(IMAGE) Karlsruher Institut für Technologie (KIT) Caption The material consists of precisely calculated needle-shaped elements, such that strength depends on the location in a defined way. Credit Photo: T. Bückmann / KIT 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.