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arXiv · 1203.5118

Driven polymer translocation through a cylindrical nanochannel: Interplay between the channel length and the chain length

Huaisong Yong·Yilin Wang·Shichen Yuan·Bi Xu·Kaifu Luo
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Abstract

Using analytical techniques and Langevin dynamics simulations, we investigate the dynamics of polymer translocation through a nanochannel embedded in two dimensions under an applied external field. We examine the translocation time for various ratio of the channel length $L$ to the polymer length $N$. For short channels $L\ll N$, the translocation time $τ\sim N^{1+ν}$ under weak driving force $F$, while $τ\sim F^{-1}L$ for long channels $L\gg N$, independent of the chain length $N$. Moreover, we observe a minimum of translocation time as a function of $L/N$ for different driving forces and channel widths. These results are interpreted by the waiting time of a single segment.

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Huaisong Yong, Yilin Wang, Shichen Yuan, Bi Xu, Kaifu Luo. 2012-03-22. Driven polymer translocation through a cylindrical nanochannel: Interplay between the channel length and the chain length. https://doi.org/10.1039/c2sm06942c

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