Dissipative particle dynamics simulations of polymer chains: Scaling laws and shearing response compared to DNA experiments

被引：106
|
作者：
Symeonidis, V [1 ]
Karniadakis, GE
Caswell, B
机构：
[1] Brown Univ, Div Appl Math, Providence, RI 02912 USA
[2] Brown Univ, Div Engn, Providence, RI 02912 USA
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 07期
关键词：
D O I：
10.1103/PhysRevLett.95.076001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Dissipative particle dynamics simulations of several bead-spring representations of polymer chains in dilute solution are used to demonstrate the correct static scaling laws for the radius of gyration. Shear flow results for the wormlike chain simulating single DNA molecules compare well with average extensions from experiments, irrespective of the number of beads. However, coarse graining with more than a few beads degrades the agreement of the autocorrelation of the extension.
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页数：4
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