Impact 2 (IMAGE) Rice University Caption Materials made at Rice University based on theoretical tubulane structures were better able to handle the impact of a bullet than the polymer reference cube at bottom. The bullet stopped in approximately the second layer of the tubulane structures, with no significant structural damage observed beyond that layer. Bullets fired at the same speed sent cracks through the entire reference cube. Credit Jeff Fitlow/Rice University 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.