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(38,343 articles)
Popular News
Marching Toward 1-s Movie Downloads
Apr 1, 2007 — Researchers at IBM’s T.J. Watson Research Center in Yorktown Heights, N.Y., have developed a novel optical transceiver that can move data at a rate of 160 Gb/s — fast enough to enable consumers to download a high-definition movie in about one second. The device uses 16 vertical-cavity surface-emitting lasers, each of which modulates a 985-nm continuous-wave laser beam at >10 GHz, which the company says is a record for individual devices in a transceiver. The device’s 16-channel...
How Temperature Affects Silicone Encapsulants in High-Brightness LED Applications
Apr 1, 2007 — Historically, high temperatures have negatively affected the function of LED chips; however, recent designs from companies such as Philips Lumileds Lighting Co. reportedly perform at temperatures as high as 185 °C without compromising output. The...
Building Hybrid LEDs by Directly Writing Blended Polymers
Apr 1, 2007 — In animal breeding, hybrids can be superior to either parent. The same may be true for LEDs, given recent research from the University of Strathclyde in Glasgow, UK, and Imperial College London, where investigators fabricated hybrid...
A Single Dot Marks the Spot for Nanowire LEDs
Apr 1, 2007 — From wires nanometers in size, an industry hopes that mighty lights will grow. That goal — as well as the ability to perform quantum optics experiments — has gotten a boost, thanks to researchers from the Kavli Institute of Nanoscience at Delft...
Highly Efficient Near-Infrared OLED Created
Apr 1, 2007 — By using a different type of doping agent, researchers have significantly enhanced the efficiency of organic LEDs (OLEDs) that emit in the NIR region. Diodes with such capabilities have applications for night-vision displays and sensors. An...
AFM Measures Photocurrent Distribution in Solar Cells
Apr 1, 2007 — The power conversion efficiency of organic solar cells remains below desired levels, in part because variations in processing conditions alter film morphologies. Current microscopy techniques can provide information on these structural effects;...
Laser Annealing Helps Broaden Response of Quantum-Dot LEDs
Apr 1, 2007 — A wider emission band is better for broadband light sources, which are important for spectrum-sliced wavelength division multiplexing, fiber-based data transmission and optical coherence tomography applications. Consequently, scientists have been...
Mass-Producing Infrared Metamaterials
Apr 1, 2007 — Some metamaterials have a negative refractive index, a physical property not found in natural substances. This property could enable the production of telecommunication components with very low noise, or it could permit the fabrication of...
Relationship of Temperature Rise to Incident Laser Power in Optical Traps
Apr 1, 2007 — Optical trapping often is used to evaluate nanometer-size systems by introducing up to hundreds of milliwatts of laser power into the focus. The resulting power intensity can raise local temperatures and induce unwanted physical, chemical or...
A Spectrometer That Spans Octaves
Apr 1, 2007 — Singing the musical scales provides a hint as to why users of grating-based spectrometers must be careful: After beginning with do, the scale ends up back at the same note but an octave higher. In spectrometers, diffraction orders also repeat,...
Newly Created Molecules Drive Lithography Technique
ATLANTA, March 30, 2007 -- New two-photon absorbing molecules that are sensitive to light at short wavelengths are helping to produce 3-D polymer line structures as small as 65 nm wide. The 3-D multiphoton lithography technique could compete with existing processes for making...
Cutting-Edge Research to be Discussed at CLEO/QELS 2007
BALTIMORE, Md., March 30, 2007 -- One of the industry's leading events on laser science, CLEO/QELS (Conference on Lasers and Electro-Optics and the Quantum Electronics and Laser Science Conference), will present more than 1500 talks on cutting-edge optics and photonics research when...
Optics, Photonics Research to be Discussed
BALTIMORE, Md., March 30, 2007 -- One of the industry's leading events on laser science, CLEO/QELS (Conference on Lasers and Electro-Optics and the Quantum Electronics and Laser Science Conference), will present more than 1500 talks on cutting-edge optics and photonics research when...
OFC/NFOEC: 'Cool' Fiber Light Source Inspected
ANAHEIM, Calif., March 30, 2007 -- A light source based on fiber-optic technology that could improve the inspection of food, produce, paper, currency, recyclables and other products was the topic of a presentation at OFC/NFOEC 2007. Industrial processes for inspecting food products...
'Cool' Fiber Light Source Inspected
ANAHEIM, Calif., March 30, 2007 -- A light source based on fiber-optic technology that could improve the inspection of food, produce, paper, currency, recyclables and other products was the topic of a presentation at OFC/NFOEC 2007. Industrial processes for inspecting food products...
Siemens Suspends Employee After Searches
MUNICH, Germany, March 30, 2007 -- Siemens AG said Thursday it suspended another employee after the Munich Office of Public Prosecution conducted another search, at the beginning of the week, in conjunction with the "known irregularities at the Communications Group (Com)." Two arrest...
Del Mar Photonics to Represent Tekhnoscan in North America
Mar 30, 2007 — Del Mar Photonics Inc. of San Diego will be representing Russia-based Tekhnoscan in the US, Canada and Mexico, it was announced this week. Tekhnoscan manufactures continuous-wave, single-frequency ring titanium:sapphire and dye lasers for atom...
ioimage, Micron Add CMOS Imaging Technology to Security Camera
Mar 30, 2007 — Security video camera maker ioimage of Herzliya, Israel, announced it has partnered with semiconductor solutions provider Micron Technology of Boise, Idaho, to develop a new 3-megapixel IP (Internet protocol) security camera with built-in video...
2007 Descartes Prize Winners Announced
Mar 29, 2007 — The HESS (High Energy Stereoscopic System) telescope was one of three research projects funded by the European Commission to share in the €1m ($1.3 million) 2007 Descartes Prize for Research announced earlier this month in Brussels at the start of...
Barloworld: Melles Griot Sale Being Finalized
JOHANNESBURG, South Africa, March 28, 2007 -- Industrial brand management company Barloworld Ltd. announced yesterday that negotiations for its Melles Griot subsidiary have reached an "advanced stage" and are expected to be concluded soon. Melles Griot, a manufacturer of optical systems,...
Corning, OSA Foundation Announce Student Competition
Mar 28, 2007 — Corning Inc. and the OSA Foundation announced at OFC/NFOEC this week in Anaheim, Calif., that they will establish the Corning Outstanding Student Paper Award Competition, to debut at OFC/NFOEC 2008. The competition is being funded through an...
Corning, OSA Announce Student Competition
ANAHEIM, Calif., March 28, 2007 -- Corning Inc. and the OSA Foundation announced at OFC/NFOEC this week in Anaheim, Calif., that they will establish the Corning Outstanding Student Paper Award Competition, to debut at OFC/NFOEC 2008. The competition is being funded through an...
Imago Scientific Instruments Names Bill Flecky VP Sales
Mar 28, 2007 — Imago Scientific Instruments of Madison, Wis., a maker of LEAP atom probe microscopes, announced the appointment of Bill Flecky as vice president of sales. “His 20-plus years of experience serving the semiconductor and research markets with...
MRI Creator, Nobel Laureate Paul Lauterbur Dies
CHAMPAIGN, Ill., March 28, 2007 -- Paul C. Lauterbur, who was awarded a Nobel Prize in 2003 for his pioneering work in the development of magnetic resonance imaging, died Tuesday at his home in Urbana, Ill., from kidney disease. He was 77. Paul C. Lauterbur A member of the faculty at...
Force of Light Sets Fluid in Motion
CHICAGO & TALANCE, France, March 28, 2007 -- By shining a laser beam through a soapy liquid, an international research team has shown that it is possible to manipulate small quantities of liquid using only the force of light. The technique might offer a new way to control the flow of fluids...
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