Volume 70, Number 1, April 2005
|Page(s)||109 - 115|
|Section||Condensed matter: structural, mechanical and thermal properties|
|Published online||09 March 2005|
Diffusion in disordered fractals
Institut für Physik, Technische Universität Chemnitz - D-09107 Chemnitz, Germany
2 Condensed Matter Physics Research Centre, Jadavpur University Kolkata 700032, India
Accepted: 11 February 2005
Diffusion in disordered media can be modelled by the anomalous diffusion in fractals. Up to now, usually regular fractals were used as models for such disordered systems. Here we study disordered fractals in an attempt to capture the random nature of the disordered material. In particular, we investigate the diffusion in fractals obtained by randomly mixing different Sierpinski carpet generators. We find that the random-walk exponent dw shows strong dependance on the mixture composition. For the mixed system it can be higher or lower than both the pure components. Further, dw may decrease on mixing, indicating faster diffusion in the disordered system.
PACS: 61.43.Hv – Fractals; macroscopic aggregates (including diffusion-limited aggregates) / 66.30.-h – Diffusion in solids
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.