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Research & Technology News

Fibers Measure Frogs' Eyes
Nov 1, 1998 — Researchers at two Tulsa universities have designed a fiber optic probe to measure distances inside a frog's eyeball, an early step in artificial vision research. Peter LoPresti, an electrical engineering professor at the University of Tulsa, and Warren Finn, a physiologist at Oklahoma State University's College of Osteopathic Medicine, designed the probe to help them accurately select regions of a frog's retina to stimulate.  As a first step toward artificial vision, researchers at the...
Infrared Sensor Counts Insects
Nov 1, 1998 — If there's one thing that bugs the agriculture industry, it's bugs. Insecticides are effective in debugging stored products such as grains, fruits and vegetables, but health and environmental officials realize they are dangerous as well and are...
Integrating Sphere Tests Efficiency
Nov 1, 1998 — As building developers struggle to incorporate energy conservation into their designs, controlling heat and light fluxes through windows is crucial. As the "intelligent window" becomes more complex, so does the objective assessment of its overall...
Lidar System to Find Oil and Gas Fields
Nov 1, 1998 — A hydrocarbon differential absorption lidar system is expected to help Laser Exploration Inc. in Midland, Texas, to find stratigraphically trapped oil and gas fields. Ophir Corp. in Littleton, Colo., and Chimera Geophysical Corp. in Reno, Nev.,...
Light Source Enables UV Lithography
Nov 1, 1998 — As circuit features shrink and optical lithography approaches its technical limits, the world's semiconductor industry continues to evaluate its options for the chip-making method of the future. Extreme-UV lithography -- which should be able to...
Liquid-Filled Camera Sees Like an Eyeball
Nov 1, 1998 — When it comes to discriminating between various shades of black and white -- even picking out a dark figure lurking in the shadows -- the eyeball does a very nice job. Cameras, on the other hand, are somewhat lacking in their...
Material Enables Energy-Efficient Window
Nov 1, 1998 — Researchers at the University of California and Lawrence Berkeley National Laboratory have discovered an inexpensive material that could lead to highly efficient windows for automobiles and buildings. Robert Kostecki and Frank McLarnon made the...
Method Measures Micron-Scale Fluid Flows
Nov 1, 1998 — Developers have made significant progress over the years with miniaturization, including microfluidic devices. But measuring the fluid flow within those devices -- with passages of 1 to 100 µm -- has not been easy. Researchers at the University...
Observations Support Homochirality Theory
Nov 1, 1998 — Astronomers at the Anglo-Australian Observatory in New South Wales have developed new theories on optically active molecules based on some age-old research of Louis Pasteur and new observations of Orion nebula. For years, scientists have sought to...
Photoassociation Makes Cold Cs2 Molecules
Nov 1, 1998 — Physicists at the Centre National de la Recherche Scientifique south of Paris have taken Bose-Einstein condensate research another step forward by using a new method of associating pairs of supercold atoms to form a supercold molecule. Instead of...
Photonic Crystal Shrinks Prism Size
Nov 1, 1998 — NEC Corp. in New York City, working with To-hoku University and NTT Optoelectronics Laboratories of Japan, has created a three-dimensional photonic crystal with a "super prism" effect. It offers increased light refraction in a prism one-hundredth...
Researchers Edge Toward Pump-Free Dye Laser
Nov 1, 1998 — Electrochemiluminescence has been studied since the 1970s as a way to excite dye molecules, but the pumping rate has remained far too low for laser action. Now researchers at NTT Basic Research Laboratories in Atsugi, Japan, have enhanced the...
Researchers Glimpse Artificial Molecules in Action
Nov 1, 1998 — Research efforts between the University of Munich and the University of Delaware have resulted in a technique that excites artificial molecules in a manner resembling the way light excites real molecules. This deceptively abstract technology may...
Researchers Report Occurrence of Mesospheric Bores
Nov 1, 1998 — An undular bore is an atmospheric phenomenon characterized by waves traveling in a fixed pattern behind a wave- front. Usually, this phenomenon occurs in the troposphere -- the lowest part of the atmosphere extending up 6 miles. In 1993, Michael...
Space Mirror to Light up the North
Nov 1, 1998 — In February, night may become more like day in some cities across the Northern Hemisphere, as cosmonauts aboard the space station Mir deploy a giant, 25-m reflector and direct its light Earthward. The light could be as much as 10 times brighter than...
Subaru Telescope Gets 27-ft Mirror
Nov 1, 1998 — A team of opticians has completed a one-piece, 27-ft-diameter mirror that soon will be incorporated into the Subaru Telescope, which is under construction at the summit of Mauna Kea in Hawaii. Led by Scott Smith of Contraves Brashear Systems of...
System Validates Soap-Film Study of 2-D Turbulence
Nov 1, 1998 — Studying the flow of soap film has been thought to be a convenient way to study 2-D turbulence in a search for answers to geophysical systems. But research with such models has been inconclusive, largely because methods have enabled only...
UK College Receives Space Simulator
Nov 1, 1998 — To calibrate a satellite device that will be used for detecting infrared emissions and solar radiation from space, a team of researchers from Imperial College in London has received a space simulator system from Kurt J. Lesker Co. Ltd. of Hastings,...
BrainTech and UTMC to Develop Vision Recognition Board
Oct 1, 1998 — BrainTech Inc., based in Vancouver, British Columbia, Canada, and UTMC Microelectronic Systems Inc., a business unit of Hamilton Standard, have agreed to develop and manufacture a visual recognition accelerator board for use in the vision systems...
Device Detects Particles in Gas Flow
Oct 1, 1998 — The combination of a laser and time-of-flight mass spectrometry promises to enable semiconductor manufacturers to measure the size and type of individual particles in a vacuum chamber during the manufacturing process. Researchers at Lucent...
Eye-on-a-Chip Seeks to Mimic Human Vision
Oct 1, 1998 — Scientists are looking to improve on one of nature's wonders -- the human eye. Researchers at the University of Michigan are leading a multiuniversity effort to design a microchip eye that could mimic many of the natural eye's functions but also...
Feds Postpone Laser Safety Tests
Oct 1, 1998 — The delayed delivery of a laser has held up evaluations of the US Federal Aviation Administration's guidelines for laser exposure within 10 nautical miles of an airport. The tests, which were scheduled to begin earlier this year at the agency's Mike...
Fiber Increases Bandwidth in WDM Amplifiers
Oct 1, 1998 — There has been one major problem with conventional erbium-doped fiber optic amplifiers. Because of certain characteristics of erbium-doped fiber, dense wavelength division multiplexing (WDM) systems use only 32 nm of usable bandwidth. In the 1550-nm...
Holographic Storage Takes a Step Toward Viability
Oct 1, 1998 — If holographic storage is ever going to make it out of the lab and really compete with existing data storage techniques, researchers must come up with practical, cost-effective solutions to some of the hurdles holography still faces. One such hurdle...
Integrated Components Trim NASA Budgets
Oct 1, 1998 — Space exploration at the beginning of the next century will balance tight budgetary constraints against the need to understand our planetary environment. New technologies introduced in NASA's New Millennium program are designed to ensure that more...

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