Fractal dimension and degree of order in sequential deposition of mixture

Details Fractal dimension and degree of order in sequential deposition of mixture Fractal dimension and degree of order in sequential deposition of mixture

1997-01-10

arxiv.org/abs/cond-mat/9701072v1

Physics

Condensed Matter

Statistical Mechanics

16 pages Latex, Submitted to Phys. Rev. E

Scientific paper

10.1103/PhysRevE.55.5302

We present a number models describing the sequential deposition of a mixture of particles whose size distribution is determined by the power-law $p(x) \sim \alpha x^{\alpha-1}$, $x\leq l$ . We explicitly obtain the scaling function in the case of random sequential adsorption (RSA) and show that the pattern created in the long time limit becomes scale invariant. This pattern can be described by an unique exponent, the fractal dimension. In addition, we introduce an external tuning parameter beta to describe the correlated sequential deposition of a mixture of particles where the degree of correlation is determined by beta, while beta=0 corresponds to random sequential deposition of mixture. We show that the fractal dimension of the resulting pattern increases as beta increases and reaches a constant non-zero value in the limit $\beta \to \infty$ when the pattern becomes perfectly ordered or non-random fractals.

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