational wave detectors could be just...
Sensor Helps Scrub Away That Troublesome Lasagna
May 1, 1997 — Whether it's baked-on lasagna or simple chicken soup, Maytag is making use of advanced sensors and technologies to offer dishwasher owners reductions in energy use, operational costs, water consumption and washing time. This "smart" dishwasher,...
'Bug Eyes' Offer Potential for Collision Warning
Apr 1, 1997 — ADELAIDE, Australia -- Austrailian researchers at the Centre for High Performance Integrated Technologies and Systems at the University of Adelaide have developed a decision-making optical sensor on a single- chip system with a little inspiration...
Cameras, Infrared Sensors Nab California Toll Cheaters
Apr 1, 1997 — Four of the 12 tollbooths on the Interstate 80 Carquinez Bridge in Northern California are using photonics technology to catch drivers who do not pay the toll. Caltrans is testing a new automatic toll-collection system that recognizes transponders...
Fiber Optic Gyros Put a New Spin on Navigation
Apr 1, 1997 — Aircraft, spacecraft and ships have long benefitted from using gyroscopes to help them navigate, and recently advances in photonic gyroscopes have brought this technology into the mainstream. These improved gyroscopes -- based on fiber optic...
Intensified CCDs Detect Single-Photon Emission
Apr 1, 1997 — TRENTON, N.J. -- The new generation of high-resolution, back-illuminated intensified charge-coupled device (CCD) cameras will allow scientists to directly study the processes that regulate individual molecules, expanding the bodies of knowledge in...
Israeli Conference Marks Industry's Anniversary
Apr 1, 1997 — JERUSALEM -- A glimpse into the future by the laser's discoverer and a retrospective on the development of holography highlighted the 10th Meeting on Optical Engineering held last month at Jerusalem's International Convention Center. Keynote...
Measurement System Ensures that Black Is Black on Displays
Apr 1, 1997 — Conventional techniques of assessing contrast in displays fall short and often vary depending on reflections that caused "veiling glare" in the measurement device's optical system. Researchers at the National Institute of Standards and Technology...
Optical Sensor Keeps Tabs on Rocket Fuel
Apr 1, 1997 — MARLY-LE ROI, France -- Bigger is not always better -- especially when you are building rockets. A new optic sensor under development in France could provide flight engineers with the first pressure readings from inside the liquid gas fuel tanks...
UK Photonics Exhibition Continues to Grow
Apr 1, 1997 — BIRMINGHAM, UK -- The fourth Image Processing & Optic Technology exhibition in February introduced more than 2000 people to the latest photonics technology from more than 100 companies. The general attitude of exhibitors and attendees at the...
Applications The Key to Imager Choice
Mar 1, 1997 — Unless you know the questions to ask, selecting the right imaging technology for your applications can seem more of a coin toss than an educated choice -- an outright nightmare for those uninitiated in the intracacies of solid-state imaging...
Artificial Nose Knows Chemical Odors
Mar 1, 1997 — The vertebrate olfactory system is well-known for its extraordinary sensitivity and broad selectivity. Tufts University researchers have incorporated this array format into the design of a broadband optical vapor sensor.
Fiber Biosensors Help Decode Genes
Mar 1, 1997 — Deciphering the human genome and exploring genetic variation are fueling a biomedical revolution. Diagnosis of inherited disorders and disease at the genetic level relies on the identification and detection of the responsible gene sequences. Optical...
French Navy Looks at Optical Sensors to Avoid Electromagnetic Pulses
Mar 1, 1997 — Photonetics SA and the Direction des Constructions Navales are making final tests on a wide range of optical sensors and systems to prove that optical networks are the way to go. Using silicon wafers, glass plates and fiber optics, the French Navy...
Laser Sensors Help Reduce Waste at Wood Fiberboard Plant
Mar 1, 1997 — Eliminating waste is a prime concern for any manufacturing plant, not only from the financial standpoint, but also from the environmental one. At a Swanboard AB wood fiberboard manufacturing plant in Larvik, Norway, the problem was how to...
Micro- and Nanosatellites Could Populate New Earth-Orbit Constellations
Mar 1, 1997 — A team of researchers from The Aerospace Corp., led by I.L. Helvajian, hopes developments in laser machining will allow space agencies and communications companies to produce satellites with diameters under 15 cm, the same way hardware manufacturers...
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