The entrance dynamics of polymers into a gel

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We use computer simulations to study the (driven) dynamics of a charged polymer in a disordered medium, thus mimicking the setting used in gel electrophoresis. In agreement with experiments, we find that inside the gel the mobility of the polymer is only a weak function of its length N. In contrast to this, the mean entrance time into the gel, is a very strong function of N, <tau_e > \propto N^1.3, and does not show any sign of saturation with increasing N. We rationalize this effect by means of a simple model and propose an experimental setup that should allow to increase the separation ability of gel electrophoresis significantly.
7 pages of Latex, 4 figures

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Statistical Mechanics, Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/16436

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0006049
 http://arxiv.org/abs/cond-mat/0006049

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arXiv