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Title: Effect of drift on segregation in two-component diffusion-limited aggregation
Author: Nagatani, Takashi
Sagués i Mestre, Francesc
Claret Bonet, Josep
Mas i Pujadas, Francesc
Trigueros, Pedro Pablo
Mach, Jordi
Keywords: Termodinàmica
Fluctuacions (Física)
Fenòmens crítics (Física)
Fluctuation phenomena
Critical phenomena (Physics)
Issue Date: 1992
Publisher: The American Physical Society
Abstract: An effect of drift is investigated on the segregation pattern in diffusion-limited aggregation (DLA) with two components (A and B species). The sticking probability PAB (=PBA) between the different species is introduced into the DLA model with drift, where the sticking probability PAA (=PBB) between the same species equals 1. By using computer simulation it is found that the drift has an important effect on not only the morphology but also the segregation pattern. Under the drift and the small sticking probability, a characteristic pattern appears where elongated clusters of A species and of B species are periodically dispersed. The period decreases with increasing drift. The periodic structure of the deposits is characterized by an autocorrelation function. The shape of the cluster consisting of only A species (or B species) shows a vertically elongated filamentlike structure. Each cluster becomes vertically longer with decreasing sticking probability PAB. The segregation pattern is distinctly different from that with no drift and a small sticking probability PAA. The effect of the concentration on the segregation pattern is also shown.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review A, 1992, vol. 45, núm. 6, p. 3896-3902.
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ISSN: 1050-2947
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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