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MOVING ELECTRONS AT THE MOLECULAR AND NANOMETER SCALES
Posted on Monday, March 14, 2005 @ 22:36:06 UTC by vlad

Science March 14 - Possible applications for solar cells and other small-scale circuits

Learning how to control the movement of electrons on the molecular and nanometer scales could help scientists devise small-scale circuits for a wide variety of applications, including more efficient ways of storing and using solar energy. Marshall Newton, a theoretical chemist at the U.S. Department of Energy's Brookhaven National Laboratory, will present at talk at the 229th National Meeting of the American Chemical Society highlighting the theoretical techniques used to understand the factors affecting electron movement.


Full story at: http://www.physorg.com/news3369.html

 
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"MOVING ELECTRONS AT THE MOLECULAR AND NANOMETER SCALES" | Login/Create an Account | 1 comment | Search Discussion
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Counting electrons one by one, etc. (Score: 1)
by vlad on Wednesday, March 16, 2005 @ 20:30:12 UTC
(User Info | Send a Message) http://www.zpenergy.com
Counting electrons one by one Mar 16

Physicists in Sweden have counted individual electrons in an electrical current for the first time. Jonas Bylander, Tim Duty and Per Delsing at Chalmers University of Technology in Goteborg directly measured the oscillations associated with single electrons in a one-dimensional chain of superconducting "islands" connected by tunnel junctions. The technique could lead to the development of a new standard for electric current (J Bylander et al. 2005 Nature 434 361).

Full story at: http://physicsweb.org/articles/news/9/3/11


RESEARCHERS FIND EVIDENCE OF DARK ENERGY IN OUR GALACTIC NEIGHBORHOOD, March 16
Astrophysicists in recent years have found evidence for a force they call dark energy in observations from the farthest reaches of the universe, billions of light years away.
Now an international team of researchers has used data from powerful computer models, supported by observations from the Hubble Space Telescope, to find evidence of dark energy right in our own cosmic neighborhood.
Full story at http://www.physorg.com/news3404.html


ENVIRONMENTALLY SAFER CATALYST PROVES MORE ACTIVE IN HYDROGEN PRODUCTION, March 16
Ohio State University engineers have developed a chemical catalyst that increases hydrogen production without using a toxic metal common to other catalysts.
Though the new catalyst is still in the early stages of testing, it could represent an important step toward using the nation's coal supply to power alternative fuel vehicles and equipment.
The catalyst uses a combination of iron, aluminum and other metals to harvest hydrogen from carbon monoxide and water, explained Umit Ozkan, professor of chemical and biomolecular engineering at Ohio State. In tests, the catalyst performed up to 25 percent better than a commercially available alternative.
Full story at http://www.physorg.com/news3408.html


PURDUE FINDING COULD HELP DEVELOP CLEAN ENERGY TECHNOLOGY, March 16
Chemical engineers at Purdue University have made a discovery that may help to improve a promising low-polluting energy technology that combusts natural gas more cleanly than conventional methods.
The finding revolves around the fact that catalysts and other materials vital to industry have complex crystalline structures with numerous sides, or facets. Different facets sometimes provide higher performance than others, so industry tries to prepare catalytic materials that contain a large number of higher-performing facets.
Full story at http://www.physorg.com/news3411.html


YOUNG UNIVERSE LOOKS LIKE 'VEGETABLE SOUP', March 14
What did the universe look like when it was only 2 to 3 billion years old? Astronomers used to think it was a pretty simple place containing relatively small, young star-forming galaxies. Researchers now are realizing that the truth is not that simple. Even the early universe was a wildly complex place. Studying the universe at this early stage is important in understanding how the galaxies near us were assembled over time.
Jiasheng Huang (Harvard-Smithsonian Center for Astrophysics) said, "It looks like vegetable soup! We're detecting galaxies we never expected to find, having a wide range of properties we never expected to see."
Full story at http://www.physorg.com/news3386.html


WAS EINSTEIN RIGHT WHEN HE SAID HE WAS WRONG?, March 16
Why is the universe expanding at an accelerating rate, spreading its contents over ever greater dimensions of space? An original solution to this puzzle, certainly the most fascinating question in modern cosmology, was put forward by four theoretical physicists, Edward W. Kolb of the U.S. Department of Energy's Fermi National Accelerator Laboratory, Chicago (USA): Sabino Matarrese of the University of Padova; Alessio Notari from the University of Montreal (Canada); and Antonio Riotto of INFN (Istituto Nazionale di Fisica Nucleare) of Padova (Italy). Their study was submitted yesterday to the journal Physical Review Letters.
Full story at http://www.physorg.com/news3405.html




 

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