Edge-Halogenated Graphene (image) Ulsan National Institute of Science and Technology(UNIST) Share Print E-Mail Caption A schematic representation for the edge expansions of XGnPs is seen in the top images. The bottom images contain ball-mill capsule containing the pristine graphite and stainless steel balls. Credit UNIST Usage Restrictions No Commercial Use. Share Print E-Mail 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.