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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
Polymer translocation into laterally unbounded confined environments.
1Department of Polymer Science and Engineering, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui Province 230026, People's Republic of China. kluo@ustc.edu.cn
The Journal of Chemical Physics
|August 24, 2010
Summary
Polymer translocation dynamics are altered by confinement between walls. Translocation time decreases with increasing wall separation, showing a nonuniversal force dependence in crowded environments.
Area of Science:
- Polymer Physics
- Soft Matter Physics
- Computational Biophysics
Background:
- Polymer translocation is crucial in biological processes and nanotechnology.
- Understanding translocation dynamics in confined geometries is essential for designing nanoscale devices.
- Crowding effects significantly influence polymer behavior.
Purpose of the Study:
- To investigate the influence of confinement on polymer translocation dynamics.
- To analyze the effect of wall separation and driving force on translocation time.
- To explore the role of crowding in altered translocation behavior.
Main Methods:
- Three-dimensional Langevin dynamics simulations were employed.
- The system studied involved a polymer translocating between two parallel plane walls.
- System parameters included wall separation (R) and driving force (F).
Main Results:
- Confinement between walls significantly alters translocation dynamics compared to unconfined environments.
- Translocation time (tau) initially decreases rapidly with increasing wall separation (R) and then saturates.
- The confined environment results in a nonuniversal dependence of translocation time on the driving force (F).
Conclusions:
- Crowding effects from partially translocated monomers are a key factor in modified translocation dynamics.
- Wall separation influences translocation time, with saturation observed beyond a certain R.
- The driving force's impact on translocation time is dependent on the degree of confinement.
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