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(9,091 items)
Research & Technology News
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, according to a spokeswoman for the company. The transistors could lead to a high level of systems integration and could enable chips to exceed 1 GHz, the company said. Products based on these chips will weigh less, be smaller, consume less power and cause...
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...
Observatory Employs New Process in Gemini Mirrors
Sep 1, 1998 — AlumiPlate Inc. of Minneapolis, in collaboration with the National Optical Astronomy Observatory and II-VI Inc. of Saxonburg, Pa., has developed a diamond-turning process that yields the high-quality mirrors necessary for the near-IR spectrograph in...
Optical Sensor Monitors Film Growth
Sep 1, 1998 — Over- or under-stressed thin films means that semiconductor devices, such as quantum well lasers, don't work right. To help remedy this problem, a laser optical sensor, called the multibeam optical sensor, measures stress during a thin film's...
Photonic Crystals Trap IR Light
Sep 1, 1998 — A team of scientists from Sandia National Laboratories and Ames Laboratory at Iowa State University revealed that they have constructed a three-dimensional IR photonic crystal on a silicon wafer that reflects light between 10 and 14 µm. The...
Physicist Uncovers Secrets of Sonoluminescence
Sep 1, 1998 — For years, researchers have tried to explain the atomic processes behind sonoluminescence, the phenomenon in which ultrasonic waves break against a water bubble's surface and heat gas atoms inside. This rapid heating causes gas atoms to glow....
Researchers Explore Oxide Materials for Fiber Doping
Sep 1, 1998 — Recently, a team of researchers at Containerless Research Inc. in Evanston, Ill., explored using yttria and alumina compositions to expand the range of fiber lasers in the mid-IR. There was only one problem: Molten oxides that do not contain silica...
Researchers Observe Newton Rings in Laser Ablation
Sep 1, 1998 — Researchers have examined the brief interval after a laser pulse arrives and before it heats away a material's atoms during laser ablation. Scientists at the University of Essen in Germany studied the effect of a 620-nm, 120-fs laser pulse on...
Sandia Researchers Take Cue from Seashell Design
Sep 1, 1998 — Rarely do scientists mention seashells and optical coatings in the same sentence. That may soon change now that researchers at the US Department of Energy's Sandia National Laboratories and the University of New Mexico in Albuquerque have disclosed...
Sensor Quickly Inspects Inner Pipe Walls
Sep 1, 1998 — Researchers at Tianjin University and Xi'an Jiaotong University have developed a noncontact laser sensor for inspecting the inner walls of pipes with 80- to 140-mm interior diameters. A HeCd laser illuminates selectively fluorescent dyes,...
Silver Coating Maintains Reflectance
Sep 1, 1998 — Although the reflectors behind the xenon flashlamps that pump the Nd:glass amplifiers in the National Ignition Facility's 192 laser beams might seem at most a secondary concern, their reliability is important. Lawrence Livermore National...
Advances in Polymer Gels Pave Way for Sensors, Displays
Aug 1, 1998 — Physicists at the University of North Texas in Denton have conducted trials using a type of polymer gel called a hydrogel that may play a role in new display or sensor technologies. The hydrogels swell or shrink when environmental stimuli such as a...
Airborne Laser Passes Another Test
Aug 1, 1998 — The US Air Force, along with Boeing Co. of Seattle, TRW Inc. in Detroit and Lockheed Martin in Sunnyvale, Calif., has fired a multihundred-kilowatt chemical oxygen iodine laser as part of the Airborne Laser Program. The experiments occurred June 3...
Astronomy Project Produces Images
Aug 1, 1998 — The European Southern Observatory's Very Large Telescope delivered its first scientifically useful images May 25-26. Unit Telescope 1 is the first of four 8.2-m telescopes that will join up to three 1.8-m auxiliary telescopes to compose the 200-sq-m...
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