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(9,094 items)
Research & Technology News
Here Comes the Sun
Sep 1, 2008 — The shows ran concurrently and in the same convention center in San Francisco in July. The worst of times are currently found in the traditional semiconductor equipment market. According to projections released by the equipment and materials trade group SEMI, that market will decline 20 percent in 2008 but rebound with 13 and 6 percent growth in 2009 and 2010, respectively. The result is that the equipment market is forecast to be slightly smaller in 2010 than in 2007, $41.0 vs. $42.8...
Microdisplays: Coming Soon to an Eye Near You?
Sep 1, 2008 — Imagine strolling past a restaurant and having its menu hover translucently in your field of vision, or getting a call from friends and having a GPS-like map appear in front of you as a guide to their exact location. These types of “augmented...
Volcanoes Erupt Under Ice and Water
Sep 1, 2008 — Under the Arctic ice, a group of scientists has made a startling discovery, courtesy of a new camera. Studying an ultraslow-spreading midocean ridge, the team found evidence of explosive volcanic eruptions on the seafloor. Such eruptions were...
Building a Remote Refractive Index Sensor with Quantum Dots
Aug 1, 2008 — Whispering works best if done correctly and up close. That’s one explanation for a new type of remote refractive index sensor developed by a group from Texas A&M University in College Station. The researchers embedded quantum dots into...
Clinical Monitoring of AIDS Drugs
Aug 1, 2008 — Scientists from Erasmus Medical Centre in Rotterdam and from UMC in Nijmegen, both in the Netherlands, have joined forces with researchers from the Medical Research Council in Cambridge, UK, to develop an effective technique for measuring...
Faster Communications on Existing Infrastructure
Aug 1, 2008 — The 10-Gigabit Ethernet standard is encouraging faster data communications within local area networks, but intermodal dispersion effects limit the data rate on the standard optical fibre infrastructure in offices and factories. Two researchers from...
Flexible Connections for Flexible Solar Cells
Aug 1, 2008 — While today’s solar cells are costly and made out of silicon, tomorrow’s may be made out of plastic and be very inexpensive. However, these polymer solar cells must be flexible. That’s a problem for the device’s cathode and anode. These electrical...
Interpreting Images from Saturn
Aug 1, 2008 — Way beyond Saturn’s main rings lies the narrow, braided multistrand F ring, discovered by Pioneer 11 about 30 years ago. This unique region changes its appearance on a variety of timescales, presenting an interesting puzzle. Now astronomers from the...
Landslide Monitoring
Aug 1, 2008 — Loose sediment, rocks and weathered material usually remain stationary and stable on a slope. However, matter can be disturbed naturally by earthquakes or heavy rainfall, or by human activity such as road construction. When disturbed, the debris is...
Laser Pas de Deux Enhances Resolution in Time and Space
Aug 1, 2008 — To completely grasp the physics underlying such phenomena as cellular function, chemicals changing from one state to another, or the formation of cracks and fissures in polymer thin films, one must watch such events as they occur, as close up as...
Launching Lasers to Mars
Aug 1, 2008 — Scheduled for launch five years from now, the ExoMars spacecraft is designed to study the Martian environment, from the planet’s tectonics to its geochemistry. One of the primary goals, in fact, is to search for signs of past or present life. To...
Measuring Ice Crystals
Aug 1, 2008 — Climate change studies currently are hampered by incomplete knowledge of the radiative behaviour of ice crystals in clouds. The tendency of the crystals to flutter about a horizontal alignment affects their optical properties, and scientists from...
Modelling Photonic Crystal Fibres
Aug 1, 2008 — Physicists from Gdansk University of Technology in Poland and from Aston University in the UK have worked out a new way of modelling photonic crystal fibres with hexagonal cells and large airholes. These small-mode-area fibres have applications in...
Nanopatterning with Lasers and Microspheres
Aug 1, 2008 — Although it concerns the very small, optical nanopatterning has some very big problems. Available techniques are slow, hard to use, expensive or limited in what they can produce. Now Princeton University researchers Euan McLeod and Craig B. Arnold...
Snapshot of EuroLED 2008
Aug 1, 2008 — The fifth annual EuroLED conference held in West Midlands, UK, in June was a study in global networking — entertaining organizations and attendees with everything new about LEDs. Organizer Aston Science Park of Birmingham, also in the UK, proved...
Tunable Wavelengthsby Four-Wave Mixing
Aug 1, 2008 — Photonics specialists from Helsinki University of Technology and from Arctic Photonics of Jorvas, both in Finland, are using four-wave mixing (FWM) to produce tunable narrowband light in a microstructured optical fibre. The light has a pulse shorter...
An LCD Built with Graphene
Jul 1, 2008 — According to a team of researchers from the UK and Russia, thin sheets of carbon could improve LCDs. The group recently demonstrated that graphene — a two-dimensional layer of carbon — can be used to make the conducting transparent thin films...
Defect-Free Structures May Pave the Way to GaAs Lasers
Jul 1, 2008 — If you are an optoelectrical engineer trying to create semiconductor devices that emit light, here is some advice: Don’t let zinc blende get into your wurtzite. In recent years, gallium arsenide has gained traction as the basis for optoelectronic...
Fabricating Photonic Quantum Circuits in Silicon
Jul 1, 2008 — The future of quantum technologies could be written in sand, according to researchers from the University of Bristol in the UK. A group at the institution demonstrated high-fidelity quantum photonic circuits using waveguides made of silicon dioxide,...
High-Speed Nanoimprinting Gets on a Roll
Jul 1, 2008 — Se Hyun Ahn and L. Jay Guo of the University of Michigan, Ann Arbor, are on a nanopatterning roll. They recently demonstrated a high-speed roll-to-roll technique for imprinting that enables continuous fabrication of nanometer-scale structures on a...
LED-Pumped Polymer Laser Emits at 568 nm
Jul 1, 2008 — Semiconducting conjugated polymer materials are easy to fabricate into photonic devices, and their emission spans the visible spectrum. They would be attractive candidates for commercial lasers, but until now, they required pumping by another laser,...
Mode-Matching Technique May Enable Broad Telecom Bandwidths
Jul 1, 2008 — Erbium-doped fiber amplifiers (EDFAs) are widely credited with enabling the huge growth of fiber optic communications during the last decade of the 20th century. Because they could boost the amplitude of optical pulses traveling in fiber without...
Multimode Fiber Laser Generates Single-Mode Output
Jul 1, 2008 — Single-mode fiber lasers have the high beam quality required for many applications, but as their output power climbs, the intense intracavity power density in their tiny cores — typically ~10-μm diameter — causes nonlinear effects that sap the...
Parabolic Reflector Couples Between Fiber and Silicon-on-Insulator Waveguide
Jul 1, 2008 — Optical fibers and silicon-on-insulator waveguides both are crucial to today’s photonic systems, but coupling between the two is problematic. The small, tightly confined modal area in a silicon-on-insulator waveguide with high-index contrast...
UIowa to Assess Lab Damage
IOWA CITY, Iowa, June 18, 2008 -- It will be months before the full extent of flood damage sustained by the Iowa Advanced Technology Laboratories (IATL) is known, a University of Iowa official said Wednesday. The facility remains closed, with water from the nearby Iowa River in its...
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