Self-Healing Poly(Urea-Urethane) Elastomer (IMAGE) Royal Society of Chemistry Caption A cylindrical sample of the elastomer mends itself after being cut in two by a razor blade and can be manually stretched without rupture. Credit IK4 CIDETEC, San Sebastian, Spain Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.