Posts Tagged ‘atoms’
Apply heat. Watch materials shrink
CALTECH (US) — Most materials expand when heated, but a few actually contract. Now engineers have figured out how one of these curious materials does the trick. Continue…
Thursday, November 10, 2011 10:54 - 0 Comments
Science & Technology - Jul 14, 2011 16:44 - 0 Comments
Tiniest gold has strength of Goliath
U. BUFFALO (US) — At an atomic scale, the narrowest bridge of gold, made of a single atom, is paradoxically the strongest, according to new research. (more…)
Science & Technology - Jul 5, 2011 9:55 - 2 Comments
Tug-of-war gives electrons new spin
U. BUFFALO (US) — At very small scales, it may be possible to create quantum dots that are magnetic, even if their electrons have opposing spins. (more…)
Science & Technology - Jun 9, 2010 14:51 - 1 Comment
Dawdling electrons move at their own pace
CORNELL (US)—Scientists for the first time have produced images of “heavy fermions”—electrons that move through a conductor as if their mass were up to 1,000 times what it should be. (more…)
Science & Technology - Jun 7, 2010 9:00 - 0 Comments
Bendy copper nanowire akin to ‘foldable iPad’
DUKE (US)—Chemists have perfected a simple way to make inexpensive copper nanowires in quantity that are so small they are transparent, making them ideal for thin-film solar cells, flat-screen TVs, computers, and flexible displays. (more…)
Science & Technology - Aug 21, 2009 11:19 - 0 Comments
‘Supercool’ atoms try to act like electrons
These three false-color images, from left, depict the density of cesium atoms in a superfluid (conducting) state, in a transition state and finally in an insulating state. The original sample consisted of a single-layer of cesium atoms that formed a sheet measuring 80 microns in diameter, barely visible to the naked eye. Green indicates the lowest density of atoms. Red indicates a high, constant density. Physicists call this a plateau, which a team of scientists have observed for the first time. (Courtesy: Nathan Gemelke and Cheng Chin/University of Chicago)
Science & Technology - Mar 11, 2009 13:12 - 0 Comments
Quantum ‘dance’ could revolutionize computing
PRINCETON (US)—For years scientists have suspected that atoms placed in certain configurations would trigger electrons to perform a quantum dance of sorts. Now an international team of scientists has observed swarms of electrons spinning in a synchronized quantum dance within a new material. They are hopeful the discovery could be harnessed to transform computing and electronics. (more…)
