Fig.1 (IMAGE) Osaka University Caption (a) Photograph of the extremely smooth Cu foil and its surface image. (b) Photograph of the Cu foil/PTFE assembly during the 90° peel test. Credit M. Nishino et al. Usage Restrictions None 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.