Paper
IPM / NanoSciences / 15416 
School of Nano Science

Title: 
Theory of poredriven and endpulled polymer translocation dynamics through a nanopore: an overview

Author(s): 
1 . 
Jalal Sarabadani
 2 . 
Tapio AlaNissila


Status: 
Published

Journal: 
J. Physics: Condens. Matter

No.: 
27

Vol.: 
30

Year: 
2018

Pages: 
274002

Supported by: 
IPM


Abstract: 
We review recent progress on the theory of dynamics of polymer translocation through a nanopore based on the isoflux tension propagation (IFTP) theory. We investigate both poredriven translocation of flexible and a semiflexible polymers, and the endpulled case of flexible chains by means of the IFTP theory and extensive molecular dynamics (MD) simulations. The validity of the IFTP theory can be quantified by the waiting time distributions of the monomers which reveal the details of the dynamics of the translocation process. The IFTP theory allows a parameterfree description of the translocation process and can be used to derive exact analytic scaling forms in the appropriate limits, including the influence due to the pore friction that appears as a finitesize correction to asymptotic scaling. We show that in the case of poredriven semiflexible and endpulled polymer chains the IFTP theory must be augmented with an explicit trans side friction term for a quantitative description of the translocation process.
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