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Research & Technology News
Packed Atoms Boost Atomic Clock Performance
BOULDER, Colo., Feb. 7, 2011 — JILA scientists have eliminated collisions between atoms in an atomic clock by packing the atoms closer together. The discovery can boost the performance of experimental atomic clocks made of thousands or tens of thousands of neutral atoms trapped by intersecting laser beams. JILA is jointly operated by the National Institute of Standards and Technology (NIST) and the University of Colorado Boulder. Intersecting laser beams create "optical tubes" to pack atoms close together,...
Sharp Images from a Tiny Cube
TOKYO, Feb. 7, 2011 — Microscopically small nanostructured arrays of lenses that can record or project amazingly sharp images in brilliant colors are being demonstrated by Fraunhofer research scientists at the nano tech 2011 trade show in Tokyo from February 16-18. ...
Si Alternative is Better Than Graphene
LAUSANNE, Switzerland, Feb. 7, 2011 — Smaller and more energy-efficient electronic chips could be made using molybdenite, a material developed in Switzerland. EPFL's Laboratory of Nanoscale Electronics and Structures (LANES) published a study showing that this material has distinct...
Laser Welding Process Fuses Plastics
AACHEN, Germany, Feb. 4, 2011 — A new laser welding process that emits light at the specific wavelengths at which plastic absorbs laser radiation makes it possible to fuse two transparent plastic components together for the first time. This advance could revolutionize...
FluxData Camera Heads to Space
ROCHESTER, N.Y., Feb. 3, 2011 — On Jan. 22, 2011, a multispectral imager built by FluxData Inc. was launched into space aboard the Japanese HTV-2 mission heading to the International Space Station (ISS). In the upcoming months after arrival, the imager, a key component of the...
Physicist Play ‘Hide-and-Seek’ with Photons
SANTA BARBARA, Calif., Feb. 3,2011 — Inspired by a trick known as "shell game," researchers at UC Santa Barbara have demonstrated the ability to hide and shuffle "quantum-mechanical peas" — microwave single photons — under and between three microwave resonators, or...
X-ray Laser Lights Up Little Wonders
MENLO PARK, Calif., Feb. 3, 2011 — Two new studies demonstrate how the unique capabilities of the world’s first hard X-ray free-electron laser — the Linac Coherent Light Source, located at the Department of Energy’s SLAC National Accelerator Laboratory — could...
‘C Dots’ Head to Clinical Trial
ITHACA, N.Y., Feb. 2, 2011 — “Cornell Dots” — brightly glowing nanoparticles — may soon be used to illuminate cancer cells to aid in diagnosis and treatment. The FDA has approved the new technology for the first clinical trial in humans. It is the first...
Gemini Shines First Sodium Laser ’Constellation’
LA SERENA, Chile, Feb. 2, 2011 — A new era in high-resolution astronomy began with the successful propagation of a 5-star sodium laser guide star “constellation” in the skies over Cerro Pachón in Chile on Jan. 22, 2011. The Gemini South laser guide star...
Smart Lasers Could Make Biopsies Painless
EAST LANSING, Mich., Feb., 2, 2011 — Biopsies in the future may be painless and noninvasive, thanks to smart laser technology being developed at Michigan State University. To test for skin cancer, patients today must endure doctors cutting away a sliver of skin, sending the...
‘Air Laser’ Sniffs Bombs, Pollutants from Afar
PRINCETON, N.J., Feb. 1, 2011 — A new laser sensing technology that generates a laser beam out of thin air may allow soldiers to detect hidden bombs from a distance and scientists to better measure airborne environmental pollutants and greenhouse gasses. Researchers at Princeton...
A supercool new scanning probe microscope
GAITHERSBURG, Md. – A new ultra-low-temperature scanning probe microscope is being billed by its creators as the most advanced in the world. The microscope, dubbed ULTSPM, was developed by researchers at the National Institute of Standards and Technology (NIST), the...
Assessing water quality with fluorescence
RESTON, Va. – Fluorescence measurements could help scientists monitor source water quality, according to a recent US Geological Survey (USGS) study of Oregon’s McKenzie River. The focus of the study was the type, amount and source of dissolved organic...
Creating multimetal nanoparticles
RALEIGH, N.C. – Digestive ripening, a technique used to make single-metal nanoparticles, also can be extended to create nanoparticles that consist of two metals and that also have tunable properties, according to a study from researchers at North Carolina State...
Highly unidirectional “whispering gallery” microlasers
CAMBRIDGE, Mass. – Highly collimated unidirectional microlasers have been demonstrated, and their creators say they will have a wide range of new photonics applications, including sensing and communications. Researchers at Harvard University, in collaboration with...
Laser light shows for quantum computing
DURHAM, N.C., and MADISON, Wis. – Quantum computers have moved a step closer with a beam-steering system that can focus bursts of laser light onto single atoms. The system can be compared to the projectors used in laser light shows, but it is far faster and smaller, and accurate to...
Nanoscale 3-D images shed light on Earth’s core
PALO ALTO, Calif. – Physicists can study the Earth’s inner history, thanks to a technique that provides a picture of minerals interacting at ultrahigh temperatures and pressures. The new method, high-pressure nanoscale x-ray computed tomography, is being...
Plasmon lasers at room temperature
BERKELEY, Calif. – A new technique allows plasmon lasers to operate at room temperature, a “major step toward applications” for the lasers, according to Xiang Zhang, principal investigator, who is also a University of California professor of mechanical...
Practical, tunable 3-D microdroplet laser
LJUBLJANA, Slovenia – Electronics could get smaller, faster, cheaper to make and higher in precision, thanks to a microdroplet 3-D laser system. “This is the first practical 3-D laser ever produced,” said Igor Musevic, who developed the laser with Matjaz...
Single QD nanowire photodetectors
DELFT, Netherlands – In another step toward quantum computing, researchers have made a photodetector based on a single nanowire, in which the active element is a single quantum dot (QD) with a volume of only 7000 nm3. The nanowire, which was made of indium phosphide,...
Smaller features, faster wafers
WEST LAFAYETTE, Ind. – As Moore’s law – the doubling every two years of the number of transistors on an integrated circuit – moves closer and closer, the semiconductor industry is looking for ways to make microchips faster and faster. And a new 13.5-nm...
Solid-state terahertz lasers warm up
BOSTON – Terahertz rays have proved hard to generate cost-effectively, as solid-state lasers so far have been unable to produce terahertz rays without supercooling. Some physicists even have speculated that frequency and temperature are linked by some...
Stable optical lift proved
ROCHESTER, N.Y. – The existence of stable optical lift, or the use of a beam of light to move and manipulate particles in the micrometer scale, has finally been proved. Applications include astrophysics, biotechnology and microelectronics. Someday it could be used to...
Type-II InAs/GaSb superlattices lead to new IR camera
EVANSTON, Ill. – A novel IR camera based on Type-II InAs/GaSb superlattices produces images with much higher resolution than previous IR cameras could produce. The camera’s long-wavelength IR (LWIR) focal plane array can provide IR images in the dark and...
NRL Field Tests Laser Acoustic Propagation
CRANE, Ind., Jan. 31, 2011 — A research team at the Naval Research Laboratory (NRL) led by physicist Dr. Ted Jones of the Plasma Physics Division, performed the first successful long distance acoustic propagation and shock generation demonstration of their novel underwater...
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