Driven polymer translocation into a channel: Isoflux tension propagation theory and Langevin dynamics simulations
- Isoflux tension propagation (IFTP) theory and Langevin dynamics (LD) simulations are employed to study the dynamics of channel-driven polymer translocation in which a polymer translocates into a narrow channel and the monomers in the channel experience a driving force fc. In the high driving force limit, regardless of the channel width, IFTP theory predicts τ ∝ f βc for the translocation time, where β = −1 is the force scaling exponent. Moreover, LD data show that for a very narrow channel fitting only a single file of monomers, the entropic force due to the subchain inside the channel does not play a significant role in the translocation dynamics and the force exponent β = −1 regardless of the force magnitude. As the channel width increases the number of possible spatial configurations of the subchain inside the channel becomes significant and the resulting entropic force causes the force exponent to drop below unity.
Author details: | Jalal SarabadaniORCiD, Ralf MetzlerORCiDGND, Tapio Ala-NissilaORCiD |
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URN: | urn:nbn:de:kobv:517-opus4-574387 |
DOI: | https://doi.org/10.25932/publishup-57438 |
ISSN: | 1866-8372 |
Title of parent work (German): | Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe |
Publication series (Volume number): | Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (1292) |
Publication type: | Postprint |
Language: | English |
Date of first publication: | 2023/01/10 |
Publication year: | 2022 |
Publishing institution: | Universität Potsdam |
Release date: | 2023/01/10 |
Issue: | 1292 |
Number of pages: | 14 |
First page: | 033003-1 |
Last Page: | 033003-14 |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Peer review: | Referiert |
Publishing method: | Open Access / Green Open-Access |
License (German): | CC-BY - Namensnennung 4.0 International |
External remark: | Bibliographieeintrag der Originalveröffentlichung/Quelle |