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Basic Science News
Laser Component Builders Get Quality Boost
May 1, 1998 — Thanks to researchers at the University of Michigan, manufacturers of microelectronics used in laser production soon will have access to a device that will for the first time allow critical analysis of key aspects of the process. "Microelectronics is pushing the scale of miniaturization to smaller and smaller levels," said John Bilello, one of two researchers in the university's department of materials science and engineering. "The ability to gain quality control at these levels is critical for...
New Twist: Lasers Could Help Create Larger Microchips
May 1, 1998 — Microchip and display companies are showing interest in a variation on a laser micromachining technique that creates large-area, low-defect crystalline silicon films. Liquid crystal displays and microchips use amorphous silicon as the substrate for...
Photorefractive Volume Gratings Stabilize Wavelengths
May 1, 1998 — A research team from the National Research Laboratory of Metrology in Tsukuba, Japan, has stabilized the wavelengths of two diode lasers by using two photorefractive volume gratings in one lithium niobate (LiNbO3) crystal. Both wavelengths exhibited...
Probing the 'Glory Ring' Mystery
May 1, 1998 — Ever notice bright, colored rings around a distant airplane? Researchers have described this phenomenon as a strong backscattering of light by droplets of water. While the theory was well-developed, it remained difficult to verify experimentally....
Radiometer Finds Use in Ophthalmology
May 1, 1998 — Photodynamic therapy, a new medical treatment involving light and chemistry, may someday offer succor to patients stricken with a variety of diseases including cancer and macular degeneration, the leading cause of blindness among septuagenarians....
Researchers Find Privacy in Chaos
May 1, 1998 — Communication can be chaotic enough when the communicators stand face to face. Introducing technology into the equation can sometimes aggravate potential misunderstandings. Who, then, would want to throw even more chaos into the communication...
Flexible Controller Maintains Fiber Optic Polarization
Apr 1, 1998 — For nearly 200 years scientists and engineers have worked to exploit the inherent polarization of a light wave for mankind's benefit. From cutting edge research in laser cooling and atomic-transition gravitational wave detection to much that we take...
National Science Foundation Funds Imaging Facility
Apr 1, 1998 — The National Science Foundation has provided a $150,000 grant to the University of Louisville in Kentucky for an atomic force microscope and a white-light scanning interferometric microscope. The two instruments will complement a new scanning...
Quantum Mechanical Transistor Promises Photonic Applications
Apr 1, 1998 — Scientists at Sandia National Laboratories in Albuquerque, N.M., have developed a quantum mechanical transistor that may increase the accuracy of optical detectors and energy spectrometers. The transistor takes advantage of a phenomenon described in...
Spectroscopic Technique Images Cell Physiology
Apr 1, 1998 — Chemists and physiologists from the University of Illinois at Urbana-Champaign have developed an imaging technique that relies on fluorescence spectroscopy to provide detailed information about a cell's physiology. The scientists combined...
Veeco Eyes Process Metrology Expansion
Apr 1, 1998 — Veeco Instruments Inc. has picked up the ball that was dropped last year when Zygo Corp.'s planned merger with Digital Instruments Inc. collapsed. To improve its position in process metrology, Veeco has signed a definitive merger agreement with...
Adaptive Optics System Enhances 3.5-m Telescope
Mar 1, 1998 — The Max Planck Institute for Astronomy in Heidelberg, Germany, and Adaptive Optics Associates in Cambridge, Mass., have installed an adaptive optics system on the joint German and Spanish 3.5-m telescope in Calar Alto, Spain. The optical system...
Cantilever Thermal Detector to Challenge Microbolometer
Mar 1, 1998 — Researchers at Oak Ridge National Laboratory have developed an uncooled thermal infrared detector that they hope will cut the costs of IR cameras by one-third. Researchers Panos Datskos and Slobodan Rajic have developed a microcantilever,...
Coherent Inc. Fined for Exporting Laser Parts to India
Mar 1, 1998 — The US Commerce Department's Bureau of Export Administration has fined laser manufacturer Coherent Inc. $20,000 for illegally exporting two laser components to a company that is affiliated with India's Atomic Energy Department. The problem stemmed...
External Cavity Amplifier Targets Printing, Imaging and Telecom
Mar 1, 1998 — Targeting low coherence optical coherence tomography, large-scale printing and telecom applications, researchers at the University of Central Florida's Center for Research and Education in Optics and Lasers have developed a flexible multilayer,...
Feds: US Enrichment Corp. May Privatize
Mar 1, 1998 — In a move that could add $1 billion to $2 billion to US Treasury coffers, the Maryland-based US Enrichment Corp. has received federal approval to proceed with its sale to the private sector. US Enrichment provides enriched natural uranium for...
Researchers Inch Closer to X-Ray Wavelengths
Mar 1, 1998 — Scientists have long sought to explore the structure of matter at the atomic and molecular level. To achieve this, they have been working toward developing a self-amplified spontaneous emission x-ray free-electron laser. Recently, a team from the...
Researchers Work on Laser-Cooled Atomic Clock
Mar 1, 1998 — A team of researchers at the National Institute of Standards and Technology is set to begin work on an advanced laser-cooled cesium atomic clock slated to go aboard the international space station. The clock will employ the latest techniques for...
Scanning Probe Microscope Looks at Liquids' Surfaces
Mar 1, 1998 — Researchers at the Lawrence Berkeley National Laboratory have developed a scanning probe microscope that can show the surfaces of liquids with horizontal resolutions of about 100 Å and vertical resolutions of about 1 Å. Dubbed scanning...
Spectroscopy Advance Targets Industrial Applications
Mar 1, 1998 — Industry has been slow to accept laser-induced breakdown spectroscopy for chemical analysis because of the technology's inherent signal instability and because it measures relative, rather than absolute, concentrations of trace elements. However,...
Modular Detectors Advance Protein Crystallography
Feb 1, 1998 — The change of a single atom on a protein that regulates the molecular reading of our genetic code can trigger the onset of cancer. To learn how these and other molecular processes work, scientists study the three-dimensional atomic structures of...
Rockwell Eyes Digital Imaging Market
Feb 1, 1998 — NEWPORT BEACH, Calif. -- Rockwell Semiconductor Systems has entered the battle for OEM digital imaging market share armed with five new sensors and a history of military and space imaging solutions. With that applications pedigree, you might think...
High Power Laser Optics:
Jan 1, 1998 — As power levels rise above 5 kW, optics become critical to the performance and reliability of laser systems. These applications demand consistent laser-quality ZnSe that is defect free and has bulk absorption at or near theoretical values. Other...
Lasers Track Air Pollution
Jan 1, 1998 — Chemical emissions in the Earth's atmosphere profoundly affect the weather. When dust, soot, ice or sea salt act as catalysts, atmospheric chemicals can reduce or contribute to smog, global warming and the ozone hole. Scientists studying climate...
Scientists Solve H 2 O Mystery
Jan 1, 1998 — For the last 50 years, scientists have sought to understand the biochemical and physical processes that take place in liquid H2O. They employed such methods as dielectric relaxation, spectroscopy and nuclear magnetic resonance, but these methods...
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June 2024
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