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Research & Technology News
NASA Scientists Report Insights into Rainfall
Jul 1, 1998 — Thanks to recently released images taken from a NASA/ Japan Space Agency spacecraft's lightning image sensor, scientists are gaining new insights into rainfall-producing cloud systems over the tropics. Sensors aboard a NASA satellite captured this image of Atlanta. Colors on the map signify heat and pollution. Recent images reveal that 98 percent of lightning occurs over land and little over the oceans. NASA scientists attribute this phenomenon to enhanced convection: the continual...
People Finder Flounders Under Testing
Jul 1, 1998 — Finding the survivors among the wreckage of a bombing or plane crash is difficult at best, so when the US government learned about a new device from DielectroKinetic Laboratories LLC of Washington, they were eager to put it to the test. What they...
Physicists Propose Novel Method to Catch Neutrinos
Jul 1, 1998 — For years, scientists have sought the elusive, weightless particles known as neutrinos. Neutrinos, which behave somewhat like photons (they can travel without changing direction through matter), are weakly interacting particles and so can travel...
Plastic Fiber Technique Improves Cost
Jul 1, 1998 — A Florida company has developed and patented a method for the continuous production of graded-index plastic optical fiber. James K. Walker, CEO of Nanoptics Inc. in Gainesville, Fla., presented an overview of the method at the Plastic Optical Fiber...
Researchers Make Gains in Understanding Human Thought
Jul 1, 1998 — Researchers at Stanford University have taken an important step in understanding the chemistry behind the way cells in the brain communicate with one another. Chemists used a laser to trap microscopic membranes in the brain of a sea slug. These...
Researchers Shrink Confocal Laser Microscope
Jul 1, 1998 — Scanning confocal laser microscopes are bulky and stay in one place. But a start-up company aims to find its success by miniaturizing these devices while still providing three-dimensional optical sectioning and high contrast. The battery-operated...
Solitons Work in Real Network
Jul 1, 1998 — The increasing demand for bandwidth in optical links has found an answer in nonlinear propagation, which recently was put into play by Pirelli Cables and Systems and MCI Telecommunications Corp. This method increased the system's capacity,...
TRW's UV Laser to Advance Photolithography
Jul 1, 1998 — TRW's Space and Technology Div. in Redondo Beach, Calif., has taken another step closer in the development of a light source for lithography for the semiconductor industry. TRW selected SDL Inc. in San Jose, Calif., as the initial supplier of...
Astronauts Go for a Spin
Jun 1, 1998 — Astronauts aboard the space shuttle Columbia had their heads spinning, literally. As part of a series of space-based neurological experiments, they took turns in a spinning chair while IR video cameras tracked their eye movements. NASA researchers...
Coating Method Makes Molecule-Thick Layers
Jun 1, 1998 — A method for dip coating a substrate with organic polymers may increase the efficiency of light-emitting diodes (LEDs) and computer displays while reducing costs and environmental hazards. The technique, being explored by a group of MIT researchers,...
Diode Pumps New Self-Frequency-Doubled Laser
Jun 1, 1998 — In an intensive three-week push, researchers from the Center for Research and Education in Optics and Lasers at the University of Central Florida in Orlando cranked up the power of their diode-pumped, self-frequency- doubled Nd:YCOB laser. Using a...
Facial Recognition System Verifies Driver's Identity
Jun 1, 1998 — A computerized facial recognition system, employing advanced algorithms coupled with off-the-shelf imaging equipment, has given this state's motor vehicles division an advantage in determining a license applicant's identity. Not long ago, there were...
Fibers in Spark Plug Monitor Ignition
Jun 1, 1998 — University of Texas researchers and the Ford Motor Co. are collaborating on a spark plug that employs fiber to monitor pre-ignition fuel concentration. The goal, said developer Mathew Hall, is reduced engine pollutants and improved performance by...
Fluorescence Spectroscopy Measures Pollution in Boston Harbor
Jun 1, 1998 — Scientists have a new tool to measure the pollution in Boston Harbor. Researchers at the Massachusetts Institute of Technology in Cambridge, Mass., have developed a portable, fiber optic spectrofluorometer that detects harmful organic compounds. In...
Holography Comes to the Masses
Jun 1, 1998 — Since its introduction, holography has been stifled by its lengthy and complicated production process and limitations in image quality -- putting it beyond the reach of commercial success. Two companies are hoping to overcome those barriers by...
Inexpensive Infrared Sensors Rely on Microcantilever
Jun 1, 1998 — In a bid to provide an alternative to high-priced, cooled IR detectors, Sarcon Microsystems Inc. of Knoxille, Tenn., has developed a microcantilever-based sensor priced at about $4000 for a 240 3 320 array. Cooled IR detectors can cost upward of...
Interferometer Detects Microscopic Flaws on Optical Surfaces
Jun 1, 1998 — A team of scientists at Lawrence Livermore National Laboratory in Livermore, Calif., has developed an absolute interferometer that can detect imperfections less than 1-nm deep in highly polished surfaces, such as lenses or mirrors. The device could...
Ion Plasmas Simplify Atomic Clocks
Jun 1, 1998 — Precision timekeeping and the understanding of white dwarf and neutron stars have been made easier through observations of a laser-cooled ion plasma created by researchers at the National Institute of Standards and Technology. Led by physicist...
Laser Texturing Slashes Cylinder Wear
Jun 1, 1998 — Laser texturing of engine cylinder walls may reduce oil consumption by 40 percent compared with traditional cylinder machining techniques, according to a manufacturer of engine honing equipment. Machine honing of engine cylinder walls gives them...
Machine Vision Spots Spoiled Wheat
Jun 1, 1998 — In the past two years, wheat farmers in the US have faced a serious problem: Fungal spores, known as karnal bunt, have been infecting their crops. To prevent the spread of this blight, farmers and scientists have turned to photonics to speed up...
Multispectral Imager Enhances Remote Sensing
Jun 1, 1998 — Scientists at NASA's John C. Stennis Space Center in Mississippi have developed a portable multispectral imaging device operating in a range of user-selectable bands. The imager produces multiple video images of the same scene at spectral bands...
Open Solar Telescope Overcomes Hot-Air Turbulence
Jun 1, 1998 — A new telescope perched 15 m above a mountaintop promises to solve many of the problems that plague telescopes designed to peer at the sun. Using a scheme that leaves the main mirror of the telescope open to ambient wind, solar researchers from...
Phoenix Finds the Flames
Jun 1, 1998 — A team of engineering students from Trinity College in Hartford, Conn., took the No. 1 prize in an international contest to build a computerized robotic device that detects fire. The robot, dubbed Phoenix, employed IR sensors for edge and heat...
Photonics Projects Are Among Award Semifinalists
Jun 1, 1998 — Teams from Japan, Belgium and Brazil made it to the semifinal round of the Texas Instruments Inc. DSP Solutions Challenge with projects that highlight the important relationship between photonics and electronics. The contest challenges engineering...
Photonics Weeds out the Impostor Jewels
Jun 1, 1998 — How many times have you opened the mailbox to read, "Congratulations! If you have the winning number, you will receive a valuable diamond pendant"? Your excitement builds when you see that your number matches the winning number, only to be let down...
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