Stretching a heteropolymer

被引：55

作者：

Bensimon, D

Dohmi, D

Mezard, M

机构：

[1] Ecole Normale Super, CNRS, Phys Stat Lab, F-75231 Paris 05, France

[2] Univ Paris 06, Ecole Normale Super, Phys Stat Lab, F-75231 Paris, France

[3] Univ Paris 11, Ecole Normale Super, Phys Stat Lab, F-75231 Paris 05, France

[4] Weizmann Inst Sci, Dept Complex Syst, IL-76100 Rehovot, Israel

[5] Univ Rabat, Dept Phys, Rabat, Morocco

[6] Ecole Normale Super, CNRS, Phys Theor Lab, F-75231 Paris 05, France

[7] Univ Paris 11, Ecole Normale Super, Phys Theor Lab, F-75231 Paris 05, France

来源：

EUROPHYSICS LETTERS | 1998年 / 42卷 / 01期

关键词：

D O I：

10.1209/epl/i1998-00558-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the influence of some quenched disorder in the sequence of monomers on the entropic elasticity of long polymeric chains. Starting from the Kratky-Porod model, we show numerically that some randomness in the favoured angles between successive segments induces a change in the elongation vs. force characteristics, and this change can be well described by a sample renormalisation of the elastic constant. The effective coupling constant is computed by an analytic study of the low-force regime.

引用

页码：97 / 102

页数：6

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