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Cold Atoms Image Microwave Fields
GARCHING, Germany, August 13, 2010 — Microwaves are an essential part of modern communication technology. Mobile phones and laptops, for example, are equipped with integrated microwave circuits for wireless communication. Sophisticated techniques for measurement and characterization of microwave fields are an essential tool for the development of such circuits. A novel technique developed by a group of scientists led by Prof. Theodor W. Hänsch of Max Planck Institute of Quantum Optics and Ludwig-Maximilians-Universität...
Help From the Dark Side
BERLIN, August 12, 2010 — Spectroscopic techniques are among the most important methods by which scientists can look inside materials. They exploit the interaction of light waves with a given sample. Now, using x-ray absorption spectroscopy, researchers from...
Laser Etching Process Makes Glass Biochips
AACHEN, Germany, Aug. 12, 2010 — Using laser etching, a new process for manufacturing glass biochips for medical engineering has been created by researchers at the Fraunhofer Institute for Laser Technology ILT. The process, In-volume Selective Laser Etching (ISLE), enables...
ID’ing Molecules from the Briny Deep
ABERDEEN, UK, and ZURICH, Switzerland, Aug. 11, 2010 — In a pioneering research project, scientists at IBM and the University of Aberdeen have collaborated to “see” the structure of a marine compound from the deepest place on the Earth using an atomic force microscope (AFM). The results of...
Lasers Improve Conventional Welding
HANOVER, Germany, Aug. 11, 2010 — Laser Zentrum Hannover (LZH) recently announced two new laser techniques that are improving conventional welding. Laser stabilization makes gas metal-arc welding (GMAW) faster and better. On the left, GMAW without laser stabilization; on the...
Redrawing Microscopy’s Boundaries
BELFAST, Northern Ireland, August 11, 2010 — Two Andor back-illuminated electron-multiplying CCD (EMCCD) cameras have been instrumental in helping Steven Chu, a Nobel laureate and current US Secretary of Energy, redraw the boundaries of optical microscopy. By developing an active...
Edible Optics, Implantable Electronics
MEDFORD, Mass., Aug. 11, 2010 — A decade of research has yielded new uses for an ancient material – silk fibers. Thanks to their amazing mechanical properties as well as their looks, silk fibers have been important materials in textiles, medical sutures, and even armor for...
Getting Insight into Insect Sight
BIELEFELD, Germany, August 10, 2010 — Despite their tiny brains, bees have remarkable navigation capabilities based on their vision. Now scientists have recreated a lightweight imaging system that mimics a honeybee’s field of view, which could change the way we build mobile robots...
Silicon Exhibits Retrograde Melting
CAMBRIDGE, Mass., Aug. 10, 2010 — A new silicon material has been produced that actually melts as it cools off, which could lead to applications in solar cells and other devices. A tiny silicon chip — the glowing orange square at the center of this special heating device...
THz Semiconductor Laser Revealed
CAMBRIDGE, Mass. & LEEDS, England, Aug. 10, 2010 — Applications in terahertz science and technology may be getting a boost thanks to a new terahertz (THz) semiconductor laser that emits beams with a much smaller divergence than conventional THz laser sources. The metamaterial patterns are...
‘Pin Art’ Mass Produces Nanowires
GAITHERSBURG, Md., Aug. 9, 2010 — Researchers at the National Institute of Standards and Technology (NIST) have cultivated many thousands of nanocrystals onto silicon, a step they say will bring us closer to reliable mass production of semiconductor nanowires. Dubbed...
Atom's Electrons Move in Real Time
BERKELEY, Calif., Aug. 9, 2010 — Using ultrashort flashes of laser light, scientists have directly observed the movement of an atom’s outer electrons for the first time. Through a process called attosecond absorption spectroscopy, the international team of scientists...
Imaging Technique Erases Background Noise
SEATTLE, August 9, 2010 — Spotting a single cancerous cell that has broken free from a tumor and is traveling through the bloodstream to colonize a new organ might seem like finding a needle in a haystack, but a new imaging technique from the University of Washington (UW) is...
The Future Ain’t What It Used to Be
Aug 9, 2010 — Images of tomorrow, of course, are all about the attitudes of today. Take a look at any comic, TV show or movie set in the future and you’ll see what its creators thought about the prospects of the human race. Will we manage to create a...
Green Laser Absorption Loss Culprit ID’d
SANTA BARBARA, Calif., Aug. 6, 2010 — Computational scientists at the University of California, Santa Barbara (UCSB) believe they have identified the source of absorption loss in green lasers. The team investigated the light absorption by carriers in nitride lasers and identified the...
High IR Levels in Some Green Lasers
GAITHERSBURG, Md., Aug. 6, 2010 — “Beware the dim laser pointer,” NIST researchers have recently said. According to a team led by physicist Charles Clark at the National Institute of Standards and Technology the group has found that a green laser pointer emitted almost...
JILA Comb Purifies Semiconductor Process
BOULDER, Colo., Aug. 6, 2010 — In a step that could aid semiconductor manufacturing, scientists have invented an optical frequency comb that detects gas impurities that hamper production of photonic devices. Purity of ingredients is a constant concern for the semiconductor...
Light-Controlled Membrane Stops, Starts Gas Flow
ROCHESTER, N.Y., Aug. 5, 2010 — A newly invented membrane can stop and start gas flow simply by changing the color of the light shining on its surface. According to researchers at the University of Rochester’s Laboratory for Laser Energetics, the new membrane can block...
Extravagant Fiction Today...Cold Fact Tomorrow
Aug 4, 2010 — In the oppressive heat of a summer’s day in A.D. 2331, the tinkerer shuffled deliberately across the foyer of the long-abandoned museum he called home. The late-afternoon sun tried to push its way past the polyglass entrance, which had been...
Light-Amplifying Metamaterial Created
WEST LAFAYETTE, Ind., Aug. 4, 2010 — Researchers have overcome a fundamental obstacle in using new "metamaterials" for radical advances in optical technologies, including ultrapowerful microscopes and computers and a possible invisibility cloak. The metamaterials have been...
Taking the Twinkle Out of the Stars
TUSCON, Ariz., Aug. 4, 2010 — Star-gazers beware. Astronomers have developed a way to take the twinkle out of the night sky, but it’s really not as sinister as it may sound. Green guide star laser beams, used to sense turbulence in the atmosphere that badly degrades large...
Fly Eyes Inspire Solar Cells
UNIVERSITY PARK, Penn., Aug. 3, 2010 — Solar Cells Inspired by Fly Eyes UNIVERSITY PARK, Penn., Aug. 3, 2010 — Rows of tiny raised blowfly corneas may be the key to easy manufacturing of biomimetic surfaces, surfaces that mimic the properties of biological tissues, according to a...
Hot Tubbing with IR Lasers
BOULDER, Colo., Aug. 3, 2010 — Using an infrared laser light, researchers at JILA have demonstrated that they can quickly and precisely heat water in a “nano bathtub.” These tiny sample containers are used for microscopy studies of the biochemistry of single molecules...
New Invisibility Cloak Made of Glass
HOUGHTON, Mich., Aug. 2, 2010 — From Tolkien’s ring of power in “The Lord of the Rings” to Star Trek’s Romulans, who could make their warships disappear from view, from Harry Potter’s magical cloak to the garment that makes players vanish in the...
Photon Triplets Generated
WATERLOO, Ont., Aug. 2, 2010 — An international research team achieved a longstanding milestone in quantum optics research — the direct generation of photon triplets. This result has been sought for years but never achieved until now. An illustration of the triple...

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