Propagation and relaxation of tension in stiff polymers
Propagation and relaxation of tension in stiff polymers
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DOI：
10.1103/physrevlett.94.077804
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发表时间：
2005-02-25
影响因子：
8.6
通讯作者：
Kroy, K
中科院分区：
文献类型：
--
作者：
Hallatschek, O;Frey, E;Kroy, K
我们提出了一个统一的理论，用于解决刚性聚合物对各种外部扰动（机械激励、流体动力流动、电场、温度猝灭等）的纵向动态响应，这些外部扰动可以表示为环境/边界条件的突然变化。该理论依赖于对蠕虫链中主干应力的非平衡传播和松弛的综合分析。我们基于启发式论证恢复并大幅扩展了先前的结果。指出了新的实验意义。
We present a unified theory for the longitudinal dynamic response of a stiff polymer in solution to various external perturbations (mechanical excitations, hydrodynamic flows, electrical fields, temperature quenches, etc.) that can be represented as sudden changes of ambient/boundary conditions. The theory relies on a comprehensive analysis of the nonequilibrium propagation and relaxation of backbone stresses in a wormlike chain. We recover and substantially extend previous results based on heuristic arguments. New experimental implications are pointed out.