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Research & Technology News

Apr 1, 1999 — Almost three years after its launch in February 1996, the multispectral imager onboard NASA's Near Earth Asteroid Rendezvous spacecraft imaged its eventual orbiting partner, the siliceous asteroid 433 Eros in an unintended flyby. A December 1998 orbital adjustment failed, but the craft is now trailing Eros and will catch up with it by February 2000. Besides acquiring scientific data, the imager functions as the navigation camera. During its approach, the multispectral imager -- a 537 x...

Tissue Welding Gets Helping Hand

Apr 1, 1999 — Tissue welding is a laser-based surgical technique that is still in the research stage, and several groups are involved in exploring and improving the method's viability. Researchers at Lawrence Livermore National Laboratory have developed a device...

Tyco Submarine Systems Achieves 640 Gb/s per Fiber

Apr 1, 1999 — Tyco Submarines Systems Ltd., based in Morristown, N.J., has demonstrated in a laboratory experiment transmission of 64 10-Gb/s WDM channels on a single fiber path over a distance of 7200 km, representing an overall capacity of 640 Gb/s per fiber....

All-Photonic Circuits at Hand

Mar 1, 1999 — Nanovation Technologies Inc. has entered the testing phase of its development of a fully integrated optical circuit, a technology that promises to deliver faster, higher-capacity communications to the marketplace by the end of the year, in packages...

Atomic Force Microscope Could Draw Tiny Circuits

Mar 1, 1999 — Scientists at Northwestern University in Evanston, Ill., have found a new application for atomic force microscopes: fabricating nanoelectronic circuitry. Researchers at the university discovered that the lab tool could transfer molecules with...

Ballast Water Purified with UV Waves

Mar 1, 1999 — If "bioinvasions" has a futuristic sound to it, the future is now. With the speed and volume of global travel, even organisms can find themselves quickly transplanted to a new environment. In some cases, that can spell disaster for the fragile...

Company Promises Painless Glucose Monitoring

Mar 1, 1999 — Diabetics around the globe have yearned for an alternative to the lancet and needle to monitor blood glucose levels. The wait may soon be over. Norcross, Ga.-based SpectRx Inc. has developed a device that painlessly monitors a person's blood glucose...

Nichia's Blue Diodes Find a Home

Mar 1, 1999 — Barely a month after Nichia Chemical Industries Ltd. announced the first shipments of its blue laser diodes, a second company has rushed to incorporate the diodes into a laser system touted as a more powerful blue light source for spectroscopy. In...

Phased out by Coherent Control

Mar 1, 1999 — A "textbook" laboratory demonstration of a basic quantum physical principle could lay the groundwork for practical applications in photochemistry, forensics, quantitative analysis and quantum computing. Using ultrafast optical techniques,...

Polishing System Takes Pressure off Making Aspheres

Mar 1, 1999 — As the use of aspherical optical components broadens, the industry is trying to overcome the challenges that the processing of those surfaces present. Researchers at the Delft University of Technology have developed a finishing process that uses a...

School of Optics Hosts Inaugural Conference

Mar 1, 1999 — The Center for Research and Education in Optics and Lasers (CREOL) kicked off an inaugural conference Jan. 11 and 12 to celebrate the opening of its School of Optics at the University of Central Florida in Orlando. Distinguished members of the...

Spectrometer Made Smaller, Less Expensive

Mar 1, 1999 — Scientists at the University of Ulm in collaboration with LaserSpec Analytik GmbH have unveiled an atomic absorption spectrometer that uses a laser diode as a light source and a tungsten coil to atomize samples -- advances that could lead to...

Tethered AFM Offers Operators More Flexibility

Mar 1, 1999 — A researcher at the National Research Council of Canada has adapted a commercial atomic force microscope (AFM) to perform near-field scanning in a tethered mode. This could have a significant impact on testing photonic devices such as waveguides and...

Thomson Scattering Made Relative

Mar 1, 1999 — In what is being hailed as groundbreaking research that could provide hints about how light and matter interact, physicists at the University of Michigan Center for Ultrafast Optical Science have shown that both the electric and magnetic fields of...

Tuning Diodes

Mar 1, 1999 — A burgeoning fiber optic communications industry is nourishing advances in support devices, not the least of which is the development of tunable laser diodes. Research groups are exploring methods to achieve tunable laser diodes. One group has come...

Uncooled IR Detector Could Enable Cheaper Cameras

Mar 1, 1999 — MSI engineers are working to develop an uncooled infrared detector that will enable the production of inexpensive IR cameras. Such a detector could penetrate such markets as vision assistance systems for automobiles and industrial monitoring...

UV Light Reveals Dinosaur Organs

Mar 1, 1999 — A team of scientists has used UV radiation to examine the internal organs of a baby dinosaur fossil discovered in Italy more than 15 years ago. The fossil was originally found embedded in a limestone formation north of Naples. When it was...

Volcanic Gas Measured at a Safe Distance

Mar 1, 1999 — Volcanic gases offer important clues to atmospheric and subsurface processes, but methods that have proved safe have not proved easy. Scientists using ground-based IR remote-sensing techniques to analyze volcanic plume gases must often contrive...

Altimeter Maps Mars' North Pole

Feb 1, 1999 — The Mars Orbiter Laser Altimeter payload on the Global Surveyor spacecraft has generated the first comprehensive three-dimensional map of the martian north pole. The altimeter's 50-cm-diameter telescope gathered more than 2.5 million laser pulses...

Artificial Tongue Relies on CCD

Feb 1, 1999 — A team of researchers from the University of Texas at Austin has developed a device that mimics the function of the human tongue. The electronic device contains a 3 x 3 array of polyethylene glycol/polystyrene beads bearing chromogenic indicator...

Chemical Sensor Offers Sensitive Real-Time Solution

Feb 1, 1999 — A sensor developed at the Georgia Tech Research Institute could make detection of chemical contaminants highly portable and sensitive, and also enable in situ monitoring of a range of chemicals. It is a planar optical waveguide chip with 13...

Diode Laser Turns up the Power in the Mid-IR

Feb 1, 1999 — Research at Northwestern University has introduced new options for semiconductor lasers operating in the mid- infrared range. Led by professor Manijeh Razeghi, scientists at the university's Center for Quantum Devices have developed high-power...

Disordered Films, Powders Exhibit Lasing Capabilities

Feb 1, 1999 — Semiconductor lasers may be brighter than light-emitting diodes (LEDs), but that advantage certainly comes at a premium. Now researchers at Northwestern University have demonstrated lasing in highly disordered films and powders, a development that...

Gauging Semiconductor Temperature

Feb 1, 1999 — As any good cook knows, a recipe's cooking temperature is critical. For physicists constructing novel semiconductors, knowing the temperature has been a problem. But thanks to a new light-based technique developed at the University of Arkansas,...

Kodak Imaging Sensors Make Second Trip to Mars

Feb 1, 1999 — On the much-publicized Mars Pathfinder mission, Eastman Kodak Co.'s digital imaging technology played an essential role in surveying the landscape of the distant planet. In December, the company's digital imaging sensors were again aboard a NASA...

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