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Title: Morphological changes in convection-diffusion-limited deposition
Author: Nagatani, Takashi
Sagués i Mestre, Francesc
Keywords: Electroquímica
Física estadística
Processos estocàstics
Statistical physics
Stochastic processes
Issue Date: 1991
Publisher: The American Physical Society
Abstract: The effect of hydrodynamic flow upon diffusion-limited deposition on a line is investigated using a Monte Carlo model. The growth process is governed by the convection and diffusion field. The convective diffusion field is simulated by the biased-random walker resulting from a superimposed drift that represents the convective flow. The development of distinct morphologies is found with varying direction and strength of drift. By introducing a horizontal drift parallel to the deposition plate, the diffusion-limited deposit changes into a single needle inclined to the plate. The width of the needle decreases with increasing strength of drift. The angle between the needle and the plate is about 45° at high flow rate. In the presence of an inclined drift to the plate, the convection-diffusion-limited deposit leads to the formation of a characteristic columnar morphology. In the limiting case where the convection dominates, the deposition process is equivalent to ballistic deposition onto an inclined surface.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review A, 1991, vol. 43, núm. 6, p. 2970-2976.
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ISSN: 1050-2947
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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