Length-dependent translocation of polymers through nanochannels

Ledesma-Aguilar, Rodrigo, Sakaue, Takahiro and Yeomans, Julia (2012) Length-dependent translocation of polymers through nanochannels. Soft Matter, 8 (6). pp. 1884-1892. ISSN 1744-683X

Full text not available from this repository. (Request a copy)
Official URL: http://dx.doi.org/10.1039/C1SM06188G

Abstract

We consider the flow-driven translocation of single polymer chains through nanochannels. Using analytical calculations based on the de Gennes blob model and mesoscopic numerical simulations, we estimate the threshold flux for the translocation of chains of different number of monomers. The translocation of the chains is controlled by the competition between entropic and hydrodynamic effects, which set a critical penetration length for the chain before it can translocate through the channel. We demonstrate that the polymers show two different translocation regimes depending on how their length under confinement compares to the critical penetration length. For polymer chains longer than the threshold, the translocation process is insensitive to the number of monomers in the chain as predicted in Sakaue et al., Euro. Phys. Lett., 2005, 72, 83. However, for chains shorter than the critical length we show that the translocation process is strongly dependent on the length of the chain. We discuss the possible relevance of our results to biological transport.

Item Type: Article
Subjects: F200 Materials Science
F300 Physics
Department: Faculties > Engineering and Environment > Physics and Electrical Engineering
Related URLs:
Depositing User: Ellen Cole
Date Deposited: 16 Dec 2013 12:49
Last Modified: 10 Aug 2015 11:15
URI: http://nrl.northumbria.ac.uk/id/eprint/14828

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence