| Autor: |
Wolterink, J. Klein, Barkema, G. T. |
| Předmět: |
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| Zdroj: |
Molecular Physics; 11/10/2005, Vol. 103 Issue 21-23, p3083-3089, 7p |
| Abstrakt: |
Rubinstein's repton model, extended by van Heukelum and Barkema for the simulation of polymer melts, is studied. This model has two dynamical mechanisms, explicit reptation and sideways motion, each with a prescribed rate. We study how the polymer diffusion coefficient depends on the ratio γ of these rates, while the sum of these rates is kept constant. We find that the diffusion coefficient of the polymers as a function of γ is not simply a linear combination of the contributions of the individual mechanisms; there is a large amount of cooperativity between the two kinds of mechanisms. A better understanding of this cooperativity might benefit research in a wide range of topics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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