Passage Times for Unbiased Polymer Translocation through a Narrow Pore

Details Passage Times for Unbiased Polymer Translocation through a Narrow Pore Passage Times for Unbiased Polymer Translocation through a Narrow Pore

2005-09-22

arxiv.org/abs/cond-mat/0509577v3

Phys. Rev. Lett. 96, 208301 (2006)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.96.208301

We study the translocation process of a polymer in the absence of external fields for various pore diameters $b$ and membrane thickness $L$. The polymer performs Rouse and reptation dynamics. The mean translocation time $<\tau_t>$ that the polymer needs to escape from a cell, and the mean dwell time $<\tau_d>$ that the polymer spends in the pore during the translocation process, obey scaling relations in terms of the polymer length $N$, $L$ and $b/R_g$, where $R_g$ is the radius of gyration for the polymer. We explain these relations using simple arguments based on polymer dynamics and the equilibrium properties of polymers.

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