Soft elasticity of RNA gels and negative Poisson ratio
Soft elasticity of RNA gels and negative Poisson ratio
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DOI：
10.1103/physreve.76.061910
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发表时间：
2007-12-01
影响因子：
2.4
通讯作者：
Bruinsma, Robijn
中科院分区：
文献类型：
--
作者：
Ahsan, Amir;Rudnick, Joseph;Bruinsma, Robijn
我们提出了一个RNA凝胶弹性特性的模型。该模型以负泊松比和形状不稳定性的形式预测了异常弹性性质。异常弹性是由单链RNA的非高斯力-变形关系产生的。双链序列和伴随的单轴弹性体软模所产生的旋转对称性破断，极大地放大了这种效应。
We propose a model for the elastic properties of RNA gels. The model predicts anomalous elastic properties in the form of a negative Poisson ratio and shape instabilities. The anomalous elasticity is generated by the non-Gaussian force-deformation relation of single-stranded RNA. The effect is greatly magnified by broken rotational symmetry produced by double-stranded sequences and the concomitant soft modes of uniaxial elastomers.