Dr. André Linhares Rossi (Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brésil)

Abstract : In this seminar, I will present results from experimental studies on the crystallization process of calcium carbonates and phosphates, using high-spatial-resolution techniques such as transmission electron microscopy and synchrotron beamline techniques. Both materials are abundant on Earth in the form of minerals and biominerals (such as the skeletons of vertebrates and invertebrates). Furthermore, they have commercial and environmental significance. The crystallization process can follow non-classical pathways, in which amorphous or crystalline precursors may be present prior to the final phase. The effect of organic additives (polymers and phosphonates) on the crystallization process has also been studied.

Contact : Jacques Werckmann (jacques.werckmann@ipcms.unistra.fr)