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atom News
TEAM Yields Stunning Images
BERKELEY, Calif., Sept. 11, 2008 -- The world's most powerful transmission electron microscope has been used to produce stunning images of individual carbon atoms in graphene, the two-dimensional crystalline form of carbon that is highly prized by the electronics industry. Using TEAM 0.5 (transmission electron aberration-corrected microscope), researchers with Lawrence Berkeley National Laboratory (Berkeley Lab) recorded the images for the first time at Berkeley Lab's National Center for Electron Microscopy (NCEM). TEAM 0.5,...
Probe IDs Atomic Fingerprint
CAMBRIDGE, Mass., Sept. 4, 2008 -- A new way of measuring a quantum system's energy level could help overcome a key barrier to the advent of superfast quantum computers, seen as potentially powerful tools for applications such as code breaking. Researchers at the Massachusetts...
Hybrid Atom Identified
WEST LAFAYETTE, Ind., June 27, 2008 -- Experiments with nanoscale transistors by an international team have led to the identification of a hybrid atom that is half natural, half man-made and could be used to develop quantum computers. "Up to now large-scale quantum computing has been...
Transistor is 1 Atom Thick
MANCHESTER, England, April 21, 2008 -- Graphene, a single-atom-thick sheet of graphite that combines aspects of semiconductors and metals, has been carved into tiny electronic circuits containing individual transistors not much bigger than a molecule. Kostya Novoselov, PhD, and professor...
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...
Electron Motion Filmed
LUND, Sweden, Feb. 28, 2008 -- An electron's rapid motion has been filmed for the first time, with attosecond laser pulses showing how an electron rides a light wave after being separated from an atom. Until now it has been impossible to photograph electrons, since their...
Fano Effect Seen Using Quantum Dot
MUNICH, Germany, Jan. 17, 2008 -- An international team of researchers has revealed a previously unseen phenomenon known as the Fano effect by using an artificial nanostructure -- a quantum dot (QD) -- instead of an atom. The work could allow the exploration of new frontiers in...
Buckyball Formation Observed
ALBUQUERQUE, N.M., Nov. 28, 2007 -- A Sandia National Laboratories researcher looking for flaws in nanotube durability was unexpectedly able to experimentally confirm a hypothesis about how Buckyballs form. “We have now the first direct, in situ, experimental proof of the...
A Tiny Sensor for Tiny Hearts
BOULDER, Colo., Nov. 2, 2007 -- A sensor the size of a grain of rice could reduce the cost of noninvasive biomagnetic measurements such as fetal heart monitoring and may also have applications such as homeland security screening for explosives. The prototype device developed...
Photon-Powered PCs Proposed
COPENHAGEN, Denmark, Aug. 27, 2007 -- A new theory uses nonlinear optics to create the photon transistors necessary to drive future quantum computers. Incredibly fast supercomputers that can solve extremely complicated tasks have long been a dream for researchers, but there are some...
Molecular Heat Flow Measured
CHAMPAIGN, Ill., Aug. 10, 2007 -- A thermal measurement technique has been developed that can explore heat transport in extended molecules fastened at one end to a metal surface by using ultrafast lasers. Heat flow is crucial in the field of molecular electronics, where long-chain...
Light Bursts Produce Firsts
UPTON, N.Y., July 25, 2007 -- Generating ultrashort bursts of the strongest terahertz light to date has allowed the first observations of an optical phenomenon that could prove useful in a number of new light source technologies. The researchers said the work, which was done...
Surprising Superconductor Behavior Mapped at Nanoscale
PRINCETON, N.J., June 1, 2007 -- A customized microscope has allowed the observation that patches of superconductivity can exist in ceramic superconductors at higher temperatures than previously thought, a discovery that may help improve scientific understanding of resistance-free...
Grant Funds Use of Biology to Advance Quantum Electronics
WASHINGTON, March 20, 2007 -- The US Department of Defense has awarded a team of nine professors from six universities $6 million over five years to exploit precise biological assembly for the study of quantum physics in nanoparticle arrays. The research will help to produce a...
Single-Photon Server Created From an Atom
GARCHING, Germany, March 19, 2007 -- Physicists have succeeded in turning a rubidium atom into a single-photon server, which could allow scientists to generate high-quality photons with consistent energy levels for use in quantum computing. Finding photons is easy: Every time you...
Microprocessing Technique Yields Ultrathin Membranes
STUTTGART, Germany, and MANCHESTER, England, March 5, 2007 -- Using a fabrication method for producing microprocessors, scientists have created what they said is the thinnest material that will ever exist: Carbon membranes that are only one atom thick. The membrane may allow them to examine individual...
Researchers Edge Closer to Building Tabletop X-Ray Laser
BOULDER, Colo., Feb. 26, 2007 -- A team of researchers has developed a new technique to generate laser-like x-ray beams, removing a major obstacle in the decades-long quest to build a tabletop x-ray laser that could be used for biological and medical imaging. For nearly half a...
Quantum Hall Effect Observed at Room Temperature
TALLAHASSEE, Fla., & NIJMEGEN, Netherlands, Feb. 20, 2007 -- The world's most powerful magnets have given an international research team a first-time look at the quantum Hall effect at room temperature. A better understanding of the quantum world can help scientists develop better ultrasmall electrical...
Ultrathin Silicon Filter Sorts Single Molecules
ROCHESTER, N.Y., Feb. 15, 2007 -- A recently developed porous silicon membrane that is thousands of times thinner than similar filters used today sorts objects as small as proteins and has potential applications ranging from fuel cells to stem cells to microchip...
Answer Found for Nanowire Conductance Variations
ATLANTA, Feb. 9, 2007 -- A physics group has discovered how and why the electrical conductance of metal nanowires changes as their length varies. Determining the structural properties of nanowires is a big challenge facing the future construction of nanodevices and...
Light Changed to Matter, Then Stopped and Moved
CAMBRIDGE, Mass., Feb. 8, 2007 -- By converting light into matter and then back again, physicists have for the first time stopped a light pulse and then restarted it a small distance away. This "quantum mechanical magic trick" provides unprecedented control over light and could have...
'Maxwell's Demon' Becomes a Reality
EDINBURGH, Scotland, Feb. 6, 2007 -- An idea conceived by an eminent scientist nearly 150 years ago has finally been realized with a tiny machine that could eventually lead to lasers moving objects remotely. James Clerk Maxwell, who is ranked along Isaac Newton and Albert Einstein...
Artificial Atoms Make Microwave Photons Countable
NEW HAVEN, Conn., Feb. 2, 2007 -- Using artificial atoms on a chip, physicists have taken the next step toward quantum computing by demonstrating that the particle nature of microwave photons can now be detected. Quantum theories are often considered to apply best to processes...
Team Detects Top Quark
RIVERSIDE, Calif., Dec. 15, 2006 -- A group of 50 international physicists has detected the subatomic particle the top quark, for the first time produced without the simultaneous production of its antimatter partner -- an extremely rare event. The discovery of the single top quark...
Transport Measured Through a Single Atom in a Transistor
DELFT, Netherlands, Nov. 27, 2006 -- Transport has been successfully measured through a single atom in a transistor, giving researchers new insights into the behavior of so-called dopant atoms in silicon, one of the stumbling blocks impeding the further miniaturization of electronics....
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May 2024
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