Passage Times for Polymer Translocation Pulled through a Narrow Pore

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dc.creatorPanja, Debabrata
dc.creatorBarkema, Gerard T.
dc.date2007-06-27
dc.date2007-08-16
dc.date.accessioned2026-07-07T09:20:22Z
dc.date.available2026-07-07T09:20:22Z
dc.descriptionWe study the passage times of a translocating polymer of length $N$ in three dimensions, while it is pulled through a narrow pore with a constant force $F$ applied to one end of the polymer. At small to moderate forces, satisfying the condition $FN^ν/k_BT\lesssim1$, where $ν\approx0.588$ is the Flory exponent for the polymer, we find that $τ_N$, the mean time the polymer takes to leave the pore, scales as $N^{2+ν}$ independent of $F$, in agreement with our earlier result for F=0. At strong forces, i.e., for $FN^ν/k_BT\gg1$, the behaviour of the passage time crosses over to $τ_N\sim N^2/F$. We show here that these behaviours stem from the polymer dynamics at the immediate vicinity of the pore -- in particular, the memory effects in the polymer chain tension imbalance across the pore.
dc.description7 pages, 4 figures, 6 eps figure files, minor expressions changed, references updated; to appear in Biophys. J
dc.identifierhttps://arxiv.org/abs/0706.3969
dc.identifierhttp://arxiv.org/abs/0706.3969
dc.identifierBiophys. J. 94, 1630-1637 (2008)
dc.identifierdoi:10.1529/biophysj.107.116434
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/154698
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.subjectBiological Physics
dc.subjectBiomolecules
dc.titlePassage Times for Polymer Translocation Pulled through a Narrow Pore
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