CL Result/Mg Atom Map (IMAGE) National Institute for Materials Science, Japan Caption Results of cathodoluminescence analysis applied to Mg ion-implanted GaN (left) and three-dimensional distribution of Mg atoms introduced into GaN as visualized by atom probe tomography (right). Credit NIMS 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.