| Issue |
Europhys. Lett.
Volume 45, Number 2, January 1999
|
|
|---|---|---|
| Page(s) | 162 - 168 | |
| Section | Atomic and molecular physics | |
| DOI | https://doi.org/10.1209/epl/i1999-00141-0 | |
| Published online | 01 September 2002 | |
Dynamics of swollen fractal networks
Departamento de Física - ICEx, Universidade Federal de
Minas Gerais
CP 702, 30161-970, Belo Horizonte/MG - Brasil
Received:
20
July
1998
Accepted:
12
November
1998
The dynamics of swollen fractal networks (Rouse model) has been studied
through computer simulations. The fluctuation-relaxation theorem was used
instead of the usual Langevin approach to Brownian dynamics. We measured the
equivalent of the mean square displacement 
and the
coefficient of self-diffusion D of two- and three-dimensional Sierpinski networks
and of the two-dimensional percolation network. The results showed an anomalous
diffusion, i.e. , a power law for D, decreasing with time with
an exponent proportional to the spectral dimension of the network.
PACS: 36.20.Ey – Conformation (statistics and dynamics) / 83.20.Jp – Computer simulation / 83.10.Nn – Polymer dynamics
© EDP Sciences, 1999
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