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May 21, 2009

Researchers fit 2000 DVDs of info on a single disc

dvd.jpgResearchers at the Swinburne University of Technology in Melbourne, Australia have found a way to store 2000 DVDs worth of information on a single DVD. The method to their madness is something. Regular DVDs consist of 3 spatial dimension, but the researchers were able to add a couple more: a spectral dimension and a polarization dimension.

The spectral, or color, dimension is created by inserting gold nanorods onto the DVDs surface. Nanoparticles react to light according to their shape, meaning the researchers were able to record information on different wavelengths of light--in the same location! And it gets even better.

Back to the gold nanorods. When the researchers focus light on the disc, their inherent electrical fields align with the nanorods. Those electrical fields, or the angle of polarization, can be changed and information can be recorded at different angles. Again, in the same physical location.

Obviously commercializing this technology will take some time. Researchers say 5 to 10 years and it may just take that long for a DVD writer to be created that can adapt to the two extra dimensions.

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Posted by Justin Davey at May 21, 2009 7:04 AM

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