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Monomer Distributions and Intrachain Collisions of a Polymer Confined to a Channel

Werner, E.; Westerlund, F.; Tegenfeldt, Jonas LU and Mehlig, B. (2013) In Macromolecules 46(16). p.6644-6650
Abstract
We study the conformations of a self-avoiding polymer confined to a channel by computing the cross-sectional distributions of the positions of its monomers. By means of Monte Carlo simulations for a self-avoiding, freely jointed chain, we determine how the cross-sectional distribution for a given monomer depends on its location in the polymer and how strongly this distribution is affected by self-avoidance. To this end we analyze how the frequency of intrachain collisions between monomers depends on their spatial position in the channel and on their location within the polymer. We show that most collisions occur between closely neighboring monomers. As a consequence, the collision probability depends only weakly on the spatial position of... (More)
We study the conformations of a self-avoiding polymer confined to a channel by computing the cross-sectional distributions of the positions of its monomers. By means of Monte Carlo simulations for a self-avoiding, freely jointed chain, we determine how the cross-sectional distribution for a given monomer depends on its location in the polymer and how strongly this distribution is affected by self-avoidance. To this end we analyze how the frequency of intrachain collisions between monomers depends on their spatial position in the channel and on their location within the polymer. We show that most collisions occur between closely neighboring monomers. As a consequence, the collision probability depends only weakly on the spatial position of the monomers. Our results explain why the effect of self-avoidance on the monomer distributions is weaker than predicted by mean-field theory. We discuss the relevance of our results for studies of DNA conformations in nanofluidic channels. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Macromolecules
volume
46
issue
16
pages
6644 - 6650
publisher
The American Chemical Society
external identifiers
  • wos:000323811100029
  • scopus:84883235752
ISSN
0024-9297
DOI
10.1021/ma400464c
language
English
LU publication?
yes
id
f21ef02d-94dd-4c43-982c-dbb1f2d84b30 (old id 4062436)
date added to LUP
2013-10-22 09:19:00
date last changed
2019-03-19 01:23:03
@article{f21ef02d-94dd-4c43-982c-dbb1f2d84b30,
  abstract     = {We study the conformations of a self-avoiding polymer confined to a channel by computing the cross-sectional distributions of the positions of its monomers. By means of Monte Carlo simulations for a self-avoiding, freely jointed chain, we determine how the cross-sectional distribution for a given monomer depends on its location in the polymer and how strongly this distribution is affected by self-avoidance. To this end we analyze how the frequency of intrachain collisions between monomers depends on their spatial position in the channel and on their location within the polymer. We show that most collisions occur between closely neighboring monomers. As a consequence, the collision probability depends only weakly on the spatial position of the monomers. Our results explain why the effect of self-avoidance on the monomer distributions is weaker than predicted by mean-field theory. We discuss the relevance of our results for studies of DNA conformations in nanofluidic channels.},
  author       = {Werner, E. and Westerlund, F. and Tegenfeldt, Jonas and Mehlig, B.},
  issn         = {0024-9297},
  language     = {eng},
  number       = {16},
  pages        = {6644--6650},
  publisher    = {The American Chemical Society},
  series       = {Macromolecules},
  title        = {Monomer Distributions and Intrachain Collisions of a Polymer Confined to a Channel},
  url          = {http://dx.doi.org/10.1021/ma400464c},
  volume       = {46},
  year         = {2013},
}