Uncovering the crystal defects within aragonite CaCO

• Published in: Proceedings of the National Academy of Sciences - PNAS Vol. 119; no. 14; pp. 1 - 9
• Main Authors: San, Xingyuan, Gong, Mingyu, Wang, Jian, Ma, Xiuliang, dos Reis, Roberto, Smeets, Paul J. M., Dravid, Vinayak P., Hu, Xiaobing
• Format: Journal Article
• Language: English
• Published: National Academy of Sciences 05.04.2022

Knowledge of deformation mechanisms in aragonite, one of the three crystalline polymorphs of CaCO₃, is essential to understand the overall excellent mechanical performance of nacres. Dislocation slip and deformation twinning were claimed previously as plasticity carriers in aragonite, but crystallog...