New Chinese technologies

The Chinese have unveiled a technology for high-density optical data storage on a diamond disk. It is the size of a regular DVD and can hold 10,000 times more data than a standard DVD disk. Chinese researchers estimate that the diamond medium created using their technology will be able to retain information for millions of years. Ultra-fast lasers with pulses lasting about 200 fs are used to write and read data, encoding information into the atomic structure of the diamond. These laser pulses knock carbon atoms out of the crystal lattice, creating vacancies - voids in the material's structure that determine the brightness of the response and contain the recorded information that can be retrieved.