Nanotube chip could store data for a billion years

08.06.2009
Researchers using carbon nanotubes that can theoretically store a trillion bits of data per square inch for a billion years.

The technology could easily be incorporated into today's silicon processing systems and it could be available in the next two years, a lead researcher said.

The scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory and the University of California said the new technology can potentially pack thousands of times more data into one square inch of space than today's chips.

"We've developed a new mechanism for digital memory storage that consists of a crystalline iron nanoparticle shuttle enclosed within the hollow of a multiwalled carbon nanotube," said physicist Alex Zettl, who led this research.

Zettl, who was lead author of the paper published online by Nano Letters entitled " ," is perhaps best known for his work on creating , which is one ten-thousandth the width of a human hair.

Zettl said uses an iron nanoparticle, approximately 1/50,000th the width of a human hair, that in the presence of a low voltage electrical current can be shuttled back and forth inside a hollow carbon nanotube with remarkable precision.