General principles of the crystallization of nanostructured disperse systems

• Published in: Colloid journal of the Russian Academy of Sciences Vol. 71; no. 3; pp. 313 - 328
• Main Authors: Karpov, S. V., Isaev, I. L., Gavrilyuk, A. P., Gerasimov, V. S., Grachev, A. S.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-06-2009
• Subjects: Chemistry; Chemistry and Materials Science; Polymer Sciences; Surfaces and Interfaces; Thin Films; Adsorption Layer; Colloid Journal; Elastic Interaction; Colloidal Crystal; Viscous Drag
• ISSN: 1061-933X; 1608-3067
• DOI: 10.1134/S1061933X09030053

Regularities of the self-organization of ensembles of nanoparticles into crystalline structures in metal lyosols are studied by the Brownian dynamics. Van der Waals, elastic, and electrostatic interparticle interactions, as well as the action of dissipative and fluctuation forces are taken into account in the model. Pair interaction potentials for the polydisperse ensembles of particles are analyzed and the correlations between the pattern of potential curves and the type of formed structures (from crystalline to fractal) are revealed. The effect of interparticle tangential friction on the degree of ordering of formed structures is studied. It is demonstrated that this factor can determine the degree of ordering of nanoparticle aggregates. An essentially new approach to describing elastic interactions of nanoparticles of polymer-containing sols is implemented.