Cold logic promises speedy devices

March 12/19, 2003

Researchers from the University of Cambridge and Hitachi Cambridge Laboratory have made a superconducting logic circuit that computes very quickly and requires little power.

Superconducting materials allow currents of electrons to pass through without resistance; this allows transistors made of the material to work very fast. The downside is today's superconductors work only at extremely low temperatures.

The researchers' used transistors made from the superconductor niobium to construct a NOT gate, a logic circuit that reverses a bit of digital information, turning a 0 into a 1 and vice versa. The researchers fabricated the transistors using ion beams to etch a thin film of niobium, a process compatible with those used to manufacture today's transistors.

The superconducting circuits could eventually be used in highly-sensitive magnetic field sensors and as logic circuits for quantum computers. Practical superconducting transistor devices are possible within two to five years, according to the researchers.

The work appeared in the January 16, 2003 issue of the journal Nanotechnology. -TECHNOLOGY RESEARCH NEWS }


Page One

Quantum chips advance

Cheap solar power on deck

Paper speeds video access

Chip device gets to the point

News briefs:
   Warping yields better light chip
   Supersensitive disk drives on tap
   Lasers tweeze every which way
   RNA forms nanomotor
   Cold logic promises speedy devices
   Net has few degrees of separation

Research Watch blog

View from the High Ground Q&A
How It Works

RSS Feeds:
News  | Blog

Ad links:
Buy an ad link


Advertisements:



Ad links: Clear History

Buy an ad link

 
Home     Archive     Resources    Feeds     Glossary
TRN Finder     Research Dir.    Events Dir.      Researchers     Bookshelf
   Contribute      Under Development     T-shirts etc.     Classifieds


© Copyright Technology Research News, LLC 2000-2010. All rights reserved.