Chemicals
Based Technologies - TiO2 Mimics The Colour
Introduction
A research team at the University
of Tokyo has developed a material that turns into the
exact colour of the light it is exposed to. The material
is made of titanium oxide and silver. Titanium oxide
is coated on the surfaces of glass, wallpaper and plastic
to form a 10 micron thick film, which they soaked in
silver ions. When the film is exposed to ultraviolet
radiation, the silver ions turn into particles in a
wide variety of shapes and sizes. The silver particles
absorb different colours of light depending on their
shape and size. When exposed to intense light for several
minutes, the film changes into the colour of that light,
taking on a blue appearance under blue light. The colour
disappears after an exposure of about three days to
the sunlight.
For More Information
(Source: Science & Technology in Japan).
Science & Technology Wing
Embassy of India
2-2-11, Kudan Minami, Chiyoda-ku
Tokyo 102-0074, Japan
Tel: +81-3-3262-2391 to 97,
Fax: +81-3-3234-4866
E-mail: tandonus@hotmail.com
