According to Shin-ichi Ohkoshi, chemistry professor at the University of Tokyo, the material transforms from a black-color metal state that conducts electricity into a brown semiconductor when hit by light.More info at RedOrbit.
The material can switch back and forth between the metal and semiconductor states at room temperature when exposed to light, creating an effective on-off function for data storage. The material is made from a new crystal form of titanium oxide.
Titanium oxide crystals can significantly increase disc storage capacity
Posted on Saturday, May 29 2010 @ 17:11 CEST by Thomas De Maesschalck
Japanese researchers have discovered that a new crystal form of titanium oxide could be used to make cheap discs with data storage capacity thousands of times greater than a DVD.