General equilibrium shape equations of polymer chains
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- General equilibrium shape equations of polymer chains
- 发表刊物：
- Phys. Rev. E
- 摘要：
- The general equilibrium shape equations of polymer chains are analytically derived in this paper. This provides a unified description for many models, such as the well-known wormlike chain (WLC) model, the wormlike rod chain (WLRC) model, carbon nanotubes, and so on. Using the WLC model, we find that the pitch-to-radius ratio of coils, 4.443, agrees with Z-DNA, and the pitch-to-radius ratio from WLRC agrees with the data of B-DNA qualitatively. Using the general shape equations, we discuss a chiral model in which the solutions of straight, helical, and circular biopolymers are given, respectively. We also find that the model suggested by Helfrich [Langmuir 7, 567 (1991)] is very appropriate to describe B-DNA (or other biopolymers) if we choose the four phenomenological parameters as A=50 nm, C=60 mn(2), alpha=40 mn(3), and beta=50 nm(2).
- 合写作者：
- S. L. Zhang, X. J. Zuo,M. G. Xia, et al.
- 卷号：
- 70
- 页面范围：
- 051902
- 是否译文：
- 否
- 发表时间：
- 2004-11-10