Posts Tagged ‘insulator’
Glass slivers conduct current at the nanoscale
U. MICHIGAN (US)—On a very small scale, physics can get a little peculiar. Biomedical engineers have discovered such a nanoscale phenomenon and think it could lead to faster, less expensive portable diagnostic devices. Continue…
Thursday, May 27, 2010 13:24 - 0 Comments
Science & Technology - Feb 10, 2010 11:22 - 1 Comment
Waves of electrons on the verge
PRINCETON (US)—For the first time, scientists have observed electrons in a semiconductor on the brink of transitioning from a metal to an insulator—a phenomenon shrouded in mystery despite decades of examination. (more…)
Science & Technology - Nov 9, 2009 15:02 - 0 Comments
Now it’s conductive; now it’s not
JOHNS HOPKINS (US)—A substance long known to conduct electricity is now being used in a different way to block it, opening up possible new applications in transistor technology and devices such as electronic books. (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)
