Polymer translocation through a nanopore under a pulling force

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dc.creatorHuopaniemi, Ilkka
dc.creatorluo, Kaifu
dc.creatorAla-Nissila, Tapio
dc.creatorYing, See-Chen
dc.date2006-08-23
dc.date2007-05-01
dc.date.accessioned2026-07-07T08:12:30Z
dc.date.available2026-07-07T08:12:30Z
dc.descriptionWe investigate polymer translocation through a nanopore under a pulling force using Langevin dynamics simulations. We concentrate on the influence of the chain length $N$ and the pulling force $F$ on the translocation time $τ$. The distribution of $τ$ is symmetric and narrow for strong $F$. We find that $τ\sim N^{2}$ and translocation velocity $v\sim N^{-1}$ for both moderate and strong $F$. For infinitely wide pores, three regimes are observed for $τ$ as a function of $F$. With increasing $F$, $τ$ is independent of $F$ for weak $F$, and then $τ\sim F^{-2+ν^{-1}}$ for moderate $F$, where $ν$ is the Flory exponent, which finally crosses over to $τ\sim F^{-1}$ for strong force. For narrow pores, even for moderate force $τ\sim F^{-1}$. Finally, the waiting time, for monomer $s$ and monomer $s+1$ to exit the pore, has a maximum for $s$ close to the end of the chain, in contrast to the case where polymer is driven by an external force within the pore.
dc.descriptionsubmitted, 7 pages with 5 figures. To appear in PRE
dc.identifierhttps://arxiv.org/abs/cond-mat/0608499
dc.identifierhttp://arxiv.org/abs/cond-mat/0608499
dc.identifierPhys. Rev. E 75, 061912 (2007)
dc.identifierdoi:10.1103/PhysRevE.75.061912
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/132476
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titlePolymer translocation through a nanopore under a pulling force
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