Abstract：
Biological signaling correlates with the interrelation between ion and nanofluidic transportation pathways. However, artificial embodies with reconfigurable ion-fluid transport interaction aspects remain largely elusive. Herein, we unveiled an intimate interplay between nanopore-driven advancing flow and ion carriage for the spontaneous imbibition of aqueous solutions at the nanoporous thin film level. Ionic factors dominate transport phenomena processing and integration (ions influence fluid motion, which in turn governs the self-regulated ion traveling). We show an ion-induced translation effect that finely converts a chemical input, the nature of ions, into a related fluidic output: modulation of the extent of imbibition. We further find complex imbibition dynamics induced by the ion type and population. We peculiarly pinpoint a stop-and-go effective transport process with a programmable delay time triggered by selective guest-host interactions. The ion-fluid transport interplay is captured by a simple model that considers the counterbalance between the capillary infiltration and solution concentration, owing to water loss at the nanoporous film-air interface. Our results demonstrate that nanopore networks present fresh scenarios for understanding and controlling autonomous macroscopic liquid locomotion and offer a distinctive working principle for smart ion operation.
摘要：
生物信号与离子和纳米流体运输途径之间的相互关系相关。然而,具有可重构离子-流体传输相互作用方面的人工体现在很大程度上仍然难以捉摸。在这里，我们揭示了纳米孔驱动的前进流和离子运输之间的密切相互作用，以在纳米多孔薄膜水平上自发吸收水溶液。离子因素主导运输现象处理和整合(离子影响流体运动，反过来又控制着自我调节的离子行进)。我们展示了离子诱导的翻译效应，可以很好地转换化学输入，离子的性质,转化为相关的流体输出：吸入程度的调节。我们进一步发现了由离子类型和种群引起的复杂的渗吸动力学。我们特别确定了一个走走停停的有效传输过程，并具有由选择性宾主交互触发的可编程延迟时间。离子-流体传输相互作用通过一个简单的模型来捕获，该模型考虑了毛细管渗透和溶液浓度之间的平衡，由于纳米多孔膜-空气界面的失水。我们的结果表明，纳米孔网络为理解和控制自主宏观液体运动提供了新的方案，并为智能离子操作提供了独特的工作原理。
