论文标题
通过手性和非手续活性颗粒通过纳米孔易位的聚合物易位
Rectification of polymer translocation through nanopores by chiral and nonchiral active particles
论文作者
论文摘要
我们使用langevin Dynamics模拟在主动噪声和空间排除的影响下，通过膜孔通过膜孔进行了柔性聚合物链的无偏易位。通过在膜的一个或两侧引入非手性和手性活性颗粒来结合活性噪声。由于颗粒活性引起的有效拉力，聚合物将聚合物转移到孔的任一侧，并且由于聚合物和活性颗粒之间的空间排斥而受到有效推动的阻碍。由于这些有效力量之间的竞争，我们发现了两个整流（{\ em cis} -to - {\ em trans}和{\ em trans} -to- {\ em cis}）状态之间的过渡。通过易位时间的急剧增加来确定这种过渡。它取决于系统参数，例如粒子活性，区域分数和手性，其效果在这项工作中得到了探索。
We study unbiased translocation of a flexible polymer chain through a membrane pore under the influence of active noise and steric exclusion using Langevin dynamics simulations. The active noise is incorporated by introducing nonchiral and chiral active particles on one or both sides of the membrane. Translocation of the polymer into either side of the pore is assisted by an effective pulling due to particle activity and is hindered by an effective pushing due to steric repulsions between the polymer and active particles. As a result of the competition between these effective forces, we find a transition between two rectified ({\em cis}-to-{\em trans} and {\em trans}-to-{\em cis}) states. This transition is identified by a sharp increase of translocation time. It varies depending on the system parameters such as particle activity, area fraction and chirality whose effects are explored in this work.
