Nanotechnology, called "the newest science", is the study of miniaturization. 
•It is the engineering of functional systems at a sub-molecular scale.
•The nano-structure has special properties due to their miniscule components.
•These special properties improve performance by completely sealing the subject surface, down to the absolute tiniest pore and crevice.
Article: Nanotechnology in Finishing
By Jim Destefani Editor, pfonline.com