Condensed states of a semiflexible homopolymer: ordered globules and toroids

被引：18

作者：

Cooke, IR

Williams, DRM ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Phys Sci, Canberra, ACT 0200, Australia

[2] MPI Polymerforsch, D-55128 Mainz, Germany

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2004年 / 339卷 / 1-2期

关键词：

DNA condensation; semiflexible polymer; Brownian dynamics simulation; toroids; phase transition;

D O I：

10.1016/j.physa.2004.03.039

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine the condensed states for a semiflexible polymer in poor solvent as a function of stiffness, focusing on the transition region between globule and torus. Conservative estimates for the upper and lower bounds to the globule-torus transition region are found. These are then used to demonstrate that the polymer globule undergoes considerable changes to its overall morphology and internal packing arrangements for stiffness values outside this transition region. Using a variety of methods we characterize these globular structures as stiffness is varied. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：45 / 52

页数：8

共 24 条

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