Influence of Polymer-Pore Interactions on Translocation

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2007
Major/Subject
Mcode
Degree programme
Language
en
Pages
148102/1-4
Series
Physical Review Letters, Volume 99, Issue 14
Abstract
We investigate the influence of polymer-pore interactions on the translocation dynamics using Langevin dynamics simulations. An attractive interaction can greatly improve the translocation probability. At the same time, it also increases the translocation time slowly for a weak attraction while an exponential dependence is observed for a strong attraction. For fixed driving force and chain length the histogram of translocation time has a transition from Gaussian distribution to long-tailed distribution with increasing attraction. Under a weak driving force and a strong attractive force, both the translocation time and the residence time in the pore show a nonmonotonic behavior as a function of the chain length. Our simulations results are in good agreement with recent experimental data.
Description
Keywords
polymer translocation, translocation time, interaction, Langevin dynamics simulations
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Citation
Luo, Kaifu & Ala-Nissilä, Tapio & Ying, See-Chen & Bhattacharya, Aniket. 2007. Influence of Polymer-Pore Interactions on Translocation. Physical Review Letters. Volume 99, Issue 14. P. 148102/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.99.148102.