On titanium oxide can make cheap laser disks up to 25 TB

A group of chemists from Tokyo University conducted an experiment on the use of a new crystalline form of Ti ₃ O ₅ for the production of optical drives. Under the influence of a laser, this material changes shape from ferrous to brown semiconductor at room temperature.

Scientists have successfully created the surface of pits with a particle diameter of from 5 to 20 nm. This means that theoretically it is possible to make discs with a capacity of a thousand times higher than Blu-ray. According to the professor of chemistry at Tokyo University Shin-ichi Okosi (Shin-ichi Ohkoshi), the current market price of titanium oxide is about a hundred times lower than the GST alloy (germanium-antimony-tellurium), which is used to produce rewritable DVD and Blu-ray. Thus, the cost of new disks may be even lower than the existing ones.

The results of the work of scientists published on May 23 in the journal Nature Chemistry.