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February 14th, 2008
he magnetic spots in disk storage are already smaller than semiconductor feature sizes, and patterned media and heat-assisted recording will allow 10 TB 2.5″ disks in a few years. But then what? Optical protein-based recording could be the answer.
Scientists at a Osaka University lab have demonstrated a photochemical technique for assembling a specific protein on a patterned surface for a rapid method of of recording, reading and erasing of information.
The patterned surface can be manufactured using quantum dot 605-streptavidin conjugates. Under a medium wave UVB laser, the conjugate fluoresces, distinguishing a 1 from a zero.
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