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2012-01-06 09:45:06

Silicon links shrink to atomic scale     The narrowest conducting wires in silicon ever produced are shown to have the same electrical current carrying capability as copper, as published in Science.     This means electrical interconnects in silicon can be shrunk to the atomic-scale without losing their functionality — Ohm's law holds true at the atomic-scale.     UNSW researchers will use these wires to address individual atoms —...

2012-01-05 13:46:25

Thanks to a collaboration between scientists in San Sebastian and Japan, a relay reaction of hydrogen atoms at a single-molecule level has been observed in real-space. This way of manipulating matter could open up new ways to exchange information between novel molecular devices in future electronics. Dr. Thomas Frederiksen, presently working in the Donostia International Physics Center (DIPC) is one of the scientists that has participated in this research project. The results have been...

2011-12-22 15:22:20

Physicists at Harvard University have realized a new way to cool synthetic materials by employing a quantum algorithm to remove excess energy. The research, published this week in the journal Nature, is the first application of such an "algorithmic cooling" technique to ultra-cold atomic gases, opening new possibilities from materials science to quantum computation. "Ultracold atoms are the coldest objects in the known universe," explains senior author Markus Greiner, associate professor...

INTEGRAL Deciphers Diffuse Signature Of Cosmic-ray Electrons
2011-12-22 04:22:00

Astronomers exploiting six years worth of data from ESA's INTEGRAL mission have pinned down the individual processes contributing to the high-energy Galactic interstellar emission produced by cosmic-ray electrons. Deciphering each of the different physical mechanisms at play at hard X-ray and soft gamma-ray wavelengths represents a crucial step towards an increasingly detailed picture of the population of high-energy particles permeating the Milky Way. Cosmic rays are highly-energetic...

2011-12-19 15:10:02

Pitt physicists able to obtain higher-precision measurements with “single-electrons in-diamond” approach Quantum computing–considered the powerhouse of computational tasks–may have applications in areas outside of pure electronics, according to a University of Pittsburgh researcher and his collaborators. Working at the interface of quantum measurement and nanotechnology, Gurudev Dutt, assistant professor in Pitt´s Department of Physics and Astronomy in the...

2011-12-13 22:00:44

Towards a better understanding of subatomic particles using a new cold-atom setup A team of scientists have made it easier to study atomic or subatomic-scale properties of the building blocks of matter (which also include protons, neutrons and electrons) known as fermions by slowing down the movement of a large quantity of gaseous atoms at ultra-low temperature. This is according to a study recently published in EPJ D´ as part of a cold quantum matter special issue, by researchers...

2011-12-12 22:30:51

Targeted proton transfer within a molecule For a long time miniaturization has been the magic word in electronics. Dr. Willi Auwaerter and Professor Johannes Barth, together with their team of physicists at the Technische Universitaet Muenchen (TUM), have now presented a novel molecular switch in the journal Nature Nanotechnology. Decisive for the functionality of the switch is the position of a single proton in a porphyrin ring with an inside diameter of less than half a nanometer. The...

2011-12-09 12:12:37

Physicists at the National Institute of Standards and Technology (NIST) have found a way to manipulate atoms' internal states with lasers that dramatically influences their interactions in specific ways. Such light-tweaked atoms can be used as proxies to study important phenomena that would be difficult or impossible to study in other contexts. Their most recent work, appearing in Science,* demonstrates a new class of interactions thought to be important to the physics of superconductors that...

2011-12-09 11:47:27

'Dressing' atoms with laser light allows high angular momentum scattering to be seen for the first time in long-lived atomic Bose-Einstein condensates at ultracold temperatures Scientists at the Joint Quantum Institute (JQI) have for the first time engineered and detected the presence of high angular momentum collisions between atoms at temperatures close to absolute zero. Previous experiments with ultracold atoms featured essentially head-on collisions. The JQI experiment, by contrast, is...

2011-12-08 10:29:51

A highly sensitive method to detect atoms was developed at the Vienna University of Technology Glass fiber cables are indispensable for the internet — now they can also be used as a quantum physics lab. The Vienna University of Technology is the only research facility in the world, where single atoms can be controllably coupled to the light in ultra-thin fiber glass. Specially prepared light waves interact with very small numbers of atoms, which makes it possible to build detectors...


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2013-02-17 09:41:03

Image Caption: This icon, known as the "feed icon" or the "RSS icon", was introduced in Mozilla Firefox in order to indicate a web feed was present on a particular web page that could be used in conjunction with the Live bookmarks function. Microsoft Internet Explorer, Opera and some other browsers have adopted the icon in order to promote a de facto standard. Credit: Mozilla/Wikipedia A web feed is a data format that provides the user with regularly updated content. It is also...

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