接枝聚合物的横向涨落
Transverse fluctuations of grafted polymers
摘要：
本文用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。自由端的概率分布函数被发现是高度各向异性和非高斯典型的半柔性聚合物。在横向方向上的约化分布，在刚性和柔性极限下为高斯分布，在中间刚度下显示出双峰结构。我们还探讨了在聚合物自由端施加横向力的响应。我们确定F-肌动蛋白作为讨论的效果的理想基准。
英文摘要：
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.
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