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(38,284 articles)
Popular News
Polymer could be key to faster optical switching
Oct 1, 1997 — SALT LAKE CITY -- Researchers have developed a technique that uses a polymer to create an ultrafast, exciton-based optical switch that operates 10 times faster than current technology. Today optical switches apply an electric field to an inorganic crystal to change its optical properties to turn lights on and off, generating light pulses at 20 GHz. Scientists at the University of Utah in Salt Lake City and Osaka University in Japan, however, are using a material known as...
Researchers Patent Handheld Probe
Oct 1, 1997 — SEATTLE -- For more than 15 years, scientists have fine-tuned a technique that determines the presence and concentration of chemicals by analyzing reflected light. Known as surface plasmon resonance, the technique is useful for detecting pollution...
Raman Spectroscopy Could Simplify Pollution Monitoring
Oct 1, 1997 — COLUMBIA, Mo. -- Power plants must continuously track the amount of carbon monoxide, sulfur dioxide and nitric oxide that emit from their smokestacks. There usually is a separate detection system for each pollutant, but research at the University of...
Researchers fired up about infrared alarm
Oct 1, 1997 — WEST LAFAYETTE, Ind. -- The old adage "Where there's smoke, there's fire" could give way to "Where there's flickering infrared radiation, there's fire," if researchers at Purdue University have their way. They have developed a fire detection device...
Robomower cuts grass, misses dog
Oct 1, 1997 — GAINESVILLE, Fla. -- The hours of sweaty, dusty, laborious lawn mowing may soon be over, thanks to a robotic lawn mower under development at the University of Florida's Machine Intelligence Lab. Using a high-tech combination of radio, sonar and...
FORTE Satellite to Record Lightning Strikes
Oct 1, 1997 — The FORTE satellite is orbiting Earth after a successful launch on Aug. 29. The satellite, which is a joint project of Los Alamos National Laboratory and Sandia National Laboratories in New Mexico, will test ways of detecting illegal nuclear weapons...
Sensor reveals steak freshness
Oct 1, 1997 — SWANSEA, UK -- Scientists have developed an inexpensive thin-film oxygen sensor with emission bands in the visible region that fluoresces under a simple UV light source. The sensor could have widespread applications in detecting oxygen contamination...
Lasers Improve Uranium Enrichment
Oct 1, 1997 — LIVERMORE, Calif. -- Nuclear energy provides about 20 percent of the electricity used in the US, but separating uranium isotopes for power generation has been a power-hungry task itself -- until lasers offered a new method. To fuel nuclear reactors,...
Photons Collide to Create Matter
Oct 1, 1997 — Since the dawn of the nuclear age, scientists have known how to generate light from matter. Now, a team of scientists at the Stanford Linear Accelerator Center has achieved the inverse: creating matter from light. They collided large crowds of...
Hennage Steps Down as OSA Director
Oct 1, 1997 — After four years at the helm of the Optical Society of America, David Hennage has stepped down as the society's executive director. OSA issued an announcement, saying, "The board of directors recognizes and appreciates Dr. Hennage's significant...
Horiba Acquires Optics Manufacturer
Oct 1, 1997 — Horiba Ltd., a Japanese manufacturer of infrared analysis devices, has acquired the French optical equipment manufacturer Instruments S.A. The acquisition complements Horiba's existing line of engine emission analyzers and medical analyzers....
Judge Denies NIF Injunction Lawrence Livermore National Laboratory
Oct 1, 1997 — Judge Denies NIF InjunctionLawrence Livermore National Laboratory's $1 billion, 192-laser National Ignition Facility project will continue as planned following a federal district court judge's refusal to place a preliminary injunction against the...
Defense Department May Fire Laser at Satellite
Oct 1, 1997 — The US military is considering test firing a high-power chemical laser at a satellite circling Earth. Lt. Col. Bob Potter said no decision had been made on whether the laser at White Sands Missile Range in New Mexico would be fired at an Air Force...
Fiber-Coupled Raman Keeps Industry Under Control
Oct 1, 1997 — Raman spectroscopy is fast emerging as a powerful online analytical tool. The worldwide market for process analysis instrumentation is between $2 billion and $3 billion a year. Photonic technologies have a small share in this market; however, its...
Gas, Solid-State Lasers Battle for Printers' Best Impressions
Oct 1, 1997 — With annual revenues exceeding $300 billion, the printing industry is the third largest manufacturing business in the world. Several types of lasers play critical roles in this market, helping to transfer digital information from computer-generated...
High-NA Optics Push the Resolution Limits
Oct 1, 1997 — Many demanding optics applications are steadily increasing performance goals for imaging, focusing and collimating systems. Microlithography and compact disk lens designs are among those that challenge optical designers to continually stretch the...
Liquids and Gels Fill Gaps in Tricky Optical Designs
Oct 1, 1997 — The physical and optical properties of liquids and gels make them ia naturali for solving problems in optics design applications. They can flow into the most difficult design situations, and optical-quality materials are available for many...
Lasers in lithography: A race against time
Oct 1, 1997 — In the 1970s, the scientific community believed that optical lithography could not create microcircuits on semiconductors with features smaller than 1.25 mm. It was wrong. Today, with the help of excimer lasers and improved multielement lens...
New lithography system shortens fabrication process
Oct 1, 1997 — Instead of pushing to reduce the feature size on chips, one company is improving lithography by reducing the number of steps required to manufacture chip layers with non-critical dimensions, thereby shrinking the overall chip production time.
Report should help insure optical supply
Oct 1, 1997 — As insiders speculate whether the semiconductor industry will have enough CaF2 to meet the needs of deep UV lithographic systems, new information expected by the end of the year could provide the facts necessary to insure a sufficient supply of the...
Scanners likely to overtake steppers
Oct 1, 1997 — While thereis not a complete consensus, several experts including and Intel, the worldis largest chip manufacturer, say that step-and-scan lithography machines will likely usurp the favored-son status from step-and-repeat machines as wafer sizes...
China Raises Barriers to Telecom Market
Oct 1, 1997 — China has decided against opening its massive telecommunications market to foreign service providers, citing the dearth of laws to guarantee fair competition. In addition, the posts and telecommunications sectors have not been separated, and...
Market Sleuthing Uncovers Clues to Customers
Oct 1, 1997 — CHICAGO -- Every year companies spend millions of dollars on focus groups and marketing surveys to get the big picture of their customer base. But they might do well to investigate the individual trees instead of cross-sectioning the whole forest,...
EG&G to Supply Detector for GE Digital X-Ray
Oct 1, 1997 — SANTA CLARA, Calif. -- An amorphous silicon detector built by EG&G in Santa Clara will form the backbone of General Electric's new digital x-ray system, which could reduce or eliminate the need for x-ray film as well as speed processing time and...
Europeans: US Plan Imperils Agreement on Communications
Oct 1, 1997 — BRUSSELS, Belgium -- The European Union has warned the US Federal Communications Commission that it risks violating an international agreement because of its plan for protecting US telecommunications carriers from stiff foreign competition. In a...
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