Mempile has developed a removable optical storage technology allowing for the storage of 1 Terabyte (1,000 Gigabytes) of information on a single inexpensive TeraDisc™.  

Using two-photon optics  , together with a unique photochemical polymer, Mempile’s revolutionary TeraDisc can record and read over 200 virtual layers of information, providing true three-dimensional storage of 1 Terabyte (TB).

The TeraDisc builds on the existing know-how attained through the development of CDs and DVDs, extending it so as to write layers upon layers of stacked information. This quantum leap in storage capacity (viz., equivalent to 200 DVDs on a single disc) offers a unique and exceptional solution for the consumer and enterprise archiving markets. To the user, the disc looks and behaves very much like familiar removable optical media, the difference being that it is completely translucent. 

TeraDiscs contain light-sensitive molecules ( chromophores  ) capable of switching between two distinct states upon the application of light. Due to the nonlinear nature of this light-matter interaction, only those molecules where the light is focused can interact and switch state. This selectivity allows the three-dimensional addressing of small volumes within the material, giving rise to the huge data capacity of this medium. Reading  is performed in a similar way, but with light causing the chromophores to fluoresce (i.e emit green light) rather than to “switch”. The amount of fluorescence depends on whether the point at the focus contains "written" or "unwritten" chromophore molecules.

The combination of cutting edge innovations in recording media, two-photon technology, and tracking algorithms, puts Mempile’s volumetric technology light years ahead in the search for the next optical storage solution.