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Green FS Laser Achieves Record Power
AACHEN, Germany, May 20, 2011 — The first-ever laser to generate an average power of 280 W at a 515-nm wavelength with perfect beam quality now is ready to operate at the touch of a button. The turnkey laser is based on a Yb:Innoslab amplifier with frequency doubling. Fraunhofer ILT said no other laser system has ever offered more output with diffraction-limited beam quality in the visible spectral range. As part of the Korona cooperation project, which aims to produce coherent radiation with wavelengths in the...
In Auto Making, Lasers Take the Lead
AACHEN, Germany, May 20, 2011 — Automotive manufacturers are looking to lasers for more efficient and economical production methods. Lasers are being used to join, drill, structure, cut and shape various materials to reduce weight and friction while streamlining the production...
‘Google Earth’ Views of Bladder Possible
SEATTLE, May 19, 2011 — A more automated approach to imaging bladders in cancer patients could be cheaper, more comfortable and more convenient than current practices for doctors and patients alike. The new system — designed at the University of Washington —...
'Sighted' Wheelchair Successfully Test-Driven
LULEå, Sweden, May 19, 2011 — An electric wheelchair that uses a laser scanner to create a 3-D map of its surroundings and transfers the information to a haptic robot, enabling a visually impaired driver to navigate around obstacles, has been successfully tested. The...
Diamond Aerogel Could Improve a Range of Optics
LIVERMORE, Calif., May 19, 2011 — By combining high pressure with high temperature, Lawrence Livermore National Laboratory researchers have created a nanocrystalline diamond aerogel that could improve the optics for something as big as a telescope or as small as the lenses in...
Solar-Thermal Flat Panels Generate Electricity
CHESTNUT HILL, Mass., May 19, 2011 — High-performance nanotech materials arrayed on a flat panel platform have demonstrated seven to eight times higher efficiency than previous solar thermoelectric generators, opening up solar-thermal electric power conversion to a broad range of...
New Superresolution Technique Reveals Cell Secrets
ALBUQUERQUE, N.M., May 18, 2011 — A new superresolution microscopy technique is answering longheld questions about how and why a cell’s defenses fail against some invaders, such as plague, while successfully fending off others, such as E. coli. The approach is revealing...
An IP Address for Every Lightbulb?
EINDHOVEN, Netherlands, May 17, 2011 — A new smart lighting solution makes an Internet-enabled, energy-efficient lighting network a reality not only for businesses but also for consumers trying to save energy at home. NXP Semiconductors' GreenChip system enables users to monitor,...
New System Tracks Contours During Laser Materials Processing
AACHEN, Germany, May 16, 2011 — Fraunhofer Institute for Laser Technology has developed a process monitoring system that can precisely measure the position and speed of a laser beam processing point on a surface. The tracking system minimizes deviations from desired contour and...
Perfect Laser Welds Created for Car Bodies
FREIBURG, Germany, May 16, 2011 — A new process using a camera that generates temperature images is enabling perfectly controlled surface laser welding, offering car makers a greater benefit in comparison with full-penetration welding. Together with colleagues from the IFSW...
Solar Smackdown: Photovoltaics vs. Photosynthesis
PHOENIX, May 16, 2011 — Because photosynthesis and photovoltaics harvest energy from the sun in distinctly different ways and produce different fuels, it is difficult to compare energy conversion efficiency. "In order to make meaningful comparisons between photosynthesis...
Malaria Detection Using Cell Phones Wins Gates Grant
BEERSHEBA, Israel, May 15, 2011 — Ben-Gurion University of the Negev researcher Alberto Bilenca has been awarded a prestigious grant from the Bill & Melinda Gates Foundation to develop a fast, low-cost device to accuracy diagnose malaria without the need for blood collection in...
QDs, Fullerenes Paired for Nanoscale PVs
UPTON, N.Y., May 13, 2011 — A surface-based assembly of colloidal quantum dots and carbon-based fullerene nanoparticles is producing promising power-generating units for miniaturized electronics. Scientists at the US Department of Energy’s (DoE) Brookhaven National...
Superstable Laser Shines in Minivan Test
BOULDER, Colo., May 13, 2011 — In a step toward taking the most advanced atomic clocks on the road, physicists at the National Institute of Standards and Technology (NIST) have designed and demonstrated a superstable laser operating in a cramped, vibrating location — a...
Graphene Optical Modulators Could Speed Communications
BERKELEY, Calif., May 12, 2011 — Digital communications speed limits could soon be broken, thanks to a new graphene-based optical device that could theoretically reach as high as 500 GHz for a single modulator. Xiang Zhang, an engineering professor at the University of...
Sensor Detects Tiny Traces of Explosives
CAMBRIDGE, Mass., May 12, 2011 — MIT researchers have created a detector based on fluorescing carbon nanotubes that is so sensitive it can sense a single molecule of an explosive. To create the sensors, Michael Strano and his colleagues at the institute coated carbon...
Instrument Improves IR Spectroscopy by Factor of 100
SAN SEBASTIÁN, Spain, May 11, 2011 — A novel instrument records infrared spectra using a thermal source to gain a resolution 100 times better than conventional IR spectroscopy. The technique could be used to analyze the chemical compositions and structures of nanoscale materials in...
Nanoantennas Hold Promise for IR Photovoltaics
HOUSTON, May 11, 2011 — A new device that can act as an optical antenna by collecting and focusing light, and as a photodiode by converting light into a current of electrons, has been developed by Rice University researchers. This nanoscale device, dubbed nanoantenna, has...
Pigment-Free Feathers Inspire Mirrorless Laser
NEW HAVEN, Conn., May 11, 2011 — Bright, colorful birds, the feathers of which get their color not from pigment molecules but from a largely random distribution of embedded air pockets, are the inspiration for a new mirrorless laser developed at Yale University. The Rufous-collared...
"Swiss Cheese" Solar Cells Use Less Silicon
COLLEGE PARK, Md., May 10, 2011 — A new design for thin-film solar cells that requires significantly less silicon — and may boost their efficiency — is the result of an industry and academia collaboration between Oerlikon Solar in Switzerland and the Institute of...
Edge States of Graphene Nanoribbons Discovered
BERKELEY, Calif., May 10, 2011 — Using a scanning tunneling microsope, researchers have made the first precise measurements of the "edge states" of well-ordered graphene nanoribbons. For nearly two decades, theorists have envisioned that nanoribbons, depending on their width...
Lawmakers Lobbied for Level S&T Funding
WASHINGTON, May 10, 2011 — Members of the Optical Society (OSA), along with those from other scientific associations and societies, attended Capitol Hill Day 2011 last week to speak with their senators and representatives about sustained federal funding for science and...
Flower Power: Fractal Flowers Could Help Return Eyesight
EUGENE, Ore., May 9, 2011 — University of Oregon researcher Richard Taylor is on a quest to grow “flowers” – seeded from nanoparticles – that will help people who have lost their sight to see again. These flowers are not roses or tulips but fractals...
Laser Beam Steering Made More Efficient
RALEIGH, N.C., May 9, 2011 — The ability to precisely control the direction of a laser beam in an energy-efficient and inexpensive way has been discovered by researchers from North Carolina State University. "In many cases, it is much easier to redirect a laser beam at a...
Single Atom Stores Quantum Info
GARCHING, Germany, May 9, 2011 — Quantum information has been stored in a single rubidium atom, a technique that can be used in principle to design powerful quantum computers and to network them with each other across large distances. Quantum computers will one day be able to...

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