Solenoids and plectonemes in stretched and twisted elastomeric filaments

被引：40

作者：

Ghatak, A ^{[1
]}

Mahadevan, L ^{[1
]}

机构：

[1] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.95.057801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the behavior of a naturally straight highly extensible elastic filament subjected to large extensional and twisting strains. We find that two different phases can coexist for a range of parameter values: the plectoneme and the solenoid. A simple theory based on a neo-Hookean model for the material of the filament and accounting for the slender geometry suffices to explain these observations, and leads to a phase diagram that is consistent with observations. Extension and relaxation experiments on these phases show the presence of large hysteresis loops and sawtoothlike force-displacement curves which are different for the plectoneme and the solenoid.

引用

页数：4

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