"You can do a lot of things with this phase-change memory that you can't do with flash," IBM senior manager of nanoscale science Spike Narayan told AFP.

"You can replace disks, do instant-on computers, or carry your own fancy computer application in your hand. It would complement smaller technology if manufacturers wanted to conjure things up."

Technical details of the research were to be presented to engineers gathered at the 2006 International Electronic Devices Meeting in San Francisco.

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