HOW do you clean up nanoparticles? Obviously, you sweep them up with a nanobrush.
Fabricated from millions of carbon nanotubes and resembling a tiny toothbrush, a nanobrush has been made that can clean very small surfaces and paint the inside of capillary tubes that are thinner than a human hair.
Their small size is not the only advantage carbon nanotubes have over traditional bristles, says brush designer Pulickel Ajayan at Rensselaer Polytechnic Institute in Troy, New York. Bristles are often made from animal hair, synthetic fibre and metal wire. But each has its limitations. Metals corrode and weaken, hair is…
