Annuaire
Pr. Jonathan OWEN
Colombia University, New York, USA
| Quand ? |
03/10/2019 à 10:30 |
|---|---|
| Où ? |
Salle André Collet |
| Contact |
B. Abécassis |
Study of colloidal nanocrystals formation
Modern colloidal nanocrystals can be synthesized with extraordinary precision despite a limited understanding of the mechanisms that provide this control. My talk will address the underpinning pathways that govern these essential aspects of nanocrystal structure. Using in situ absorption and x-ray scattering methods, we have measured the kinetics of nucleation in the synthesis of colloidal lead chalcogenide and indium phosphide nanocrystals. These studies have shown that small crystals are inherently more reactive toward growth than larger ones. I will discuss the implications of this finding and how this is relevant to the synthesis of several modern colloidal nanomaterials.