半柔性聚合物的松弛动力学
Relaxation dynamics of semiflexible polymers.
作者信息
Bohbot-Raviv Y, Zhao W Z, Feingold M, Wiggins C H, Granek R
机构信息
Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel.
出版信息
Phys Rev Lett. 2004 Mar 5;92(9):098101. doi: 10.1103/PhysRevLett.92.098101. Epub 2004 Mar 3.
We study the relaxation dynamics of a semiflexible chain by introducing a time-dependent tension. The chain has one of its ends attached to a large bead, and the other end is fixed. We focus on the initial relaxation of the chain that is initially strongly stretched. Using a tension that is self-consistently determined, we obtain the evolution of the end-to-end distance with no free parameters. Our results are in good agreement with single molecule experiments on double stranded DNA.
我们通过引入随时间变化的张力来研究半柔性链的弛豫动力学。该链的一端连接到一个大珠子上，另一端固定。我们关注的是最初被强烈拉伸的链的初始弛豫过程。使用自洽确定的张力，我们得到了端到端距离的演化，且无需自由参数。我们的结果与双链DNA的单分子实验结果高度吻合。
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