Figure 2 (IMAGE) Institute for Basic Science Caption Formation mechanism of large area single crystalline Cu foils with different surface structures via the annealing of peroxide Cu foils. Credit IBS Usage Restrictions Please indicate the 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.