活性粒子在聚合物凝聚物中形成持久渗流网络
Active Particles Imprint Persistent Percolating Networks in Polymer Condensates
AI总结：
研究活性粒子对聚合物凝聚物结构的影响，通过模拟贴纸-间隔聚合物，发现活性促使凝聚物形成渗流网络，去除活性粒子后网络仍持久，揭示活性可写入长寿命结构组织和记忆到流体凝聚物中。
摘要：
流体凝聚物易于交换成分并重新组织，通常会消除结构历史。通过对活性粒子浴中的贴纸-间隔聚合物进行模拟，我们表明活性通过增强链间连通性、抑制链内塌陷以及通过链间缠绕增加拓扑约束，促使凝聚物从紧密液滴转变为跨越系统的渗流网络。即使去除活性粒子后，网络仍持续存在，揭示了一种具有活性诱导拓扑印记的类流体状态。因此，活性可将长寿命的结构组织和记忆写入流体凝聚物中。
英文摘要：
Fluid condensates readily exchange components and reorganize, and in doing so typically erase structural history. Using simulations of sticker-spacer polymers in an active particle bath, we show that activity drives condensates from compact droplets into system-spanning percolated networks by enhancing interchain connectivity, suppressing intrachain collapse, and increasing topological constraints through interchain winding. The network persists after the active particles are removed, despite continued polymer exchange and contact turnover, revealing a fluid-like state with activity-induced topological imprinting. Hence, activity can write long-lived structural organization and memory into fluid condensates.
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