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(38,343 articles)
Popular News
Turning Quantum Dots into Tiny ‘Lightbulbs’
Mar 1, 2007 — For anyone seeking a really small light source, researchers at MIT in Cambridge, Mass., have good news. The group has embedded quantum dots in structures similar to organic LEDs and has demonstrated light emission from single quantum dots at room temperature. “If you need a nanoscale light source — a lightbulb that is 5 nm big — we have it,” said MIT’s Vladimir Bulovic', an associate professor of electrical engineering and computer science. He noted that the technique yields very small...
Blue Fiber Laser Generates More Than 200 mW
Mar 1, 2007 — Small blue lasers are difficult to come by but have many interesting applications, including laser displays, fluorescence microscopy, flow cytometry and spectroscopy. Recently, scientists at the Center for Optics, Photonics and Lasers (COPL) in...
Electrically Tunable Bragg Gratings in Polymer Fiber
Mar 1, 2007 — The capability of fiber Bragg gratings to reflect only resonant wavelengths while transmitting all others has found numerous applications in telecom, optical sensing and other technologies. Because the resonant wavelengths can be shifted by heating...
Active Feed-Forward Improves Linear Optics Quantum Computing
Mar 1, 2007 — In one-way quantum computing, applying a feed-forward technique — in which each measurement is dependent on previous results — helps to surmount quantum measurement randomness. Researchers from the University of Vienna in Austria, Harvard University...
Trends in Vision
Mar 1, 2007 — In factory automation, the constant need for productivity and quality improvement is generating a strong demand for sensor solutions based on smart cameras and vision sensors. In choosing a vision system, the foremost consideration is ease of...
Automotive Sealing and Bonding
Mar 1, 2007 — The use of sealants and adhesives is increasing as automotive designers try to improve fuel efficiency by reducing vehicle weight. Safety, aesthetics and durability are all critical factors and, when taken together, promote greater use of structural...
Machine vision helps create a smart dartboard
Mar 1, 2007 — An interdisciplinary group of students from Technical University of Munich in Germany recently put machine vision to the test. Although experts had deemed the project as unfeasible or illusory, the students created a high-speed dartboard that moves...
Modern Technology Follows Ancient Paths
Mar 1, 2007 — For almost 2000 years, ancient Central American villagers followed narrow footpaths while making spiritual retreats to dozens of distant burial grounds. Frequent single-file processions caused the terrain to erode, resulting in trenches nearly 10...
CERAMIC COMPONENTS
Mar 1, 2007 — The 252-page “Ceramaseal Product Catalog” from CeramTec North America Corp. presents an expanded selection of hermetically sealed components, including thermocouples, isolators and viewports, that are built to endure extreme conditions, such as an...
USABLE LIGHT
Mar 1, 2007 — Future Lighting Solutions, a division of Future Electronics Inc., has unveiled the Usable Light Tool, an online resource that enables lighting designers to model and evaluate power LED performance for lighting in real-world environments. In the...
POWER SUPPLIES
Mar 1, 2007 — A manufacturer of high-voltage power supplies, Ultravolt Inc. has released its updated “Product Catalog,” which provides specifications for the new high-power 30-kV DC/DC power supply module, part of the HP “8C-30C” series. Details on power,...
TESTING TUTORIAL
Mar 1, 2007 — Available from Keithley Instruments Inc., the “Simplified Test Toolkit” is an interactive tutorial on CD that provides technical seminars to help engineers create effective test and measurement applications. The seminars cover such areas as wafer...
OPTICS CATALOG
Mar 1, 2007 — A full-color four-page brochure from Rochester Precision Optics outlines the company’s offerings in optical engineering and lens design and in the high-volume production of molded glass aspheres, including multicavity tooling, injection-mounted...
FACTORY AUTOMATION
Mar 1, 2007 — Panasonic Electric Works Corp. of America has launched a redesigned Web site to represent its Automation Controls System Div. Featuring tools for factory automation, the portal enables engineers and other users to search, organize and compare...
STOCK OPTICS
Mar 1, 2007 — The “Stock Parts List 2007” from Meller Optics Inc. specifies the company’s overrun optics, which are available in a wide variety of materials, sizes and configurations. The list, targeted to designers, provides an option for obtaining customized...
NANOPARTICLES
Mar 1, 2007 — Alfa Aesar, a Johnson Matthey company, has released an updated brochure titled “Nanoparticles and Dispersions: Exploring the Possibilities.” Downloadable from the company’s Web site, the document includes expanded offerings of pure metal and alloy...
PHOTONICS TOOLS
Mar 1, 2007 — The “2007 Product Guide” from New Focus Inc., a division of Bookham Inc., describes the company’s offerings. It features an expanded OEM section, which includes the GuideStar beam-alignment and Granite light-management systems, and a new vacuum and...
WASHERS, SPACERS
Mar 1, 2007 — The “2007 Washer Catalog” from Boker’s Inc. is available in print and as a download in the Resources section of the company’s Web site. Offerings include washers and spacers with outside diameters ranging from 0.080 to 5.140 in. The products are...
Sap Sampling Made Simple
Mar 1, 2007 — Making maple syrup has long been a rite of early spring. The process is labor-intensive: tapping sugar maples, gathering around 30 to 50 buckets of sap per gallon of syrup, stoking the sugarhouse fires to boil down the liquid, careful watching and...
OPTICAL COMPONENTS
Mar 1, 2007 — Meadowlark Optics Inc. has released its “Transitions 2007-08 Polarization Handbook,” which specifies the company’s component products, including new wide-field retarders, tunable optical filters and ultrahigh-contrast precision polarizers. It...
Raman Scattering Improves When Substrates Are Adorned with Silver and Gold
Mar 1, 2007 — Gold may glitter, but silver really shines when it comes to substrates for surface-enhanced Raman scattering. SERS can augment a Raman signal by 14 to 15 orders of magnitude, which makes the technique invaluable for research. Repeatable SERS results...
NIR Method Developed for Testing Frying Oil Quality
Mar 1, 2007 — French fry lovers, rejoice! A quick, reliable and relatively easy method has been developed that uses spectroscopy to monitor the quality of the frying oil into which so much tasty modern food is immersed. Existing methods of testing frying oil...
Testing Wine in the Mid-Infrared
Mar 1, 2007 — To the connoisseur’s standard methods of testing wine using taste, smell and sight, scientists are adding another: mid-infrared spectroscopy. A team from Hardy Wine Co. of Reynella and from the Australian Wine Research Institute of Glen Osmond, both...
Nanomaterials Create Optical Coating That Is Almost Reflection Free
Mar 1, 2007 — An optical coating engineered from nanomaterials has exhibited virtually no reflection, almost equaling the refractive index of air. Researchers at Rensselaer Polytechnic Institute in Troy, N.Y., reported in the March issue of Nature Photonics their...
A Viable Substitute for the X-Ray Laser?
Mar 1, 2007 — Practical x-ray lasers would provide a revolutionary advance in medical imaging and advanced lithography, but several fundamental roadblocks have prevented their development. Now scientists at the University of Colorado at Boulder have...
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