A team of scientists from the Institute of Industrial Science at the University of Tokyo and Japan’s Synchrotron Radiation Research Institute have developed a type of ultra-hard glass which is made using alumina, an oxide of aluminium.
This new material could considerably improve the strength & durability of glass used in the windows of buildings, cars and in smartphone displays. Tests have shown this glass to be firmer than some metals and comparable with the highest values previously reported for oxide glasses.
source: http://bbc.in/1NLtmMw