Feeds

IBM plots 'chip on a molecule'

Silicon on borrowed time?

Top three mobile application threats

A functioning processor on a single molcule has been created by IBM scientists, offering the possibility of super-fast processing by tiny devices.

The molecule in question is a carbon nanotube. The team at at IBM’s Thomas J. Watson Research Center, New York, created a type of logic device called a ring oscillator. It consisted of 12 bi-metal field effect transistors laid along the 18 micrometre length of the nanotube.

New Scientist reports developer Joerg Appenzeller explaining: "This isn’t about making the circuits smaller, it’s about making them faster. Nanotubes fit the characteristics we need to advance high-end processing."

Chip designers have long known that they are pushing the limits of conventional silicon technology. The effort to keep up with Moore's Law - which predicts that the number of transistors on a chip will double every 18 months - has meant more and more transistors have been packed onto silicon by improving manufacturing techniques. However this constricts the pathways electrons are able to take and increases resitance in the circuit, limiting its speed.

According to the research paper, published in the journal Science, the chief reason behind the problem is a phenomenon known as plasmonic resonance. An electron’s path is hindered when it becomes coupled with vibrations in the surrounding silicon lattice structure.

But because the carbon nanotube is a single molecule this problem is avoided and resistance much reduced. The upshot is the possibility of circuits running much faster. Technologists reckon it could one day pave the way for affordable near-terahertz processing.

This latest experiment was a proof of the principle that nanotubes can be used as a basis for electronics. The technology is a long way off doing useful computation - the nanochip achieved a 52MHz crawl.

Right now nanotube production is at best a hit and miss operation. The technology would have to be bettered controlled for the chip giants to invest in trying to put nanotech in their products. According to NS one of the team reckons it could be done in five years if a huge investment was made, but believes in reality it will take much longer.®

3 Big data security analytics techniques

More from The Register

next story
Red-faced LOHAN team 'fesses up in blown SPEARS fuse fiasco
Standing in the corner, big pointy 'D' hats
KILLER SPONGES menacing California coastline
Surfers are safe, crustaceans less so
Opportunity selfie: Martian winds have given the spunky ol' rover a spring cleaning
Power levels up 70 per cent as the rover keeps on truckin'
KILLER ROBOTS, DNA TAMPERING and PEEPING CYBORGS: the future looks bright!
Americans optimistic about technology despite being afraid of EVERYTHING
Discovery time for 200m WONDER MATERIALS shaved from 4 MILLENNIA... to 4 years
Alloy, Alloy: Boffins in speed-classification breakthrough
Elon Musk's LEAKY THRUSTER gas stalls Space Station supply run
Helium seeps from Falcon 9 first stage, delays new legs for NASA robonaut
Fancy joining Reg hack on quid-a-day challenge?
Recruiting now for charity starvation diet
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.