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Paper   IPM / Nano-Sciences / 16445
School of Nano Science
  Title:   Polymer translocation through nanopore assisted by an environment of active rods
  Author(s): 
1.  Hamidreza Khalilian
2.  Jalal Sarabadani
3.  Tapio Ala-Nissila
  Status:   Submitted
  Journal:
  Year:  2020
  Supported by:  IPM
  Abstract:
We use a combination of computer simulations and iso-flux tension propagation (IFTP) theory to investigate translocation dynamics of a flexible linear polymer through a nanopore into an environment composed of repulsive active rods in 2D. We demonstrate that the rod activity induces a crowding effect on the polymer, leading to a time-dependent net force that facilitates translocation into the active environment. Incorporating this force into the IFTP theory for pore-driven translocation allows us to characterize translocation dynamics in detail and derive a scaling form for the average translocation time as tau L Î½r/F SP, where L r and F SP are the rod length and self-propelling force acting on the rods, respectively, and ν is the Flory exponent.

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