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Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
Published on: September 26, 2016
Pore-polymer interaction reveals nonuniversality in forced polymer translocation
V V Lehtola1, K Kaski, R P Linna
1Department of Biomedical Engineering and Computational Science, Aalto University, P.O. Box 12200, FI-00076 Aalto, Finland.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|January 15, 2011
Summary
Numerical simulations reveal that the choice of pore model significantly impacts polymer translocation dynamics. Model details alter scaling relations, highlighting challenges in simulating biopolymer translocation at realistic scales.
Area of Science:
- Polymer physics
- Computational biophysics
- Nanopore technology
Background:
- Forced polymer translocation through nanopores is crucial for biological processes and nanotechnology.
- Previous computational studies have extensively used various pore models to understand this phenomenon.
- However, the influence of different pore models on translocation dynamics remains incompletely understood.
Purpose of the Study:
- To numerically investigate the effect of different pore models on forced polymer translocation.
- To analyze how pore model variations influence translocation characteristics within biologically relevant force ranges.
- To assess the impact of model details on scaling relations and out-of-equilibrium dynamics.
Main Methods:
- Numerical simulations were performed using two distinct, commonly employed pore models.
- The study focused on the regime of applied pore force, representing the driving force for translocation.
- Analysis included examining translocation characteristics and derived scaling relations.
Main Results:
- Significant variations in forced translocation characteristics were observed due to differences in the pore models used.
- The choice of pore model demonstrably altered the obtained scaling relations.
- These changes suggest strongly out-of-equilibrium dynamics in current computational approaches.
Conclusions:
- The selection of a pore model is a critical factor in numerical studies of forced polymer translocation.
- Current computational models may not fully capture the complex dynamics of biopolymer translocation at realistic scales due to model-dependent effects.
- Further refinement of pore models is necessary for accurate simulations of biopolymer behavior in nanopores.
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