Image (IMAGE) Science China Press Caption (A) AC HAADF-STEM image of Sn1/CuO, (B) AC HAADF-STEM and (C) HAADF-STEM images as well as the corresponding EDS mappings of 0.1Zn1-Sn1/CuO. The bright dots marked with the red circles in images A and B indicate the single atom. Credit ©Science China Press Usage Restrictions Use with credit. 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.