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Now, a memory device that may store data for 1 billion yrs
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[Image: Solid-State-Drive.jpg]
Washington, May 25 : Scientists have come up with a new computer memory device that can store thousands of times more data than conventional silicon chips and that too for more than one billion years.

Packing more digital images, music, and other data onto silicon chips in USB drives and smart phones is like squeezing more strawberries into the same size supermarket carton.

The denser you pack, the quicker it spoils. The 10 to 100 gigabits of data per square inch on today''s memory cards has an estimated life expectancy of only 10 to 30 years.

The electronics industry needs much greater data densities for tomorrow''s iPods, smart phones, and other devices.

Now, Alex Zettl and colleagues have described the development of an experimental memory device consisting of an iron nanoparticle (1/50,000 the width of a human hair) enclosed in a hollow carbon nanotube.

In the presence of electricity, the nanoparticle can be shuttled back and forth with great precision.

This creates a programmable memory system that, like a silicon chip, can record digital information and play it back using conventional computer hardware.

In lab and theoretical studies, the researchers showed that the device had a storage capacity as high as 1 terabyte per square inch (a trillion bits of information) and temperature-stability in excess of one billion years.

The study is scheduled for publication in the June 10 issue of ACS'' Nano Letters, a monthly journal. (ANI)
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