Mar. 12/07/2022 15:30 Andromede, Bâtiment 11, Etage 3
ARTZNER Franck (IPR, the Institute of Physics of Rennes)
Hierarchical crystallization of nanoparticles based on monodispersity or on polydispersity
Buiding up hierarchical organizations is still challenging because one have to design self-assembly mechanismes at various length scales and with similar time scales. Two nanoparticle systems are presented. The former system (Fig. 1) is a interplaying between drying processes at nanometric scale (colloidal crystallization) and millimetric scale (Maze Formation within micropatterned surfaces). The second system is the slow crystalisation of polydisperse Ludox®. In both cases, entropy plays an important role with (i) Onsager “Forces” that ease the nematic order between nanorods, and with (ii) mixing entropy in cluster phases.
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