At the University of Illinois, researchers have developed capsules filled with carbon nanotubes, which is the latest in self-repairing material. These nanotubes will be able to fill in gaps in circuitry that were caused by some catastrophic event. Like, ummm, dropping your cellphone. Seriously though, this has some really good applications that can range from submarines to maintenance of circuitry in space.
"To make their self-healing material, Braun and Moore encapsulated carbon nanotubes inside polymer spheres about 200 micrometers in diameter each. They selected carbon nanotubes because of their high electrical conductivity and because their elongated shape does a good job of lining up to bridge gaps."