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(38,336 articles)
Popular News
Coherent Anti-Stokes Raman Scattering System Uses Chirped Pulses
May 1, 2006 — Using a variant of coherent anti-Stokes Raman scattering that employs chirped femtosecond pulses, researchers at the University of California, Berkeley, hope to reveal new details regarding stellar and planetary formation. The spectromicroscopy technique, which they have demonstrated to be suitable with liquid and solid samples, will be used to examine interstellar dust particles that were returned to Earth on NASA’s Stardust space probe in January. The coherent anti-Stokes Raman...
Cavity Ringdown Spectroscopy Monitors Ethylene
May 1, 2006 — The plant hormone ethylene, which regulates growth and development, can lead to the overripening of fruits and vegetables. Ethylene from plants as well as from sources such as engine exhaust, therefore, is closely controlled in greenhouses, in...
Mid-IR Spectrometer Incorporates Difference-Frequency
May 1, 2006 — Scientists at Istituto Nazionale di Ottica Applicata of the Consiglio Nazionale delle Ricerche in Pozzuoli, Italy, have demonstrated a 2.9- to 3.5-µm integrated cavity output spectrometer that employs a difference-frequency generator as its source....
Fluorescence Spectroscopy Identifies Kamut
May 1, 2006 — Kamut, the brand name of a variety of wheat that is believed to have been cultivated in ancient times and that reportedly has a higher nutritional value than traditional wheat, commands a premium price. As a result, there is a desire among suppliers...
Standing-Wave Spectrometer May Fill Instrumentation Gap
May 1, 2006 — Researchers at International University Bremen and at Forschungszentrum Jülich, both in Germany, have demonstrated a standing-wave spectrometer that consists of a partially transmissive optoelectronic detector and a mirror. Compared with that of a...
Hybrid Plasmonic Nanostructures May Improve Spectroscopic Techniques
May 1, 2006 — Nanorice, tiny metallic particles shaped like grains of rice, combines the plasmonic properties of nanorods and nanoshells to enable its application in surface plasmon resonance and surface-enhanced Raman spectroscopies for molecular sensing....
Nanoparticle-Loaded Thermosensitive Microgel Changes Color
May 1, 2006 — A hybrid material whose optical properties change color with temperature may find a place in biomedical applications such as drug delivery. Developed by Haruma Kawaguchi and Daisuke Suzuki of Keio University in Yokohama, Japan, the material...
Quantum Dots May Enable New Radiation Detectors
May 1, 2006 — The work of a pair of scientists at Lawrence Livermore National Laboratory in Livermore, Calif., indicates that quantum dots may serve as suitable scintillator materials for the development of high-resolution room-temperature gamma-ray detectors....
White Phosphorescent OLED Avoids Exciton-Blocking Layers
May 1, 2006 — A research team at Tsinghua University in Beijing has reported that exciton-blocking layers can be eliminated from a white phosphorescent organic LED (OLED) through the proper choice of different hosts for the red and blue emissive layers in a...
Efficient White OLED Employs Down-Conversion
May 1, 2006 — A white organic LED (OLED) incorporating a blue phosphorescent dye and a down-conversion phosphor has achieved a luminous efficacy of 25 lm/W. Reported by investigators at Osram Opto Semiconductors Inc. in San Jose, Calif., and at Osram GmbH in...
Aberration Correction Enables 3-D Imaging Akin to Confocal Optical Technique
May 1, 2006 — Aberration-corrected scanning transmission electron microscopy offers users the ability to perform 3-D imaging similar to confocal microscopy, a group at Oak Ridge National Laboratory in Tennessee has reported. The technique can probe sample volumes...
Geometric Model Improves Cantilever-Based Sensing
May 1, 2006 — Micromachined cantilevers in atomic force microscopes and sensors provide precise measurements of everything from molecular binding to acceleration, but their sensitivity can present a problem. A reflected laser beam typically is used to measure...
Confocal Raman Microscope Exposes Diffusion Kinetics
May 1, 2006 — Using confocal Raman microscopy, researchers at the University of Utah in Salt Lake City are measuring the diffusion of molecules into polymer particles. The work could help people get their medicine continuously and could help clean up the...
New Organic LED Designs Presented
May 1, 2006 — Organic LEDs (OLEDs) are of interest as low-cost replacements for LCDs because they are easier to fabricate and do not require a backlight to function, potentially making them more energy efficient. Two groups of researchers at National Taiwan...
Scope Overboard!
May 1, 2006 — Researchers at Dalhousie University in Halifax, Nova Scotia, Canada, have developed a submersible holographic microscope that simplifies 3-D imaging of tiny marine life down to 100 m under the sea. Whereas such devices formerly weighed in at several...
Virtual Workout for Lazy Eyes
May 1, 2006 — Amblyopia, or “lazy eye,” is a condition in which one eye is forced to work harder than the other and the less-used eye’s vision progressively degenerates. The traditional treatment for the problem has been to cover the good eye with a patch for...
Not Just A Sudoku Solver
May 1, 2006 — They didn’t set out to find the key to the popular number puzzles called Sudoku, but this was an extra bonus for researchers whose loftier purpose was to resolve a biological imaging problem concerning x-ray diffraction microscopy. What they came...
LASERS, OPTICS
May 1, 2006 — The 1456-page “Newport Resource 2006/2007” catalog from Newport Corp. details more than 15,000 products for making, managing and measuring light, while providing tutorials and technical reference information for engineers, scientists, educators and...
CAMERA SITE
May 1, 2006 — The Web site created by Basler Vision Components offers information about digital cameras for industrial use. Among its features is the “camera selector,” which allows customers to enter criteria such as interface, resolution and speed to find the...
FO SPLICING
May 1, 2006 — The Light Brigade has issued a menu-based DVD titled “Fiber Optic Splicing,” representing the sixth release in its Staff Development series. With professionally filmed laboratory and field footage and detailed graphics, the videodisc is structured...
IR OPTICS
May 1, 2006 — Available from Infrared Optical Products, the 40-page catalog “Optical Products for the InfraRed” details lens systems, infrared filters, spherical and cylindrical lenses, circular and Brewster windows, plano and concave partial reflectors,...
VACUUM TECHNOLOGY
May 1, 2006 — Kurt J. Lesker Co. has published its 2006 “Vacuum Technology Products” catalog, which features 900 full-color pages of photos, drawings and technical specifications for more than 14,000 items. The eighth edition includes standard and custom...
CUTTING TOOLS
May 1, 2006 — A Web site to assist toolmakers in the production of natural diamond tools has been launched by Element Six BV. The portal is designed to serve as a direct source for natural diamond-cutting tool blanks, which are identified by photographs,...
MOTION CONTROL SITE
May 1, 2006 — The updated Web site of Danaher Motion is designed to provide an integrated motion control portfolio, representing the company’s brands, including Kollmorgen, Thomson, Dover and Portescap. It was created to help design engineers learn about motion...
LASER METERS
May 1, 2006 — The revised Web site of Coherent Inc. features a laser measurement system Product Finder function to facilitate the selection of laser power and energy meters for specific applications. The company offers more than 100 laser sensor options and...
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