Title

Dna Confined In A Two-Dimensional Strip Geometry

Abstract

Semiflexible polymers characterized by the contour length L and persistent length confined in a spatial region D have been described as a series of "spherical blobs" and "deflecting lines" by de Gennes and Odjik for and , respectively. Recently new intermediate regimes (extended de Gennes and Gauss-de Gennes) have been investigated by Tree et al. (Phys. Rev. Lett., 110 (2013) 208103). In this letter we derive scaling relations to characterize these transitions in terms of universal scaled fluctuations in d-dimension as a function of , and D, and show that the Gauss-de Gennes regime is absent and the extended de Gennes regime is vanishingly small for polymers confined in a 2D strip. We validate our claim by an extensive Brownian dynamics (BD) simulation which also reveals that the prefactor A used to describe the chain extension in the Odjik limit is independent of the physical dimension d and is the same as previously found by Yang et al. (Phys. Rev. E, 76 (2007) 011804). Our studies are relevant for optical maps of DNA stretched inside a nanostrip. © Copyright 2014 EPLA.

Publication Date

1-1-2014

Publication Title

EPL

Volume

106

Issue

1

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1209/0295-5075/106/18004

Socpus ID

84898627335 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84898627335

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