Image for Self-Healing Materials

Listen now 29 mins

Listen in pop-out player

Self-Healing Materials

Duration:
29 minutes
First broadcast:
Monday 09 December 2013

Quentin Cooper takes a look at the new materials that can mend themselves. Researchers are currently developing bacteria in concrete which, once awakened, excrete lime to fill any cracks. In South America you can choose a car paint that heals its own scratches. And there are even gold atoms which can migrate to mend tiny breaks in jet turbine blades.

Engineers normally design things so the likelihood of breaking is minimised. But by embracing the inevitability of breakage, a new class of materials which can mend cracks and fissures before you can see them may extend the lives of our cars, engines, buildings and aeroplanes far beyond current capability.

(Image: Presenter, Quentin Cooper, BBC Copyright)

Free downloads

  1. Image for Discovery

    Discovery

    The science documentary series that looks in depth at the most significant ideas, discoveries and…

  2. Image for Science Hour

    Science Hour

    Science news and highlights of the week from BBC World Service. The Science Hour is a weekly…

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.