Random sequential adsorption of polyatomic species on fractal substrates.
Identifieur interne : 002438 ( Main/Exploration ); précédent : 002437; suivant : 002439Random sequential adsorption of polyatomic species on fractal substrates.
Auteurs : V. Cornette [Argentine] ; A J Ramirez-Pastor ; F. NietoSource :
- Physical review. E, Statistical, nonlinear, and soft matter physics [ 1550-2376 ] ; 2011.
Abstract
Random sequential adsorption of k-mers of different sizes and shapes deposited on two types of fractal surfaces (deterministic and statistical) is studied. These kinds of substrates present intrinsic heterogeneities. As a consequence, the average coordination number depends on the topology that characterizes the adsorbent. For discrete models, at the late stage the surface coverage evolves according to θ(t)=θ(j)-Aexp[-t/σ], where θ(j) is the jamming coverage while A and σ are fitting parameters. A detailed analysis of how these main quantities [θ(j), σ] depend on the relationship between the geometry of the adsorbate and the adsorbent is presented. The results obtained suggest that the symmetry of the substrate may exert a decisive influence on the adsorption kinetics of polyatomic species.
DOI: 10.1103/PhysRevE.83.051119
PubMed: 21728502
Affiliations:
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