For years, researchers have developed thin films of bismuth telluride (Bi2Te3) – which converts heat into electricity or electricity to cooling – on top of gallium arsenide (GaAs) to create cooling devices for electronics. ...
Condensed Matter
Mar 11, 2013
8
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When placed next to a bar magnet, an aluminum ball draws gently towards the magnet. In contrast, a ball made of silver moves out of the magnetic field. The mechanisms underlying these different behaviors are known as paramagnetism ...
General Physics
Nov 22, 2012
7
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(Phys.org) -- Luke Hanley is a big believer in harnessing solar energy to produce electricity. Doing it more efficiently is his goal.
Nanomaterials
Jun 20, 2012
1
0
A team led by Johns Hopkins engineers has discovered some previously unknown properties of a common memory material, paving the way for development of new forms of memory drives, movie discs and computer systems that retain ...
Condensed Matter
May 3, 2012
0
0
Nearly 13.7 billion years ago, the universe was made of only hydrogen, helium and traces of lithium — byproducts of the Big Bang. Some 300 million years later, the very first stars emerged, creating additional chemical ...
Astronomy
Feb 17, 2012
116
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A map of radioactive contamination across Japan from the Fukushima power plant disaster confirms high levels in eastern and northeastern areas but finds much lower levels in the western part of the country, thanks to mountain ...
Earth Sciences
Nov 14, 2011
2
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The clean energy economy of the future hinges on a lot of things, chief among them the availability of the scores of rare earth elements and other elements used to make everything from photovoltaic panels and cellphone displays ...
Earth Sciences
Oct 10, 2011
1
0
Decades of optimization have made the electronic switch both tiny and efficient. Yet engineers continue to adapt it to meet the increasingly demanding requirements of new applications. One such emerging requirement is the ...
Condensed Matter
May 4, 2011
0
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Marisa Pedretti, a post-doctoral researcher since January 2009 in the Experimental Nuclear Physics group of the Physics Division of the Physical and Life Sciences Directorate, was recently selected as the experimental coordinator ...
General Physics
Jan 11, 2011
3
0
(PhysOrg.com) -- A Japanese scientist who "likes alcohol very much" has discovered that soaking samples of material in hot party drinks for 24 hours turns them into superconductors at ambient temperature.
