|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Characterization of Materials through High Resolution Coherent Imaging
||Biomimetic CaCO3 Complex Morphologies Studied by Coherent X-ray Diffraction Imaging
||Yuriy Chushkin, Thomas Beuvier, Federico Zontone, Oxana Cherkas, Alain Gibaud
|On-Site Speaker (Planned)
We present a study of the growth mechanism and self organization processes observed during the formation of biomimetic CaCO3 micro-particles from a liquid solution by using coherent X-ray diffraction imaging (CXDI).
Calcium carbonate (CaCO3) can be found in rock minerals and is widely used in industry. Also it is the main constituent of shells of marine organisms. Marine organisms form complex morphologies using CaCO3 and organic macromolecules. Yet little is know how these macromolecules direct precipitation and recrystallization of CaCO3. By analyzing the 3D structures of around 20 samples we could shed light on the pathway leading to the formation of complex morphologies down to the nanometer length scale. In particular, we discuss the role of macromolecules and concentration in the formation of micro-spheres and crystal growth and the connection between micro-particle shape and self-organization of the nano-crystals.
||Planned: Supplemental Proceedings volume