Dynamic properties of an extended polymer in solution

被引：70

作者：

Hatfield, JW ^{[1
]}

Quake, SR ^{[1
]}

机构：

[1] CALTECH, Dept Appl Phys, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.82.3548

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Extended polymers an relevant in a variety of situations ranging From the classic coil-stretch problem to recent single molecule polymer experiments with DNA. We present theoretical calculations and computer simulations of the dynamic properties of extended single polymers. We discuss the effects of tension and hydrodynamics on tau, the fundamental relaxation time of the polymer, and find that tension dominates the behavior of tau. Furthermore, the symmetry breaking caused by extending the polymer "splits" tau, leading to distinct longitudinal and transverse relaxation times. Our results an in agreement with recent experiments, and we discuss implications for the coil-stretch transition.

引用

页码：3548 / 3551

页数：4