Rough capillary rise
Rough capillary rise
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DOI：
10.1038/s42005-023-01160-w
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发表时间：
2023-03
影响因子：
5.5
通讯作者：
Jack R. Panter;A. Konicek;M. King;A. Jusufi;M. Yeganeh;H. Kusumaatmaja
中科院分区：
文献类型：
--
作者：
Jack R. Panter;A. Konicek;M. King;A. Jusufi;M. Yeganeh;H. Kusumaatmaja
粗糙结构中的毛细上升是一种湿润现象，对于生物有机体的生存、建筑环境的恶化以及从3D微流体到碳捕获等众多创新的表现都是至关重要的。在这里，为了准确地预测毛细管粗上升，我们必须耦合两种润湿现象：毛细上升和半芯吸湿。实验、模拟和理论表明，这种耦合如何挑战我们对润湿和粗糙度的传统理解和直觉。首先，半芯吸水的临界接触角依赖于分离，因此即使是高度润湿的液体，半芯吸水也可能消失。其次，完全润湿液体的上升高度在光滑系统和粗糙系统之间可能不同，即使在相同的0∘接触角下也是如此。最后，与光滑体系相比，粗糙体系中升高的液体体积显著增加。为了定量准确地解释和预测所有的上升高度和体积，我们提出了适用于一般粗糙度、液体和表面润湿性的双上升模型。
Capillary rise within rough structures is a wetting phenomenon that is fundamental to survival in biological organisms, deterioration of our built environment, and performance of numerous innovations, from 3D microfluidics to carbon capture. Here, to accurately predict rough capillary rise, we must couple two wetting phenomena: capillary rise and hemiwicking. Experiments, simulations, and theory demonstrate how this coupling challenges our conventional understanding and intuitions of wetting and roughness. Firstly, the critical contact angle for hemiwicking becomes separation-dependent so that hemiwicking can vanish for even highly wetting liquids. Secondly, the rise heights for perfectly wetting liquids can differ between smooth and rough systems, even with the same 0∘contact angle. Finally, the raised liquid volumes are substantially increased in rough compared to smooth systems. To explain and predict all rise heights and volumes with quantitative accuracy, we present the Dual-Rise model that is valid for general roughness, liquids, and surface wettabilities.