The 6 Grain Boundary Complexions (IMAGE) Lehigh University Caption Lehigh University researchers identified six distinct interphase structures -- complexions -- at the grain boundaries in pure and doped polycrystalline alumina. Funded research will create entirely new classes of materials that avoid these imperfections. Credit Lehigh 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.