Lattanzi G, Munk T, Frey E
Abteilung Theorie, Hahn-Meitner-Institut, Glienicker Strasse 100, 14109 Berlin, Germany.
Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Feb;69(2 Pt 1):021801. doi: 10.1103/PhysRevE.69.021801. Epub 2004 Feb 9.
We study the statistical mechanics of grafted polymers of arbitrary stiffness in a two-dimensional embedding space with Monte Carlo simulations. The probability distribution function of the free end is found to be highly anisotropic and non-Gaussian for typical semiflexible polymers. The reduced distribution in the transverse direction, a Gaussian in the stiff and flexible limits, shows a double-peak structure at intermediate stiffnesses. We also explore the response to a transverse force applied at the polymer free end. We identify F-Actin as an ideal benchmark for the effects discussed.
我们通过蒙特卡罗模拟研究了二维嵌入空间中任意刚度接枝聚合物的统计力学。对于典型的半柔性聚合物，发现自由端的概率分布函数具有高度各向异性且非高斯分布。横向的约化分布在刚性和柔性极限下为高斯分布，在中等刚度下呈现双峰结构。我们还研究了在聚合物自由端施加横向力时的响应。我们将F-肌动蛋白确定为所讨论效应的理想基准。
