Fig. 1 (IMAGE) Osaka University Caption Metal atoms in nanoparticles can appear on the surface when the nanoparticles are coated with a different metal. Credit Nobutomo Nakamura et al. Usage Restrictions Credit must be given to the creator. 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.