researcher photo (IMAGE) Rice University Caption Jun-Jie Zhang is a Rice postdoctoral research associate and lead author on the study. Credit Photo courtesy of Yakobson Group/Rice University Usage Restrictions Must credit Yakobson Group/Rice University. 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.