Minggang Xia
- Professor
- Supervisor of Doctorate Candidates
- Supervisor of Master's Candidates
- Name (English):Minggang Xia
- E-Mail:
- Date of Employment:2002-04-09
- Education Level:With Certificate of Graduation for Doctorate Study
- Business Address:仲英楼B812
- Degree:Doctor
- Professional Title:Professor
- Status:Employed
- Alma Mater:西安交通大学
- College:School of Physics
- Discipline:Physics
- Papers
General equilibrium shape equations of polymer chains
Release Time:2025-04-30 Hits:
- Date:2025-04-30
- Title of Paper:General equilibrium shape equations of polymer chains
- Journal:Phys. Rev. E
- Summary: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).
- Co-author:S. L. Zhang, X. J. Zuo,M. G. Xia, et al.
- Volume:70
- Page Number:051902
- Translation or Not:No
- Date of Publication:2004-11-10