Iron Oxidation Defect Illustration (IMAGE) DOE/Argonne National Laboratory Caption Argonne researchers used coherent X-ray diffraction imaging to look at the strain inside an iron nanoparticle as it oxidized. This image shows the nanoparticle gradually oxidizing. Credit Argonne National Laboratory 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.