Building a Metal Nanoparticle (IMAGE) University of Pittsburgh Caption This is a structure of a ligand-protected Au25 nanocluster. Credit Computer-Aided Nano and Energy Lab (C.A.N.E.LA.) 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.