Ejection dynamics of a ring polymer out of a nanochannel

Details Ejection dynamics of a ring polymer out of a nanochannel Ejection dynamics of a ring polymer out of a nanochannel

2011-09-18

arxiv.org/abs/1109.3881v1

Soft Matter, 8, 367 (2012)

Physics

Condensed Matter

Soft Condensed Matter

8 pages, 10 figures. To appear in Soft Matter

Scientific paper

10.1039/c1sm06562a

We investigate the ejection dynamics of a ring polymer out of a cylindrical nanochannel using both theoretical analysis and three dimensional Langevin dynamics simulations. The ejection dynamics for ring polymers shows two regimes like for linear polymers, depending on the relative length of the chain compared with the channel. For long chains with length $N$ larger than the critical chain length $N_{c}$, at which the chain just fully occupies the nanochannel, the ejection for ring polymers is faster compared with linear chains of identical length due to a larger entropic pulling force; while for short chains ($N

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