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Computer hard drive capacity could be increased a hundredfold by using a common protein to fabricate nano-scale magnetic particles, claims UK company Nanomagnetics

It uses the protein apoferritin, the main molecule in which iron is stored in the body, to create a material consisting of magnetic particles each just a few nanometres in diameter.

Each particle can store a bit of information and together they can be packed onto a disk drive at much greater density than is possible using existing hard disk manufacturing methods.