Speedier computer circuits created

Published: Sept. 28, 2009 at 3:38 PM

SAN DIEGO, Sept. 28 (UPI) -- Physicists at the University of California-San Diego say they've created speedy integrated computer circuits capable of working in very cold environments.

The circuits, built with particles called "excitons", can operate at commercially cold temperatures, bringing the possibility of a new type of extremely fast computer based on excitons closer to reality, researchers said.

The accomplishment follows the team's demonstration last summer of an integrated circuit capable of working at 1.5 degrees Kelvin above absolute zero. That temperature, equivalent to minus 457 degrees Fahrenheit, is not only less than the average temperature of deep space, but achievable only in special research laboratories.

In the new study, the scientists created an integrated circuit that operates at 125 degrees Kelvin -- a temperature equivalent to minus 234 degrees Fahrenheit and one that can be easily attained commercially using liquid nitrogen.

"Our goal is to create efficient devices based on excitons that are operational at room temperature and can replace electronic devices where a high interconnection speed is important," said Professor Leonid Butov, who led the study. "We're still in an early stage of development. Our team has only recently demonstrated the proof of principle for a transistor based on excitons and research is in progress."

The study is detailed in the early online edition of the journal Nature Photonics.

© 2009 United Press International, Inc. All Rights Reserved.
Order reprints




Additional News Stories
Woods named PGA Tour player of the year (9 min)
College bowl season opens Saturday (20 min)
Doc Holliday named Marshall football coach (47 min)
Octopus tool-using behavior seen
Fake rifle brings all-out police response
Poll: Christmas loneliest time for singles
Hitchhiking frogs possible disease threat
fark
Unknown number of hogs become instabacon in farm fire. Accidental BBQ trifecta complete
Cat chewing is draining Yemen's water supply
ACLU cancels Christmas, kids devastated
Today's "Mugshot Roundup"? Watta buncha maroons
Man uses cows to defraud banks. Cops heard about it, had a beef with him and branded him a criminal....
Lingerie Football League gets it's panties in a bunch, files briefs threatening to bustier players...