silver on carbon (IMAGE) Vienna University of Technology Caption A tiny nanoparticle of silver (reflective atoms on top) on a carbon carrier. The boundary area (coloured markings) is where the activity is highest. Credit TU Wien Usage Restrictions none License Original 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.