small plans: nanotechnology for the building industry

Monday, November 07, 2005

World’s smallest toothbrush scrubs capillaries clean

Nano-sized toothbrushes that can clean very small surfaces have been developed by researchers. Fabricated out of millions of carbon nanotubes, the minuscule brushes could even paint the inside of capillaries thinner than a human hair. Carbon nanotubes are 30 times stronger than steel, yet five times less dense. They are highly elastic, resistant to heat, have large surface areas and even conduct electricity. more @ newscientist.com