Jung-Fu Lin with atomic model (IMAGE) University of Texas at Austin Caption Co-lead author Jung-Fu "Afu" Lin holding a model of iron atoms arranged in the hexagonal structure thought to occur in the Earth's inner core. Credit Jung-Fu Lin / UT Jackson School of Geosciences. Usage Restrictions Include photo credit License Original 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.