Abstract
Fernando Ramiro Manzano: „Faceting and conmensurability in colloidal crystal thin films”
Centro de Tecnologías Físicas, Unidad Asociada ICMM-CSIC/UPV, Universidad Politécnica de Valencia, Los Naranjos SN, 46022 Valencia, Spain, and Instituto de Ciencia de Materiales de Madrid CSIC, 28049 Madrid, Spain.
Colloidal particle self-organization has raised great interest in science. First, it provides direct information on natural ordering processes of mineral and biological systems. Second, it allows the fabrication of crystals composed of different geometries for new research areas, such as photonic crystals.
In the vast majority of colloidal crystallization processes, the interfaces (constituted by the frontier among gas, liquid or solid phases) act as confinement surfaces. Their degree of influence varies from one procedure to another and their effect creates a great variety of orderings.
This talk will deal with colloidal crystal thin films growth confined between flat and corrugated surfaces in a wedge cell for high-screened particles. We will see the influence of the confinement distance on the growth of several crystal orderings and the crystallization sequence involved.
