Gold Particles Over Metal Oxide Surfaces (image) Academy of Finland Caption This is a visualization of an atomic structure of the studied system where a negatively charged (charge -1) gold adatom is adsorbed on molybdemun-doped calcium oxide. The molebdenum dopant has an oxidation state of +3. The adsorption energy consists of ionocovalent, redox and Coulombic contributions. Yellow: gold; green: molybdenum; blue: calcium; red: oxygen. Credit Karoliina Honkala Usage Restrictions None 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.