Effective forces between active polymers
Effective forces between active polymers
复制标题
活性聚合物之间的有效力
DOI：
10.1103/physreve.105.034503
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发表时间：
2022
影响因子：
2.4
通讯作者：
Cacciuto, A.
中科院分区：
文献类型：
--
作者：
Gandikota, M. C.;Cacciuto, A.
表征两种完全柔性自回避聚合物之间的相互作用是聚合物物理学中最经典和最重要的问题之一。在本文中，我们测量了这些相互作用在活跃波动的存在。我们使用该领域最流行的两种模型将活性引入到问题中，其中一种模型将活性有效地嵌入到单体的动力学中，另一种模型将被动聚合物在活性粒子的明确浴中波动。我们建立了将活性聚合物之间的相互作用映射为经典被动问题的条件。我们观察到，活性浴可以驱动聚合物之间强烈的吸引相互作用的发展，并且在强制一定程度的重叠后，它们聚集在一起形成单个双链单元。一个相图跟踪这种变化的构象行为也被报道。
The characterization of the interactions between two fully flexible self-avoiding polymers is one of the classic and most important problems in polymer physics. In this paper we measure these interactions in the presence of active fluctuations. We introduce activity into the problem using two of the most popular models in this field, one where activity is effectively embedded into the monomers' dynamics, and the other where passive polymers fluctuate in an explicit bath of active particles. We establish the conditions under which the interaction between active polymers can be mapped into the classical passive problem. We observe that the active bath can drive the development of strong attractive interactions between the polymers and that, upon enforcing a significant degree of overlap, they come together to form a single double-stranded unit. A phase diagram tracing this change in conformational behavior is also reported.