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chemicals News
Color-Changing Array Identifies Odors
CHAMPAIGN, Ill. -- CHAMPAIGN, Ill. -- For years scientists have been attempting to emulate a pretty good chemical detector: the human nose. Now an array of chemical sensors may provide a straightforward process for identifying smells that is far more sensitive. The array consists of metalloporphyrins deposited on a silica gel. The metalloporphyrins are produced by attaching a metal atom, such as tin, cobalt or iron, to a tetraphenylporphyrinate molecule. The different molecules respond differently to the prese...
Consortium Designs Color Laser Marking System
Oct 1, 2000 — Laser-maker Lambda Physik Inc. of Fort Lauderdale, Fla., has joined a consortium of European companies to develop a 1-kHz diode-pumped solid-state laser system capable of emitting three wavelengths. The laser has successfully decorated polymeric...
Watertight Spectrometer Relies on Cool Light
Oct 1, 2000 — Not long ago, BASF AG used a benchtop spectrometer and a cuvette to ensure that certain chemicals being shipped from its plant in Ludwigshafen, Germany, were free of impurities. The task detained the shipment a few hours and left the potential for...
IR Imager Uses Missile Technology
WEST LAFAYETTE, Ind. -- WEST LAFAYETTE, Ind. -- A form of infrared imaging developed by the military for heat-seeking missiles is helping researchers rapidly identify catalysts that could improve chemical manufacturing processes and pollution-control systems. The imaging...
Lambda Physik Teams with European Consortium to Develop Colored Laser Decorating of Plastics
Aug 1, 2000 — Using its Diode Pumped Solid-State 1-kHz laser system, capable of emitting three wavelengths, Lambda Physik has built a highly flexible marking technology capable of marking various plastic substrates. The new technology is the result of the System...
Up, Up and Away
WASHINGTON -- WASHINGTON -- Helium is so cheap and plentiful that it is used to fill Mickey Mouse balloons for children’s parties. That’s the finding, however obvious, of a report issued in May by the National Research Council on the commercial use of...
Antimissile Laser Passes Field Test
Jul 1, 2000 — TRW Inc.’s Space & Electronics Group of Redondo Beach, Calif., reported that the Tactical High Energy Laser has passed its initial live-fire test at White Sands Missile Range in New Mexico. The megawatt-class chemical laser destroyed an...
Portable Spectrometer Reduces Mill Downtime
Jul 1, 2000 — When a paper mill suspects contamination in the production line, the manufacturer faces costly downtime. Technical support specialists must be called in to test for the buildup of various deposits and to design a solution with the proper chemical...
A Little Hard Time Does Photochemistry Good
NEW ORLEANS -- NEW ORLEANS -- A technique under development at Tulane University and the University of British Columbia in Vancouver, Canada, promises to advance asymmetric photochemistry. Although current approaches allow chemists to produce unique variants of...
New Material Cools to -100 °C
EAST LANSING, Mich. -- EAST LANSING, Mich. -- Many applications await the development of efficient, inexpensive, low-temperature thermoelectric coolers. Current passing through a thermoelectric material carries away heat, cooling the material and its surroundings....
Small Particles Could Find Big Uses
URBANA, Ill. -- URBANA, Ill. -- At the University of Illinois, a researcher may be on the way to something big by starting small. Physics professor Munir Nayfeh has developed a technique for creating nanoparticles out of bulk silicon. When excited, the...
3D Systems Creates Tunability Materials Technology
May 31, 2000 — VALENCIA, Calif., May 31 -- 3D Systems Corp., in conjunction with Ciba Specialty Chemicals, is currently patenting what it calls tunability : technology capable of creating a solid object with multiple physical properties out of the same material....
Microsensors Tackle Hazardous Waste
CINCINNATI -- CINCINNATI -- Researchers from the University of Cincinnati have developed a highly selective microsensor that the US Department of Energy (DoE) may use in its efforts to monitor or clean up the Hanford nuclear weapons facility in Washington state....
Military Laser Gets Ready for Industry
URBANA, Ill. -- URBANA, Ill. -- The chemical oxygen-iodine laser technology that is the basis of the US Air Force’s Airborne Laser aircraft could soon be harnessed for such commercial applications as dismantling and decommissioning nuclear power plants,...
Trio Closes In on Remote Chemical Sensor Project
ALBUQUERQUE, N.M. — A collaboration among Sandia National Laboratories, the Massachusetts Institute of Technology in Cambridge and the Honeywell Technology Center in Minneapolis promises to produce a functioning prototype remote sensor by 2001 that will allow a person...
Plastics Learn to Love Lasers
Oct 1, 1999 — For many years, Nd:YAG, CO2 and high-power semiconductor lasers have been successfully cutting, welding and marking on metals, ceramics and other materials. You need look no further than your computer keyboard or the buttons on your automobile radio...
NHD, Kodak Announce Distribution Agreements
Sep 23, 1999 — CLEVELAND, Sept. 23 -- NHD Inc. announced the signing of two comprehensive contracts with Eastman Kodak Co.'s Health Imaging Div. The first allows all of NHD's authorized Kodak distribution channels to sell Kodak DryView laser-imaging systems; the...
Hyperspectral Aerial Imaging May Conquer Canker
IMMOKALEE, Fla. — Airborne hyperspectral imaging, a military technology originally designed to pick out camouflaged vehicles from surrounding foliage, may soon help detect a different concealed enemy: citrus canker. This contagious bacterium causes citrus trees to...
Microscope Records Chemical Makeup
MARTINSRIED, Germany -- MARTINSRIED, Germany -- Researchers at Max Planck Institut fur Biochemie have combined the atomic force microscope’s ability to define surface features with the infrared absorption techniques of spectroscopy to record chemical composition....
Novel LEDs Could Eliminate Bacteria
LONDON — A new resonant cavity light-emitting diode (LED) could help to eradicate antibiotic-resistant bacteria, emitting the necessary light (670 to 680 nm) to activate special bug-killing chemicals. Conventional LEDs are already used in photodynamic...
Optical Fiber Senses Spills
MANCHESTER, UK — The rapid, pinpoint accuracy of optical time domain reflectometry could find new use in detecting pipeline leaks and spills. Energy and chemical companies now visually examine pipelines from a vehicle or helicopter, but finding leaks can be...
Photonics Center Launches Three Companies
Jun 1, 1999 — The Boston University Photonics Center, in conjunction with the private venture firm Marenghi & Co., has established three commercial corporations. The aim of each company is to develop innovative technology originating at the center into...
DSM Desotech Acquires Dupont's Solid Imaging Business
May 1, 1999 — DuPont has sold its Somos solid imaging business to DSM Desotech Inc., a business unit of DSM NV, headquartered in The Netherlands. DSM Desotech produces performance materials, polymers and industrial chemicals for the pharmaceutical, foodstuffs and...
UV Light Cleans up Shop
Apr 1, 1999 — Bacteria are not welcome on the metal machining lines at General Motors Corp. But that doesn't stop them from showing up in fluids used to remove metal shavings. To improve on the chemical agents used to control bacteria, GM will purchase a system...
Chemical Sensor Offers Sensitive Real-Time Solution
Feb 1, 1999 — A sensor developed at the Georgia Tech Research Institute could make detection of chemical contaminants highly portable and sensitive, and also enable in situ monitoring of a range of chemicals. It is a planar optical waveguide chip with 13...
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June 2024
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