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Research & Technology News
Boltasseva Honored by MRS for Novel Optics
WARRENDALE, Pa., March 12, 2013 — Alexandra Boltasseva, a Purdue University assistant professor who developed novel materials for advanced plasmonic, metamaterial and transformation optics devices, is the recipient of the 2013 Materials Research Society’s (MRS) Outstanding Young Investigator Award.
Organic Phototransistors Made with Nanowires
ULSAN, South Korea, March 12, 2013 — High-performance organic phototransistors (OPTs) based on single-crystalline n-channel organic nanowires could miniaturize electronic and optoelectronic devices, yielding higher light sensitivity than their bulk counterparts.
AFM-IR IDs Chemicals at Nanometer Scale
URBANA, Ill., March 11, 2013 — Atomic force microscopy (AFM) has been used to measure and characterize materials at the nanometer scale for more than two decades, but a new AFM technique now can measure a material’s chemistry and chemical composition.
Breast Cancer Laser Technique Faces First Human Trials
EXETER, England, March 8, 2013 — A laser diagnostic test, which ultimately could lead to an instant diagnosis of breast cancer at the time of a mammogram, will for the first time be evaluated using excised human breast tissue and lymph nodes. The study is being funded by a grant...
Flex-Grid Prevents Network Traffic Jams
BARCELONA, Spain, March 8, 2013 — A flexible-grid system that controls connections in optical networks can also redirect traffic to other networks, avoiding gridlock.
Material Converts Ultrasound Waves into Optical Signals
LONDON, March 7, 2013 — Ultrasound images have never looked sharper, thanks to a new metamaterial that converts ultrasound waves into optical signals, providing high-resolution images for biomedical applications.
Creator of GRIN LED Wins Lemelson-Rensselaer Student Prize
TROY, N.Y., March 6, 2013 — A doctoral student in materials science and engineering who developed a method to manufacture brighter, more energy-efficient LEDs is the recipient of the 2013 Rensselaer Polytechnic Institute (RPI) Lemelson-Rensselaer Student Prize.
Spectroscopy Method Could Lead to Better Optical Devices
PROVIDENCE, R.I., March 6, 2013 — A new spectroscopy method that takes advantage of a fundamental property of thin films — interference — could help make better use of these materials in optical devices like LEDs and solar cells.
IR Camera Detects Main Cause of Acid Rain
MADRID, March 5, 2013 — A new infrared camera that detects sulfur dioxide — a main cause of acid rain — and other pollutants could help scientists identify and control such emissions at an early stage, before significant damage is done.
Manipulating Light on Superconducting Chips
SANTA BARBARA, Calif., March 5, 2013 — Light manipulated on a superconducting chip using a switch that shapes released photons in different waveforms could forge new pathways to building the quantum devices of the future — including superfast and powerful quantum computers.
Light’s Polarization States Measured Directly
ROCHESTER, N.Y., and OTTAWA, Ontario, Canada, March 4, 2013 — There may be a way around Heisenberg’s famous Uncertainty Principle, a law of the quantum world that says precise measurement is impossible.
Delicate systems observed with quantum physics
BARCELONA, Spain – Groups of photons prepared in certain quantum states can noninvasively probe ultrasensitive objects such as individual atoms or living cells, overcoming the standard quantum limit for the first time. The results from the Institute of Photonic...
Electrons Accelerated by Laser in a Vacuum
LOS ANGELES, March 1, 2013 — Accelerating a free electron with a laser has been a longtime goal of solid-state physicists, and now two UCLA scientists have demonstrated the acceleration of electrons by a laser in a vacuum.
FEL pulse temporal profile made in a FLASH
SAN SEBASTIÁN, Spain – The temporal profile of an individual free-electron laser (FEL) pulse now can be measured with femtosecond precision using FLASH, a soft-x-ray FEL. The technique could be used to film atoms in motion or to study chemical reactions and phase...
Hot graphite shines new light on laser-driven fusion
COVENTRY and OXFORD, England – A new strongly heated graphite experiment has left an international team of researchers with some unexpected results that may reveal secrets of giant planets, white dwarfs and laser-driven fusion. In an attempt to learn more about how energy is...
Incoming asteroid! Set lasers on “vaporize”
Mar 1, 2013 — As this issue went to press, an asteroid roughly half as large as a football field – and with energy equal to that of a large hydrogen bomb – readied for a flyby of Earth. A proposed system could eliminate a threat of this size in the...
Metallic “sandwich” boosts solar cell efficiency
PRINCETON, N.J. – A new combination of metal and plastic increases the efficiency of organic solar cells by 175 percent, making them more competitive with conventional silicon photovoltaics. The nanomesh structure, developed at Princeton University, traps and absorbs...
Microactuator flexes under laser light
BERKELEY, Calif. – A microscale actuator that flexes like a tiny beckoning finger under a burst of laser light may point toward practical applications in artificial muscles, microfluidics and drug delivery. The Lawrence Berkeley National Laboratory (Berkeley Lab)...
Nanomechanical fiber goes beyond light transmission
SOUTHAMPTON, England – A new dual-core optical fiber that can perform the functions of signal switches, routers and buffers by applying a minute amount of mechanical pressure could significantly enhance data processing and perform sensing functions in electronic devices....
Photonic FEL helps fingerprint drugs
ENSCHEDE, Netherlands – Combining a free-electron laser and a photonic crystal makes it easier to identify a drug than using chemical analysis. A terahertz laser can show the molecular structure of drugs because the beam it produces is at a wavelength suitable for...
Photons can sense each other
COPENHAGEN, Denmark – Photons can “sense” each other and coordinate their separate paths through a complex material, new research from the Niels Bohr Institute shows. The scientists demonstrated that photons emitted from a light source embedded in a complex...
Sandia Houses World’s Largest Fiber Optic Network
ALBUQUERQUE, N.M., March 1, 2013 — The largest fiber optic local area network in the world, pioneered by Sandia National Laboratories, is expected to reduce energy costs by 65 percent once the network is fully operational.
Sprinkled silver nanocubes enhance light absorption
DURHAM, N.C. – Just as salt sprinkled over a piece of meat enhances its flavor, tiny silver cubes sprinkled at random on a polymer-coated gold surface enhance the material’s ability to “perfectly” absorb light of a given wavelength. A simple...
The rise of the boson-sampling computer
OXFORD, England, and ST. LUCIA, Australia – Despite the widespread research on quantum computing, nobody has built a machine that uses quantum mechanics to solve a computational problem faster than a classical silicon-based computer. Now scientists from universities in England and Australia...
Unique waveguide provides pinpoint control of light
PASADENA, Calif.– A tunnel-like device that channels light effectively into a point just a few nanometers across may lead to next-generation applications in computing, communications and imaging. Beams of light are fantastic carriers of data. They can carry more...
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