You just got a brand new smartphone with a gorgeous screen, so you naturally also get some screen protectors for it. You don't want that backlit goodness to be scratched after all. If researchers at the University of Pittsburgh can get their "repair-and-go" system working though, those scratches may become a thing of the past.
Based on the operation of white blood cells, the researchers suggest using microcapsules filled with a solution of nanoparticles to fill and repair defects and scratches. This could be applied at the end of manufacture, before a product hits the shelf, or after consumer use. Either way, the lifetime of the product could be extended.