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Research & Technology News
Elbit Systems, Technion Partner on Eye-Tracking Research
Jun 16, 2008 — Defense electronics company Elbit Systems Ltd. of Haifa, Israel, and the Haifa-based Israel Institute of Technology (Technion) have signed a joint vision systems research agreement, under which Elbit will award grants to selected Technion undergraduate and graduate students and researchers in the electrical engineering department over the next five years. The vision system researchers will also have access to Elbit's advanced eye-tracking laboratory. Engineers in the eye-tracking field will...
Adding Laser Beams: The Best of Both Worlds
Jun 1, 2008 — The combined illumination provided by two automobile headlights is twice that provided by a single headlight. However, it doesn’t work that way with lasers. Even if the lasers are aligned with closely spaced parallel beams — so that the beams...
Detecting Nanoparticles in a Flame
Jun 1, 2008 — A team of scientists from Università di Napoli and from Istituto di Ricerche sulla Combustione, both in Italy, and from Lund University in Sweden has directly measured combustion-generated nanometer-size organic carbon particles within a propane...
Dual-Wavelength Ring Laser Is Step-Tunable Across 20 nm
Jun 1, 2008 — Stable, single-mode, dual-wavelength lasers have important applications in fiber sensors, in optical instrumentation and in communications based on wavelength division multiplexing. Recently, Shilong Pan and his colleagues at Tsinghua University in...
Easy-to-Tune All-Fiber Bandpass Filter
Jun 1, 2008 — Tunable bandpass filters are crucial components in numerous photonic applications, including telecommunications. All-fiber filters eliminate the need to couple into bulky and lossy external components, and many approaches to all-fiber tunable...
Etching with Gold Enables Improved Deep-UV Antireflective Optics
Jun 1, 2008 — The ability to diffuse or eliminate reflections is an important part of optics involving ultraviolet and deep-UV wavelengths. Antireflection coatings, which form interfering structures of low and high refractive indices, are ubiquitous. However,...
Highly Conductive and Color-Coded Carbon Nanotubes Produced
Jun 1, 2008 — The explosive growth of flat panel displays and other electrochromic devices has been fueled in part by transparent thin-film technology that conducts electricity but does not interfere with image quality. Indium tin oxide is the thin film of...
Image-Processing Methods Reconstruct Archival Audio Recordings
Jun 1, 2008 — Point-and-click mp3 files make it hard to appreciate the first attempts to capture sound on glass, wax, tinfoil or even paper. Many of those records, albeit fragile and often noisy, survive. Carl Haber and his colleagues at Lawrence Berkeley...
Laser Analysis of Strawberries
Jun 1, 2008 — Phenolic compounds in fruits and vegetables enhance their nutritional value, so it is useful to identify and quantify the various native compounds. Scientists from Leibniz Institute for Agricultural En- gineering Potsdam-Bornim and from Technical...
Laser Sorts Moving Droplets in Lab on a Chip
Jun 1, 2008 — A paper by three physicists from Université Bordeaux I in France describes a new and highly effective method of sorting and routing nanolitre droplets flowing through microchannels. The technique will be useful in chemical microreactors and...
Observing Laser-Shocked Tin Substrates
Jun 1, 2008 — When a shock wave generated by a laser beam or similar concentrated force bounces off a free surface, the material can undergo shock-induced fragmentation. Although commonly encountered in engineering and physics, the phenomenon remains poorly...
Powerful Femtosecond Laser Induces ‘Electrical Effects’ during Thunderstorms
Jun 1, 2008 — Although considerably less destructive than earthquakes, lightning is nonetheless one of the great unpredictable forces Mother Nature inflicts on mankind. Just as some scientists try to understand and predict earthquakes, others study the dynamics...
Understanding Smog by Measuring Light Absorption
Jun 1, 2008 — Haze lingering over cities may look fairly similar from place to place, but its composition can vary greatly. In some regions, industrial coal smoke predominates, whereas in others, automotive exhaust makes significant contributions. Researchers...
Northrop Grumman, UCF Ink Development Deal
May 22, 2008 — Defense contractor Northrop Grumman Corp. announced today it is forming a partnership with the University of Central Florida in Orlando to develop advanced optic and photonic technologies for military and defense applications. Under the five-year...
A Simpler Way to Build an Optical Acidity Detector
May 1, 2008 — A team of researchers in Spain has devised a fluorescent surface molecular sensor for the detection of acidity. The sensor could find application in industry, clinical analysis and environmental sampling. The team consisted of researchers from...
Capturing the Colors of a Plastic Bubble
May 1, 2008 — Everyone loves the bright rainbow colors of a soap bubble, and young children often cry when these delicate objects burst. However, Fumiyoshi Ikkai of Nihon L’Oreal KK in Kawasaki, Kanagawa, Japan, now has found a way to capture and preserve this...
Choosing the Better Bus Standard
May 1, 2008 — Which bus standard is better for machine vision? A recently released study by Fraunhofer Institute for Photonic Microsystems (Fraunhofer IPMS) in Dresden, Germany, tries to answer that question. Commissioned by Sony Image Sensing Solutions, the...
Finding Out How a Drop of Liquid Moves
May 1, 2008 — When studying the interactions of liquids and solid surfaces, such as is occasionally required in semiconductor and biomaterials research, scientists keep in mind several rules of thumb. One is that the force required to slide a drop of liquid down...
For a Cheaper Camera, Use Curved Silicon
May 1, 2008 — For all the benefits silicon brings to imaging, it does have a drawback: Silicon sensors are flat. Now a group from Stanford University in California has demonstrated a way to curve monolithic silicon structures that are fabricated in a standard...
Gas-Assisted Embossing and UV Curing Combine to Make Microlens Arrays
May 1, 2008 — Individual microlenses may be small, but a large array of them can have a big impact — and present some big challenges. Because microlens arrays are a key optical component in large-format LCD TVs and elsewhere, there is a need for low-cost and...
Nanoantennae Direct Light from Molecules
May 1, 2008 — Radio and microwave antennae enable modern conveniences such as listening to the radio, watching television, mobile phone communication and wireless Internet access. Relatively recently, antennae that receive and direct visible light have been...
Tiny Fiber Fabry-Perot Created with Femtosecond Pulses
May 1, 2008 — Most Fabry-Perot interferometers in optical fiber are intrinsic; that is, they are formed in the fiber core between a pair of reflectors. The alternative is an extrinsic Fabry-Perot, which is formed in the air between two sections of the fiber core....
Unique Cavity Demonstrates Highest Optomechanical Coupling
May 1, 2008 — Photons are nearly ideal for investigating quantum phenomena: They are easy to generate and have well-defined states and straightforward interactions with matter. Quantum phenomena in macroscopic mechanical systems, on the contrary, are difficult to...
A Continuously Variable Optofluidic Aperture
Apr 1, 2008 — Optofluidics technology brings to photonics the advantages of easily fabricated and inexpensive components, of miniaturization and of great flexibility. Recently, scientists at National University of Singapore reported fabricating an optofluidic...
Active Multipass Geometry Boosts Pulse Energy
Apr 1, 2008 — Scientists from the University of Konstanz and from Trumpf Laser GmbH + Co. KG in Schramberg, both in Germany, have achieved pulse energies of more than 13 μJ from a thin-disc laser operating in air. These ultrashort pulses have applications in...
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