Percolation connectivity in deposits obtained using competitive random sequential adsorption of binary disk mixtures

Abstract

Connectedness percolation phenomena in the two-dimensional (2D) packing of binary mixtures of disks with different diameters were studied numerically. The packings were produced using random sequential adsorption (RSA) model with simultaneous deposition of disks. The ratio of the particle diameters was varied within the range $D=1$-$10$, and the selection probability of the small disks was varied within the range 0-1. A core-shell structure of the particles was assumed for the analysis of connectivity. The packing coverages in a jamming state for different components, connectivities through small, large and both types of disks, the behavior of electrical conductivity were analyzed. The observed complex effects were explained accounting for the formation of conductive "bridges" from small disks in pores between large disks.

12 pages, 10 figures

References in corpus (6)

• Continuum Percolation Thresholds in Two Dimensions
• Random Sequential Adsorption on Fractals
• Effect of particle polydispersity on the irreversible adsorption of fine particles on patterned substrates
• Random sequential adsorption of partially ordered discorectangles onto a continuous plane
• Connectedness percolation in the random sequential adsorption packings of elongated particles
• Two-stage random sequential adsorption of discorectangles and disks on a two-dimensional surface