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(38,322 articles)
Popular News
Media Cybernetics Buys Assets of Definitive Imaging
Nov 1, 2002 — Image analysis software provider Media Cybernetics Inc. of Silver Spring, Md., has purchased the intellectual property and related assets of Definitive Imaging Ltd., which is a supplier of software for metallographic and materials science quality control. As a result of the acquisition, Media Cybernetics will expand its product offerings in the materials analysis market. It will continue to support the acquired company's MSQ software, which provides a quantitative method for analyzing and...
General Dynamics Unit Wins Army Contract for Telecom Upgrade
Nov 1, 2002 — General Dynamics Network Systems of Needham, Mass., has received four orders totaling $15.2 million from the US Army, which will expand its telecommunications infrastructure at Fort Leonard Wood, Mo., and upgrade data networks and infrastructure at...
Camera Captures Spheromak Plasmas
Nov 1, 2002 — The promise of limitless, cheap and clean energy from thermonuclear fusion has been intriguing scientists for decades, and it is all the more enticing as we come to terms with the environmental hazards and limited supply of...
Photonics Samples UV-Safe Clothing
Nov 1, 2002 — Skin cancer has been on the rise in the US, Australia and Europe for the past decade. More than 51,000 new cases are reported to the American Cancer Society each year. Dermatologists have recommended a battery of preventive measures, and photonics...
Frame Grabber Enables High-Speed Profiling
Nov 1, 2002 — Photonic component manufacturers depend on the accuracy and speed of optical metrology systems for the cost-efficient production of microelectromechanical system (MEMS) devices, thick films, optics, ceramics and advanced materials. These measurement...
Imaging Technique Hatches Egg-Sorting System
Nov 1, 2002 — Chickens headed for market fall into three subclasses: broiler birds, egg layers and breeders. Broiler birds, or meat chickens, are drawn entirely from the male population, because they grow faster than females. When a new group hatches, a...
Software Aids Chip Design
Nov 1, 2002 — According to the current roadmap for the semiconductor industry, by 2003 half of all chips will include transistors with gates smaller than the wavelength of radiation that the stepper used to create them. Because the old rule of "what you see is...
UV Produces Transparent Conductor
Nov 1, 2002 — A transparent electrical conductor has been produced from an insulating oxide by a team at the Tokyo Institute of Technology in Yokohama and the Japan Science and Technology Corp. in Kawasaki. The method incorporates hydrogen ions into the crystal...
Transparent Organic Cells Emit Blue
Nov 1, 2002 — European and Canadian researchers reported in the Oct. 21 issue of Applied Physics Letters a new method for the fabrication of light-emitting electrochemical cells for displays. The anode and cathode are made of indium tin oxide, and polyfluorene...
Laser Fabricates Terahertz Waveguides
Nov 1, 2002 — Massachusetts Institute of Technology researchers in Cambridge have fabricated solid-state platforms in crystalline structures that can generate and propagate terahertz polaritons. They are conducting further experiments to better characterize the...
Very Large Telescope Snaps Images of Radio Hot Spots
Nov 1, 2002 — A research group has imaged hot spots from the radio galaxy 3C 445 using optical and infrared cameras on the Very Large Telescope. The images show knots embedded in a diffuse optical emission that is created by the impact of a particle jet with the...
Rewritable Solitons Produced in VCSELs
Nov 1, 2002 — A team from Institut Non Lineaire de Nice in France, Poltecnico e Università di Bari and Università dell'Insubria, both in Italy, Imedea in Spain and the University of Ulm in Germany has written and erased arrays of stable cavity solitons as 10-µm...
Proposed 2 X 2 Switch Applies Photonic Crystals
Nov 1, 2002 — Collaborators at the University of Delaware in Newark and the US Air Force Research Laboratory at Hanscom Air Force Base, Mass., have modeled and analyzed the performance of 2-D directional coupler switches based on silicon pillars in air and on...
Photonic Fiber Drops Raman Threshold
Nov 1, 2002 — A group of scientists at Bath University in the UK have reduced the threshold power for stimulated Raman scattering by nearly two orders of magnitude using a photonic crystal fiber. Fabricated by capillary-stacking techniques, the fiber guided 6-ns,...
Laser Spectroscopy Displays 12-nm Resolution
Nov 1, 2002 — At Swiss Federal Institute of Technology (ETH) in Zurich, scientists have employed laser spectroscopy and scanning probe microscopy to resolve two molecules 12 nm apart in a crystal host. The technique, which also detected dipole-dipole coupling in...
Independent Photons Coalesce
Nov 1, 2002 — Quantum mechanics predicts that when two photons emitted simultaneously by parametric down-conversion and sharing identical mode properties meet at opposite sides of a beamsplitter, they will coalesce and depart the beamsplitter in the same...
Blue-Phase Liquid Crystal Acts as Laser
Nov 1, 2002 — Researchers at Kent State University in Ohio and Universidad Autonoma Metropolitana in Mexico City reported in the October issue of Nature Materials that they have observed lasing in optically pumped blue-phase liquid crystal. The effect, which they...
Imaging Gets the Drop on Radioactive Waste
Nov 1, 2002 — Radioactive waste disposal generally entails vitrifying the waste into a glassy solid. Initial processing can involve spraying the waste into an industrial flame reactor, where the intense heat evaporates benign components such as water. Given the...
UV/Blue Lasing Observed in Nanowires
Nov 1, 2002 — Building on earlier research that used near-field microscopy to capture lasing action of single ZnO nanowire arrays, scientists at the University of California, Berkeley, now have observed and characterized UV and blue laser action in single gallium...
Quantum-Dot Lasers Exhibit High Characteristic Temperature
Nov 1, 2002 — Researchers at the University of Texas at Austin have developed 1.3-µm InAs quantum-dot GaAs-based lasers whose characteristic temperature and low threshold current density may someday enable them to supplant InP-based lasers in fiber optic...
Single Laser Matches Transmission Record
Nov 1, 2002 — The record for optical data transmission has long since passed a terabit per second, but the feat generally has required the energy of multiple diode lasers. Scientists at the University of Central Florida have reported similar results using a...
Nanoporous Coatings Exhibit Low Refractive Index
Nov 1, 2002 — Researchers at Massachusetts Institute of Technology in Cambridge have developed an aqueous-based process to uniformly cover the surface of most materials with an antireflective layer. They say the method produces surfaces with antireflective...
Nd:YAG Replaces Spark Plug in Lean-Burn Engine
Nov 1, 2002 — Forget about putting a tiger in your tank; to really get your motor running, put a laser under the hood. Research scientists at the US Department of Energy's National Energy Technology Laboratory in Morgantown, W.Va., have demonstrated that...
Array Measures Ice Cloud Scattering
Nov 1, 2002 — Scattering from nonspherical ice crystals in the upper atmosphere interferes with satellite remote-sensing applications and can play a significant role in climatic changes. Employing a temperature- and humidity-controlled cold-vapor chamber to...
Hot Embossing Method Improves Polymer's Light Emission
Nov 1, 2002 — Incorporating wavelength-scale microstructures such as gratings can improve the properties of lasers and displays made from organic semiconductors. This typically is accomplished by using complex methods such as photolithography or chemical etching....
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August 2024
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