Fig. 2 (IMAGE) Osaka University Caption When Au nanoparticles are coated with Pd, the Au atoms diffuse to the surface of the particles. 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.