The competition between Blue-Ray and HD-DVD seems to be ridiculous and pointless when you compare it with the plans of Mempile company. After achieving the maximum of 2 or 4 layers on present-day discs, they’re coming with a 200-layer medium called TeraDisc™. It’s those 200 virtual layers in a DVD-size medium (1,2 mm thick) that allow such a huge amount of data to be stored 3-dimensionally on a single disc. The medium contains light sensitive molecules (chromophores) capable of switching between two states thus saving digital data.
