发表机构
Indian Institute of Technology (ISM) Dhanbad（印度理工学院（ISMD）丹巴德）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过布朗动力学模拟揭示稀溶液中切向活性聚合物链去胀的通用性，发现其溶胀行为遵循通用特性，建立活性聚合物构象与标度律的联系，为相关生物物理应用提供框架。
AI 中文摘要
采用布朗动力学（BD）算法，在θ溶剂与无热溶剂之间的交叉区域内，对具有切向活性单体珠的线性聚合物链稀溶液进行模拟。随着佩克莱数（Pe，与活性强度成正比）增大，链的构象变化表明链发生去胀，回转半径数据在某一独特Pe值处坍缩为无规行走（RW）统计，且该值与溶剂质量无关。研究发现，交叉区域内活性聚合物相对于其θ态尺寸的溶胀行为，遵循与非活性聚合物相同的通用特性。此外，基于聚合物 blob 理论，我们提出了热 blob 尺寸随单体珠切向活性变化的新标度关系。总体而言，本研究建立了活性聚合物的构象性质与聚合物物理中标度律之间的联系，为研究各类生物物理应用中活性诱导的聚合物分子运动动力学提供了有用框架。
英文摘要
Dilute solutions of linear polymer chains with tangentially active monomeric beads are simulated using a Brownian dynamics (BD) algorithm over a range of solvent quality in the thermal crossover regime between $θ$ and athermal solvents. The conformational changes with increasing P{é}clet number ($Pe$) (which is proportional to the strength of activity) suggest deswelling of the chains resulting in a collapse of the radius of gyration data to a random walk (RW) statistics at a unique value of $Pe$, independent of the solvent quality. The swelling behaviour of active polymers in the crossover regime relative to their size at the $θ$ state is found to follow the same universal characteristics as that of passive polymer chains. Furthermore, based on polymer blob theory we present a novel scaling of the thermal blob size with tangential activity of the monomeric beads which leads to the definition of a renormalized solvent quality parameter for active polymers. Altogether, this work establishes a connection between the configurational properties of active polymers and scaling laws in polymer physics, which provides a useful framework to study the dynamics of activity induced motion of polymeric molecules for various applications in biophysics and other related areas.
