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공공누리This item is licensed Korea Open Government License

Title
Expansion dynamics of a self-avoiding polymer in a cylindrical pore
Author(s)
정형진
Publication Year
2014-01-13
Abstract
Inspired by recent bacterial chromosome experiments in narrow channels, we simulate the expansion (and internal) dynamics of a self-avoiding polymer under cylindrical confinement. The chain is trapped in a piston, compressed up to 20% of its equilibrium length, and released unidirectionally from the right end of the piston. Our results suggest that the chain initially expands like a concentrated hard-sphere system, enters a subdiffusive regime at an intermediate time, and eventually relaxes globally to its equilibrium size. Using our results, we test a few theoretical models (e.g., a Flory-type approach), in which the blob-blob or monomer-monomer interaction determines “expansion forces,” clarifying their applicability. Our results can be used for exploring further the polymer aspect of bacterial chromosomes.
Keyword
Polymer dynamics; Simulation; Modeling; Polymer theory
Journal Title
Europhysics Letters
ISSN
0295-5075
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Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/14360
http://www.ndsl.kr/ndsl/search/detail/article/articleSearchResultDetail.do?cn=NART68629721
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