Comparison of aggregation of rodlike and spherical particles: A fractal analysis (original) (raw)

The Journal of Chemical Physics, 1997

Abstract

Different structure-analyzing methods were applied to experimental and computer generated two-dimensional clusters. The real structures formed at water–air interfaces from polydisperse, cylindrical-shape carbon (thickness: 35 μm; average length: 140 μm) and close to monodisperse, spherical-shape glass (75 μm diam) microparticles. The clusters were characterized by the fractal dimension (Df) and the surface coverage (q) values in the case of individual clusters. For a series of different sized aggregates, the fractal dimension (Df) was also evaluated from the ln q versus ln Rg functions where Rg is the radius of gyration. The fractal dimensions for individual clusters determined by box counting, sand box, and by correlation function methods, were compared with each other and with those obtained for the series of clusters. Using the above methods, the aggregation of cylindrical carbon and spherical glass particles was studied from a structural point of view. The surface of glass beads...

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