The Microstructure of the Ru-NP Catalyst (IMAGE) Tokyo Institute of Technology Caption Analysis using high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) revealed: (a) small and flat ruthenium patches over a large domain and (b) the lattice spacing corresponding to that of face-centered-cubic ruthenium nanoparticles. Credit Chemical Science Usage Restrictions None License Licensed 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.