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(38,316 articles)
Popular News
Quantum Dots Offer Single Photons
Apr 1, 2002 — Quantum key distribution systems promise to enable unbreakable codes for the transmission of sensitive data. A group at Toshiba Research Europe Ltd. and Cambridge University, both in Cambridge, UK, has reported the development of a crucial element for such systems, an electrically driven single-photon emitter. By introducing quantum dots into the intrinsic region of a GaAs PIN photodiode, researchers have developed an electrically driven source of single photons for quantum cryptography. The...
Ruthenium-Doped Nanotubes Fluoresce
Apr 1, 2002 — Using a chemical vapor-deposition technique, a research team from Pennsylvania State University in University Park and the Center for Applied Energy Research in Lexington, Ky., has fabricated ruthenium-doped multiwall carbon nanotubes that...
Raman Laser Displays 62-µW Threshold
Apr 1, 2002 — Raman lasers promise applications in telecommunications as sources for component testing and as pumps for erbium-doped fiber amplifiers, but they have tended to require significant input powers. Researchers at California Institute of Technology in...
Ringdown Caught with Single Shot
Apr 1, 2002 — A team from Los Gatos Research in Mountain View, Calif., has developed a modified version of ringdown spectroscopy that obtains information about a trace molecule's absorption spectrum over a large optical bandwidth with a single laser...
Fiber Measures Behavior of Adhesives
Apr 1, 2002 — At Corning Inc.'s Science and Technology Div. in Corning, N.Y., scientists have developed a technique that accurately predicts the photothermal behavior of the optical-path adhesives that connect photonic components in optical networks. With the...
Antenna Produces High-Energy Terahertz Radiation
Apr 1, 2002 — Researchers from the University of Electrocommunications in Tokyo and NEC Corp. in Kanagawa, Japan, have produced terahertz radiation with an energy density of 10 µJ/cm2 from a photoconductive semiconductor antenna. Using 0.5-ps pulses from a...
Optical Tweezers Expose DNA
Apr 1, 2002 — Researchers at Cornell University in Ithaca, N.Y., and University of Massachusetts Medical School in Worcester have used laser tweezers to reveal the uncoiling of DNA in a nucleosome. The work, which they reported in the Feb. 19 issue of Proceedings...
Pulse Shaping Increases CARS Resolution
Apr 1, 2002 — Coherent anti-Stokes Raman spectroscopy (CARS) is becoming the technique of choice for femtosecond time-resolved studies, say researchers at Weizmann Institute of Science in Rehovot, Israel, but its selectivity suffers because of the large bandwidth...
Nanocrystals Enable Near-IR Organic LEDs
Apr 1, 2002 — By incorporating InAs-based nanocrystals in a semiconducting polymer, a team at Technion-Israel Institute of Technology in Haifa and Hebrew University in Jerusalem has developed an organic LED that produces 1- to 1.3-µm tunable radiation. The team...
Laser Boosts Engine Efficiency?
Apr 1, 2002 — There are many engineers out there tinkering to improve the performance of the automobile engine. Marlan O. Scully of Texas A&M University in College Station has taken it a step further, with the addition of a "quantum afterburner" to the Otto...
Hologram Directs Atom Lithography
Apr 1, 2002 — A team at Universität Bonn and Universität Osnabrück, both in Germany, has combined holography and atom lithography to control the selective etching of a carbon-coated gold surface. The technique, which is described in the Feb. 25 issue of Physical...
Catalyst Yields Nanocarrots and Nanocomets
Apr 1, 2002 — At Georgia Institute of Technology in Atlanta, researchers investigating the use of molten gallium as a catalyst for the growth of silicon nanowires have fabricated novel silica nanowire structures. The groups of aligned nanowires resemble carrots...
Carbon Monoxide Detector Displays Supersensitivity
Apr 1, 2002 — A carbon monoxide sensor developed by researchers at Rice University in Houston, Lucent Technology Inc.'s Bell Labs in Murray Hill, N.J., and Physical Sciences Inc. in Andover, Mass., may find applications in the continuous monitoring of the...
Aerosols Brighten Clouds
Apr 1, 2002 — It was suggested 25 years ago that industrial aerosols promote cloud formation, thereby increasing the Earth's albedo and cooling it. Now a research team at Brookhaven National Laboratory in Upton, N.Y., and at Purdue University in West Lafayette,...
Waveguide Boosts Capillary Biosensor Sensitivity
Apr 1, 2002 — A capillary biosensor developed by researchers at the Naval Research Laboratory in Washington and the State University of New York in Binghamton displays a detection limit of 30 to 50 pg/ml, thanks to integrating waveguiding in the capillary. The...
China Broadband Joins Corning Venture in Chengdu
Mar 29, 2002 — CALGARY, Alberta, March 29 -- China Broadband Corp. said it has signed an Internet service agreement to provide data and value-added services to Corning's joint venture with Chengdu CCS Optical Fibre Corp., located in Chengdu, the capital of Sichuan...
Daily News Briefs
Mar 29, 2002 — Thomas Miller has joined LightLab Imaging as chairman and CEO, effective March 25. Paul Magnin will remain president and become COO. Lightlab specializes in optical coherence tomography for medical and biological applications. . . . EMCORE Corp....
CardioFocus Wins Clearance for Diode Laser
Mar 29, 2002 — NORTON, Mass., March 29 -- CardioFocus Inc. has received FDA 510(k) clearance to market its diode laser for use in surgery. This laser is used by clinicians with the accompanying Optimaze surgical ablation handpiece, previously cleared by the FDA...
Microvision, Omega Sign Reseller Agreement
Mar 29, 2002 — BOTHELL, Wash., March 29 -- Microvision has signed a distribution reseller agreement with Omega Systems Inc. in which Omega Systems will resell Microvision's Nomad wearable display to customers in the defense marketplace. Among the applications...
Daily News Briefs
Mar 28, 2002 — Alex Ferenczy, M.D., has been named medical director and chairman of the clinical advisory board of LifeSpex Inc., a biophotonics company developing light-based products for early cancer detection. . . . MCORE Corp., a provider of semiconductor...
DALSA Announces Definitive Agreement to Aquire CCD
Mar 28, 2002 — WATERLOO, Ontario, March 28 -- DALSA Corp. announced it has signed a sale and purchase agreement to acquire the CCD Image Sensors Business of Royal Philips Electronics, located in Eindhoven, Netherlands. This announcement follows and confirms...
Imaging Diagnostic Signs Agreement With Schering
Mar 28, 2002 — FORT LAUDERDALE, Fla., March 28 -- Imaging Diagnostic Systems Inc. announced it has signed a collaboration agreement with Schering AG, Germany, to evaluate the advantages of new fluorescence dyes developed by Schering for their potential to detect...
GSI Restructures Kanata Operations
Mar 28, 2002 — KANATA, Ontario, March 28 -- GSI Lumonics Inc. plans to consolidate its Systems business and its Laser Components business by the end of the fiscal year. With the restructuring, the Systems Business product lines will transfer to the company's...
New Hybrid Solar Cells Combine Nanotech with Plastics
Mar 28, 2002 — BERKELEY, Calif., March 28 -- A new generation of solar cells that combines nanotechnology with plastic electronics has been launched with the development of a semiconductor-polymer photovoltaic device by researchers with the US Department of...
Ciena to Cut Workforce by 650
Mar 28, 2002 — LINTHICUM, Md., March 28 -- Ciena Corp. is cutting about 650 jobs, or 22 percent of its work force. The cuts follow a reduction of about 400 jobs announced in February. The company said the latest job cuts would save about $150 million a year but...
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August 2024
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