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Compound May Be 'Next Silicon': Scientists

By Kevin Spak,  Newser Staff

Posted Jun 16, 2009 11:32 AM CDT

(Newser) – Stanford physicists have discovered a chemical compound that could replace silicon and transform the computing industry, the San Jose Mercury News reports. Jet-black bismuth telluride has a unique ability, researchers discovered: Electrons can travel across it without resistance, losing no energy. So far the material can only carry small currents, but the findings suggest it could someday carry far more information than silicon.

Team members say they’re confident the material, grown in unique furnaces on campus, could lead to new “spintronic” devices—ones that harness the spinning of electrons to carry information. But one computer historian urged caution. “It’s exciting to think about potential applications for a new discovery,” he said, but “silicon has had its death knell sounded for the last two decades.”

A chip containing the entire Hebrew Bible is displayed at the Technion University in Haifa, Sunday, April 26, 2009.
A chip containing the entire Hebrew Bible is displayed at the Technion University in Haifa, Sunday, April 26, 2009.   (AP Photo/Dan Balilty)
A chemical compound called bismuth telluride allows electrons to travel without resistance, unlike silicon; this could allow for more information to be carried.
A chemical compound called bismuth telluride allows electrons to travel without resistance, unlike silicon; this could allow for more information to be carried.   (AP Photo)
A silicon chip factory is seen in this file photo.
A silicon chip factory is seen in this file photo.   (Photo: Business Wire)
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COMMENTS
Showing 3 of 3 comments
TiredMemeCat
Jun 17, 2009 12:01 PM CDT
"Tellurium is extremely rare, one of the nine rarest metallic elements on Earth." Ah. Nevermind, then.
JonmarkP
Jun 17, 2009 5:08 AM CDT
"Let the electron compute, let the photon transmit." When the chips' internal communication is optical rather than electronic, we'll see real speed. It's the difference between the 1956 telephone system transmitting over copper wire, and today's transmission over fiver optic cable. And it's a far more realistic possibility over the short term.
riffran
Jun 16, 2009 7:46 AM CDT
nice.

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