Writing with light on titania: Rewritable UV-sensitive surfaces made from doped TiO2 nanocrystals

Researchers have succeeded in producing a coating material that can be written on using UV light and the writing erased again using oxygen. Changes to rewritable paper could help reduce paper waste in a wide variety of applications. The material is made from three non-toxic components and is produced in a single synthesis step, as described in the journal Angewandte Chemie.