Chromium Oxide (IMAGE) Arizona State University Caption Chromium oxide clusters, composed of chromium and oxygen atoms, are prized for their unique electrical properties, which allow their conductance to be fine-tuned. The addition of oxygen atoms to chromium clusters increases their metallic properties. Credit Scott Sayres 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.