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AIST, Samsung Develop Optical Disc That Holds 200GB

Nikkei Reports — “Samsung Electronics of Korea and Japan’s National Institute of Advanced Industrial Science and Technology (AIST) have developed a new optical disc technology capable of storing 200 Gb of data on a disc, compared with 23 Gb for the emerging Blu-Ray Disc system.

The technology uses a violet laser diode to write data onto a spinning disc made from a special resin film on a glass substrate. The resin expands when heated by the laser, creating a 50 nm bump that functions as the data bit.

Samsung is one of a number of companies in the Blu-Ray Disc consortium, while Toshiba and NEC are developing a rival standard, Advanced Optical Disc (AOD). ”

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