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Polymers 2016, 8(9), 332; doi:10.3390/polym8090332

The Semiflexible Polymer Translocation into Laterally Unbounded Region between Two Parallel Flat Membranes

1
Department of Physics, Jiangxi Agricultural University, Nanchang 330045, China
2
College of Mathematics Physics and Information Engineering, Jiaxing University, Jiaxing 314001, China
3
Department of Chemistry, Jiangxi Agricultural University, Nanchang 330045, China
*
Author to whom correspondence should be addressed.
Academic Editor: Martin Kröger
Received: 27 June 2016 / Revised: 28 August 2016 / Accepted: 30 August 2016 / Published: 7 September 2016
(This article belongs to the Special Issue Semiflexible Polymers)
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Abstract

Using the dynamic Monte Carlo method, we investigate dynamics of semiflexible polymer translocation through a nanopore into laterally unbounded region between two parallel flat membranes with separation R in presence of an electric field inside the pore. The average translocation time τ initially decreases rapidly with increase of R in the range of R < 10 and then almost keeps constant for R ≥ 10, and the decline range increases with increase of dimensionless bending stiffness κ. We mainly study the effect of chain length N, κ and electric field strength E on the translocation process for R = 5. The translocation dynamics is significantly altered in comparison to an unconfined environment. We find τ ~ Nα, where the exponent α increases with increase of E for small κ. α initially increases slowly with increase of E and then keeps constant for moderate κ. α decreases with increase of E for large κ. However, α decreases with increase of κ under various E. In addition, we find τ ~ κβ. β decreases with increase of N under various E. These behaviors are interpreted in terms of the probability distribution of translocation time and the waiting time of an individual monomer segment passing through the pore during translocation. View Full-Text
Keywords: Monte Carlo method; semiflexible polymer; translocation; scaling law Monte Carlo method; semiflexible polymer; translocation; scaling law
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MDPI and ACS Style

Yang, Z.-Y.; Chai, A.-H.; Yang, Y.-F.; Li, X.-M.; Li, P.; Dai, R.-Y. The Semiflexible Polymer Translocation into Laterally Unbounded Region between Two Parallel Flat Membranes. Polymers 2016, 8, 332.

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