USNRL Hyperthermal Ion Implantation (IMAGE) Naval Research Laboratory Caption Image: Schematic displaying the HyTII process depicting nitrogen (N+) incident with a graphene-on-copper (Cu) sample. The three-graphene flake schematics depict the type of modification resulting from N-HyTII processing over the labeled energy range. Credit (US Naval Research 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.