GRAIN 1 (IMAGE) Rice University Caption In a Rice University study, a polycrystalline material spinning in a magnetic field reconfigures as grain boundaries appear and disappear due to circulation at the interface of the voids. The various colors identify the crystal orientation. Credit Biswal Research Group/Rice University Usage Restrictions None 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.