Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2009

Идентификатор DOI: 10.1134/S1061933X09030089

Ключевые слова: Adsorption layer, Brownian Dynamics, Crystalline structure, Different sizes, Dissipative forces, Electrostatic interactions, Gold organosol, Nanostructured metals, Pair potential, Polydisperse, Potential curves, Selective coagulation, Self-organization, Van der waals, Adsorption, Brownian movement, Coagulation, Crystallization, Electron tunneling, Electrostatics, Polydispersity, Sols, Tunneling (excavation), Van der Waals forces, Structural metals

Аннотация: Regularities of the self-organization of bimodal ensembles of nanoparticles into crystalline structures in metal lyosols are studied by the Brownian dynamics method. Differences in the thicknesses of adsorption layers, van der Waals, elastic, and electrostatic interactions, and random and dissipative forces, as well as variations in interparticle electrostatic interactions due to electron tunneling are taken into account in the model. Pair potentials for polydisperse ensembles of particles are analyzed and the correlation between the pattern of potential curves and the type of forming structures is revealed. The possibility of the selective coagulation of particles with different sizes by virtue of dissimilar charging at the moment of their approach is demonstrated. The kinetics of this process is investigated. Specific features of the crystallization of bimodal sols are discussed using real gold organosols as examples.

Журнал: COLLOID JOURNAL

Выпуск журнала: Vol. 71, Is. 3

Номера страниц: 345-352

ISSN журнала: 1061933X

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

• Karpov S.V. (Siberian Federal University)
• Isaev I.L. (Kirenskii Institute of Physics,Siberian Division,Russian Academy of Sciences)
• Gavrilyuk A.P. (Siberian Federal University)
• Gerasimov V.S. (Siberian Federal University)
• Grachev A.S. (Siberian Federal University)

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