标题： 聚合物形状对胶体-聚合物混合物中耗竭势和拥挤的影响 显示英文标题

标题： Influence of Polymer Shape on Depletion Potentials and Crowding in Colloid-Polymer Mixtures

摘要： 耗竭诱导的胶体在胶体-聚合物混合物中的相互作用范围和强度取决于耗竭剂的尺寸、形状和浓度。 胶体的拥挤反过来会影响聚合物线团的形状，例如生物细胞中的生物聚合物。 通过模拟硬球胶体和随机行走聚合物，将其建模为波动的椭球体，我们计算了耗竭诱导的势能和聚合物形状分布。 将结果与精确的密度泛函理论计算、分子模拟和实验进行比较，我们表明聚合物形状涨落对耗竭和拥挤现象起着重要作用。 显示英文摘要

摘要： Depletion-induced interactions between colloids in colloid-polymer mixtures depend in range and strength on size, shape, and concentration of depletants. Crowding by colloids in turn affects shapes of polymer coils, such as biopolymers in biological cells. By simulating hard-sphere colloids and random-walk polymers, modeled as fluctuating ellipsoids, we compute depletion-induced potentials and polymer shape distributions. Comparing results with exact density-functional theory calculations, molecular simulations, and experiments, we show that polymer shape fluctuations play an important role in depletion and crowding phenomena.