XAS Measurements (IMAGE) Chinese Academy of Sciences Headquarters Caption (A) O-K edge. (B) Cu-L3 edge showing the extremely overdoping state. Credit JIN Changqing 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.