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Spectroscopy News
Ultrafast Spectroscopy Reveals the Potential of Alkanes
Mar 1, 1998 — Chemists have taken another step closer to understanding alkane activation reactions occurring at room temperature, thanks to an ultrafast spectroscopic technique that provides images at a rate of a trillionth of a second. Alkanes are compounds of carbon and hydrogen atoms held together by single bonds. The bonds in most alkanes tend to be strong enough to render them unreactive. In the 1980s, researchers at the Lawrence Livermore National Laboratory and the University of California, both at...
Fiber Optic Probes Improve UV Raman Spectroscopy
Feb 1, 1998 — Raman spectroscopy has emerged as an important tool in determining analytical and structural information concerning low concentration aqueous biomolecules. However, many samples require in vivo or in situ sampling. To solve this problem, scientists...
Raman Spectroscopy Detects Herbicides in Water
Feb 1, 1998 — Raman Spectroscopy Detects Herbicides in Water ANN ARBOR, Mich. -- Researchers at the University of Michigan have employed Raman spectroscopy to measure two herbicides in water. The herbicides, paraquat and diquat, contain chemicals that cause plant...
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...
Stabilized Laser Source Is Key to Interferogram
Jan 1, 1998 — A researcher from CSO Mesure in Grenoble, France, has produced a high-frequency laser source that could prove useful in next-generation interferometric spectrometers. Developed as part of a project to take metrology readings from space, CSO's laser...
Guide Targets High-Tech Start-Ups
Dec 1, 1997 — RESEARCH TRIANGLE PARK, N.C. -- To be successful, small high-technology start-up companies -- including manufacturers of photonic components -- need to listen to and learn from their customers. That's the advice found in "Making Money with Your...
Detector Makes Unearthly Impression
Nov 1, 1997 — The highly touted Mars Pathfinder voyage in August made headlines not just because it afforded the world its first up-close images of the Red Planet, but also because it marked NASA's successful use of inexpensive, commercially available technology....
IR Beamsplitter Coatings Reduce Gas Analyzer Size, Cost
Nov 1, 1997 — A manufacturer of gas-analysis equipment had developed a product that could quickly and accurately measure up to 250 hydrocarbon gases, but it was not without its problems. It was a large, expensive instrument. The company determined that a...
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...
FTIR Examines Engine Deposits
Oct 1, 1997 — CHESTER, UK -- Collaborators from Queen's University in Kingston, Ontario, Canada, and the Shell Research and Technology Centre Thornton in Chester have combined chemical separation with Fourier transform infrared (FTIR) spectroscopy to examine...
Spectrometer Makes Astronomical Debut
Oct 1, 1997 — Amateur and university astronomers have more in common than a passing interest in stars. With the tight equipment budgets at universities today, professional astronomers often find themselves confronted with a problem that most amateur astronomers...
Oil refinery finds FTIR spectrometer is slick
Sep 1, 1997 — The oil refining industry has a tall order to fill: monitoring and ensuring the purity and quality of its product. In the quality control laboratory at a major US oil refinery, a laboratory spectrometer with an automated sample system from Analect...
Volcano Research Keeps Its Distance
Sep 1, 1997 — MEXICO CITY -- A Pan-American research team has been using photonics to watch a nearby volcano in hopes of learning how to forecast eruptions, assess health risks for people who live near volcanoes and determine volcanoes' effects on air pollution....
Lasers Help Identify Airborne Particles in Real Time
Aug 1, 1997 — RIVERSIDE, Calif. -- Around the globe, lasers are becoming one of the most accurate ways to measure wind speed and direction. Now researchers are using coherent beams to determine in real time and in situ the size and chemical composition of...
New Spectrometer Sheds Light on Chemical Mystery
Aug 1, 1997 — GLASGOW, UK -- Determining the absolute configuration of molecules is a prerequisite to developing new medicines. So-called chiral molecules are common and yet complex entities, existing in two forms that are mirror images of one another. Among the...
Hubble Captures Star Life Cycles
Jun 1, 1997 — A star is born in one of the first photographs released from the upgraded Hubble Space Telescope.The telescope's Near-Infrared Camera and Multi-Object Spectrometer NICMOS updated astronomers' IR view of the Orion Nebula, the nearest "nursery" for...
Renishaw, EIC Collaborate on Raman Spectroscopy
Jun 1, 1997 — Renishaw has forged a union with EIC Laboratories Raman Systems Div. to offer both instruments and applications in Raman spectroscopy. The partnership takes advantage of Renishaw's expertise in the manufacture of Raman spectrometers and microscopes...
Cryogenic Expansion Blurs Hubble Images
May 1, 1997 — Expanding nitrogen used to cool infrared detectors inside the Hubble Space Telescope's Near Infrared Camera and Multi-Object Spectrometer has caused one of the instrument's cameras to go out of focus. NASA scientists detected the foul-up shortly...
Israeli Conference Marks Industry's Anniversary
Apr 1, 1997 — JERUSALEM -- A glimpse into the future by the laser's discoverer and a retrospective on the development of holography highlighted the 10th Meeting on Optical Engineering held last month at Jerusalem's International Convention Center. Keynote...
Optical Sensor Keeps Tabs on Rocket Fuel
Apr 1, 1997 — MARLY-LE ROI, France -- Bigger is not always better -- especially when you are building rockets. A new optic sensor under development in France could provide flight engineers with the first pressure readings from inside the liquid gas fuel tanks...
Astronomers Rise Above the Chaos
Feb 1, 1997 — GREENBELT, Md. -- Astronomers at NASA's Goddard Space Flight Center are using chaos-control technology to make an infrared semiconductor laser system more effective for spectroscopy.The term chaos can be misleading, according to Gordon Chin, head of...
Fiber Optic Probe Identifies Hazardous Contaminants
Feb 1, 1997 — WASHINGTON -- Hazardous waste site assessment and remediation are receiving increased attention these days, and a new development from the US Naval Research Laboratory (NRL) should enhance these efforts.A fiber optic infrared reflectance probe that...
Hyperspectral Imager Sends Answers from Above
Feb 1, 1997 — In the Colorado River valley, farmers have been trying to keep crops alive with water that was apportioned by the federal government back in 1923. Unfortunately, the river reached its highest point in a century in 1923, leaving farmers with two...
Photomultiplier Tubes See the Light -- One Photon at a Time
Dec 1, 1996 — Dating archaeological finds, locating schools of fish, measuring food contamination, mapping the stars and monitoring pollution levels are all applications that requirer Raman spectroscopy. This article discusses appropriate optical fibers for each...
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