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Research & Technology News

Kopin and Motorola Sponsor Design Contest
Oct 1, 1998 — Kopin Corp. of Taunton, Mass., and Motorola Inc., based in Hong Kong, have issued a challenge to engineers, designers and students: Design a portable commercial product that incorporates Kopin's active-matrix liquid crystal display and Motorola's VirtuoVue display technology. The winning design will receive the grand prize, $10,000. Other cash awards of $5000, $2000 and $1000 will go to the first-, second- and third-place winners. To enter, contestants must submit a write-up on how the virtual...
Lasers Are Used to Screen Solid-State Catalysts
Oct 1, 1998 — Scientists looking for solid-state catalysts that are important to the chemical and oil industries have relied on trial-and-error processes because catalytic activity is difficult to screen. Unlike superconductivity or magnetoresistivity, properties...
Lens Array Increases Photodetection Efficiency
Oct 1, 1998 — A two-lens array developed by physicists contributing to the HERA-B detector facility at the Deutsches Elektronen-Synchrotron facility shows that some of the most advanced experimentation in pure physics can produce very simple and practical...
Lenses Boost Solar Cells' Power
Oct 1, 1998 — Two solar concentrator arrays will supply Deep Space 1's power-hungry propulsion system with more than 2 kW at the beginning of the mission. The solar concentrator arrays with refractive linear element technology allow a relatively small area of...
Low-Cost Quantum Cascade Laser Nears Reality
Oct 1, 1998 — A team of researchers has designed a quantum cascade laser using one of the most common low-cost semiconductor compounds in the world: gallium arsenide (GaAs). The advance could prove important in sensing applications requiring mid-IR wavelengths...
Luminous-Intensity Standard Set for Traffic Lights
Oct 1, 1998 — The International Commission on Illumination in Vienna, Austria, recently reviewed requirements for the luminous intensity of road traffic signals. It undertook a major review of its recommendations published in 1988 in A Guide for the Design of...
Mirror Enables 3-D Lithography
Oct 1, 1998 — Ball Semiconductor Inc. has set its sights on revolutionizing the computer-chip industry by manufacturing a spherical chip. To accomplish this, it has incorporated a multifaceted mirror into its proprietary lithography system. The process used...
New Option Emerges for Optical Networks
Oct 1, 1998 — For the past few years, the news in telecommunications circles has been wavelength division multiplexing. Now Commercial Technologies Corp. in Richardson, Texas, hopes to add a new catchphrase to the industry lexicon: code division multiple access....
Our Bodies, Our Photons
Oct 1, 1998 — The thermal effects of microwave radiation on living tissue are well-documented and strictly regulated. However, researchers are drawing attention to the fact that microwave radiation, even in extremely low doses, induces nonthermal influences whose...
Researchers Advance VCSEL Technology
Oct 1, 1998 — In the quest to develop long-wavelength vertical cavity surface-emitting lasers (VCSELs), scientists have faced two large barriers: temperature performance and operating voltage. W.L. Gore & Associates, based in Newark, Del., may have solved...
Scientists Fabricate Plastics with Nonlinear Properties
Oct 1, 1998 — Although researchers have successfully designed optical-quality plastics, the nonlinear optical properties of plastic tend to fade over time. Therefore, many researchers have dismissed plastics as impractical for use in fiber optic devices and light...
Scientists Unveil High-Power Mid-IR Laser
Oct 1, 1998 — Commercially available lasers based on semiconductor compounds such as PbSn have proved suitable for applications requiring wavelengths in the mid-IR range. The only problem with these lasers is that the maximum power is often less than 1 mW. In the...
Tiny Transistors Fit on New Chip
Oct 1, 1998 — Researchers at Texas Instruments in Dallas have developed transistors with a channel length of 0.07 µm -- so small that 400 million can fit on a single chip. The new technology could draw interest from some imaging board manufacturers,...
Conoscopy Assesses Displays
Sep 1, 1998 — Liquid crystal displays are gaining market share. As prices fall, users want brightness and viewing angles comparable to that of conventional displays. A display's visual performance usually is measured with goniometric methods based on mechanical...
European Project to Handle Higher Data Levels
Sep 1, 1998 — European researchers have announced a plan to implement a single, all-optical switching system in response to rising data traffic in telecommunications systems. The electronic switching layers between optical networks form a bottleneck that limits...
Femtosecond Laser Explores Superdense Matter
Sep 1, 1998 — Researchers at the University of Michigan at Ann Arbor have used a high-resolution femtosecond laser that delivers trillions of watts to observe how and when electrons and atoms configure themselves in superdense environments. The work could lead to...
Fiber Optic Array Improves Spectroscopic Imaging
Sep 1, 1998 — Researchers from the University of South Carolina have created a fiber optic array that provides data in the spatial, temporal and spectroscopic dimensions. It may be useful in biomedical applications such as diagnosing cancer. The fiber optic...
Hybrid Detectors Work Fast
Sep 1, 1998 — Using a hybrid photomultiplier, spectroscopists now can measure an optical pulse 17 ns after a thousandfold more intense pulse without having to gate the detector to protect it. This development can reduce the complexity of spectroscopy study,...
Imaging Chip Works Quickly
Sep 1, 1998 — A group of Stanford University researchers has collaborated with several industry leaders to develop an imaging sensor that produces images faster, easier and cheaper than its predecessors. By moving the analog-to-digital conversion function onto...
Laser Catapults Progress in Gene Analysis
Sep 1, 1998 — To better understand how cancers develop, molecular biologists seek to analyze genes at the single-cell level. Lasers have played an important role in capturing individual cells, but it has been difficult to effectively isolate tumor cells from...
Laser Unveils a 3-D Model of Chaos
Sep 1, 1998 — Does coffee taste different if you pour the cream into the cup first? Does the temperature of the cream influence the texture? These were the questions one recent technical conference attendee was exploring aloud during a midmorning coffee break....
Naval Research Laboratory Develops Quantum Well Lasers
Sep 1, 1998 — Scientists at the Naval Research Laboratory's Optical Science Div. have developed several types of semiconductor lasers that emit light in the mid-infrared. One of the secrets behind the design is a new capability called "wavefunction engineering"...
New CMOS Detector Transmits at 520 Mb/s
Sep 1, 1998 — A spatially modulated light detector fabricated using complementary metal oxide semiconductor (CMOS) technology and developed at Vrije Universiteit Brussel has achieved bit-rate performance of up to 520 Mb/s. The technique provides options for using...
New Lasers Push Space-Based Lidar
Sep 1, 1998 — The researchers at the 19th International Laser Radar Conference focused their attention on new lasers for space-based lidar to study atmospheric chemistry and physics. Lidar, which can be rugged enough for space travel, can make measurements day...
New Technology Assists Doctors in Using Laser Ablation of Blood Clots
Sep 1, 1998 — Physicians may soon have another tool for treating blood clots in humans. DRS Hadland Inc. of Cupertino, Calif., has supplied Los Alamos National Laboratory in New Mexico with an ultrahigh-speed digital imaging system that will assist researchers in...

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