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

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 $\tau \sim N^{1+\nu }$ under weak driving force $F$, while $\tau \sim F^{-1}L$ 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.

7 pages, 10 figures

References in corpus (10)

• Nonequilibrium dynamics of polymer translocation and straightening
• Polymer translocation through a nanopore - a showcase of anomalous diffusion
• Driven polymer translocation through a nanopore: a manifestation of anomalous diffusion
• Dynamical Scaling Exponents for Polymer Translocation through a Nanopore
• Comment on ``Passage Times for Unbiased Polymer Translocation through a Narrow Pore''
• Pore-blockade Times for Field-Driven Polymer Translocation
• Polymer translocation through a nanopore under a pulling force
• Heteropolymer translocation through nanopores
• Polymer translocation into a fluidic channel through a nanopore
• Critical evaluation of the computational methods used in the forced polymer translocation