Crystalline Copper (IMAGE) International School of Advanced Studies (SISSA) Caption This is a sample of crystalline copper used as a 'sliding' substrate. Credit Credits Nano-Cnr, Modena 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.