Researchers at the University of Melbourne in Australia have invented a new and rapid method to coat microscopic objects with self-assembling thin films and capsules made from naturally occurring materials. The films and capsules are made of iron and tannic acid and can be deposited on any type of substrate, such as glass, polystyrene, colloidal particles and even bacterial cells. The technique could find applications in medicine and environmental science……

http://nanotechweb.org/cws/article/tech/54050