Polymer translocation in an environment of active rods

Thumbnail Image

Access rights

openAccess

URL

Journal Title

Journal ISSN

Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)

Authors

Date

2023-04

Department

Department of Applied Physics

Major/Subject

Mcode

Degree programme

Language

en

Pages

Series

PHYSICAL REVIEW RESEARCH, Volume 5, issue 2

Abstract

We consider the dynamics of a translocation process of a flexible linear polymer through a nanopore into an environment of active rods in the trans side. Using Langevin dynamics simulations, we show that the rods facilitate translocation to the trans side even when there are initially more monomers on the cis than on the trans side. Structural analysis of the translocating polymer reveals that active rods induce a folded structure to the trans-side subchain in the case of successful translocation events. By keeping the initial number of monomers on the cis-side subchain fixed, we map out a state diagram for successful events as a function of the rod number density for a variety of system parameters. This reveals competition between facilitation by the rods at low densities and crowding that hinders translocation at higher densities.

Description

Funding Information: Computational resources from CSC - Center for Scientific Computing Ltd. and from the Aalto University School of Science “Science-IT” project are gratefully acknowledged. T.A-N. has been supported in part by the Academy of Finland through its PolyDyna (No. 307806) and QFT Center of Excellence Program Grants (No. 312298).

Keywords

Other note

DOI

10.1103/PhysRevResearch.5.023107

Citation

Khalilian, H, Sarabadani, J & Ala-Nissila, T 2023, ' Polymer translocation in an environment of active rods ', PHYSICAL REVIEW RESEARCH, vol. 5, no. 2, 023107 . https://doi.org/10.1103/PhysRevResearch.5.023107

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202308014649

Collections

[article-cris] Perustieteiden korkeakoulu / SCI