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European researchers squeeze 500GB on a DVD

Posted on Tuesday, July 10 2007 @ 06:12:00 CEST by


Scientists from the University of Berlin, Budapest University of Technology and Politecnica delle Marche in Italy, have managed to develop a way to store 500GB or even 1TB of data on a regular HD DVD or Blu-ray disc.
The Microholas project developed a microholographic recording technique, using nanostructures inside the disk rather than on the surface as in conventional optical storage systems.

This allowed for an increase of the storage capacity far beyond the limits of today's red-laser DVDs and next-generation blue-laser discs.

A single-layer Blu-ray Disc can hold 25GB. A dual-layer disc holds double this amount. Single- and dual-layer HD DVDs hold 15GB and 30GB of data, respectively.

By applying wavelength multiplexing techniques to multi-layer disc structures, very high storage densities can be achieved, Professor Susanna Orlic told German site Pressetext. The 500GB prototype has 50 data-storage layers.
Source: The Register.


 



 

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