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electrons News
Earth’s UV Signature Revealed
BOULDER, Colo., Jan. 19, 2010 – On its way to rendezvous with a comet, the spacecraft Rosetta turned an eye toward Earth and recorded its ultraviolet signature. The information it collected may help astrobiologis...
QCLs: More Light, Less Heat
EVANSTON, Ill., Jan. 12, 2010 – Northwestern University researchers developed compact, mid-infrared laser diodes that generate more light than heat – a breakthrough in quantum cascade laser (QCL) efficiency and an important step toward use of QCLs in a variety of applications,...
Filming photons using electrons
PASADENA, Calif. – A new technique that tracks and images nanoscale matter in real time also enables researchers to image electrical fields produced by the interaction of electrons and photons. The method, which uses four-dimensional microscopy, was developed by...
4-D Microscopy Films Photons
PASADENA, Calif., Dec. 22, 2009 – A new 4-D microscopy technique was used to track and image nanoscale matter in real-time, allowing researchers at the California Institute of Technology (Caltech) to image electrical fields produced by the interaction of electrons and photons.
Vistec, MIET to Collaborate
Dec 14, 2009 — Vistec Electron Beam GmbH of Jena, Germany, has announced its entrance into a joint electron beam lithography project with Moscow Institute of Electronic Technology (MIET). The two will collaborate on a photomask manufacturing project that began...
Ultrasmall, ultrafast, ultraexciting
Dec 1, 2009 — As we send this issue to press, the very first experiments are lighting up at the Linac Coherent Light Source (LCLS), located at the SLAC National Accelerator Laboratory in Menlo Park, Calif., and operated by Stanford University for the US...
Tunable light source reaches nanoscale milestone
SOUTHAMPTON, UK – In the race to develop ever-smaller and -faster optical devices, researchers have built the first tunable nanoscale light source driven by free electrons. Dubbed the “light-well” by its creators, the novel emitter could one day be used as an on-chip...
Carbon Nanotube Solar Cells
ITHACA, N.Y., Sept. 14, 2009 – Using a rolled-up sheet of graphene instead of traditional silicon, Cornell University researchers created the basic elements of a solar cell that they hope will lead to much more efficient ways of converting light to electricity. But issues such as...
Storing Sunlight for Soldiers
WRIGHT-PATTERSON AIR FORCE BASE, Ohio, & ARLINGTON, Va., July 21, 2009 -- New technologies for capturing sunlight and storing it as energy in flexible and wearable solar cells are being pursued by the Air Force Research Laboratory to help soldiers on the ground and those operating unmanned aerial vehicles.
UK, China Fund Spintronics Study
Jul 2, 2009 — A team of researchers from the University of Surrey and two other institutions have been awarded a grant of around £430,000 (about $704,000) to develop prototype ultrasmall-scale silicon structures for "spintronic" semiconductors. Jointly awarded by...
Light Squeezed From QDs
MONTREAL, April 3, 2009 -- Light has successfully been amplified with semiconductor nanocrystals (quantum dots) suspended in another medium. The technology, once seen as a dead-end, could lead to advances in lasers, optical computing and telecommunications.
Signal Mixer Made from Laser
CHAMPAIGN, Ill., March 20, 2009 – Electrical engineers at the University of Illinois at Urbana-Champaign have made a microwave signal mixer from a tunnel-junction transistor laser, an innovation that should lead to higher-speed electronics and higher-performance integrated circuits.
Attosecond Researcher Wins Prize
Mar 19, 2009 — University of Ottawa attosecond laser researcher and physicist Dr. Paul Corkum has received the Gerhard Herzberg Canada Gold Medal for Science and Engineering, Canada’s most prestigious science prize, from the Natural Sciences and Engineering...
Nanocircuit Switch Found?
BERKELEY, Calif., March 4, 2009 – Simply pushing or pulling a molecular junction turns the electrical resistance flowing through the nanometer-scale circuit on or off, researchers have discovered. The feature could be exploited as a switch in future nanoscale electronics devices....
New Laser Type Discovered
PRINCETON, N.J., Dec. 22, 2008 -- The discovery that a quantum cascade laser can generate a second beam with very unusual properties could lead to lasers that operate more efficiently and at higher temperatures than existing devices, for applications including environmental...
Plasmas Made From Molecules
VANCOUVER, British Columbia, Nov. 24, 2008 -- A new technique for making ultracold plasmas out of molecules instead of trapped atoms brings scientists a big step closer to unlocking the secrets of the most abundant form of matter in the universe. A plasma, or ionized gas, can be as...
Shine On, New Bulb
Nov 1, 2008 — Based on a whole new technology, it starts with a standard glass bulb that is coated on the outside with a phosphor and then stimulated by accelerated electrons, making the surface glow. According to Vu1, it has several advantages over other...
Plasmons Power Patterning
BERKELEY, Calif., Oct. 23, 2008 -- A new lithography process that resembles a needle playing an album on a traditional LP turntable uses plasmonic lenses as "optical styluses" and could make microprocessors much smaller and more powerful and create disks that hold 10 to 100 times...
Helium Ion Microscope
GAITHERSBURG, Md., Sept. 5, 2008 – “It's the physics,” explained Andras Vladar, of the National Institute of Standards and Technology’s (NIST) Nanoscale-Metrology Group, when referring to the new helium ion microscope. NIST researchers announced that this new technology uses helium...
Tight Squeeze on Light
BERKELEY, Calif., July 31, 2008 – Researchers at the University of California, Berkeley, have found a way to squeeze light through an opening that is only five times the width of a single piece of DNA. According to lead researcher, Xiang Zhang, mechanical engineering professor at UC...
Beetle Scales Ideal Crystals
SALT LAKE CITY, May 20, 2008 -- The ideal photonic crystal, a diamond-like structure that manipulates visible light, has eluded creation in the lab, but now chemists have discovered that nature has already done the work by forming the iridescent green scales of a beetle from...
Watching What Happens During Attoseconds in Solids
Apr 1, 2008 — New insight into ever-smaller structures of matter and their ever-faster dynamics holds great promise for pushing the frontiers of many fields in science and technology. The speed of electronic processes is determined by the separation of the...
Appelbaum Wins NSF Career Award for Silicon Spintronics Research
Mar 4, 2008 — Ian Appelbaum, assistant professor of electrical and computer engineering at the University of Delaware, has received a Faculty Early Career Development Award from the National Science Foundation (NSF), the university announced yesterday. The...
Smile, You’re on Attosecond-Pulse Camera!
Mar 1, 2008 — If you want to know the properties of a substance, you have to know about its molecules. If you want to know about the properties of those molecules, you have to know something about the atoms that comprise them. It follows, then, that you must find...
Funds to Push Photon Chip
DALLAS, Texas, Jan. 18, 2008 -- The University of Texas Dallas (UT Dallas) has received a $1.75 million grant from DARPA to develop microchip technology that’s smaller, faster and more energy-efficient than anything on the market today. The secret ingredient is light. Like...
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