Defect SEM (IMAGE) University of California - Berkeley Caption Shown is an atomic resolution scanning transmission electron microscope image of a defect in lower-grade titanium. Blue arrowheads point to the ideal position of the displaced titanium atoms, and the black arrowheads point to the location of the oxygen impurities. Credit Image by Qian Yu Usage Restrictions All rights reserved. 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.