Lossless, Passive Transportation of Low Surface Tension Liquids Induced by Patterned Omniphobic Liquidlike Polymer Brushes,Advanced Functional Materials

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Lossless, Passive Transportation of Low Surface Tension Liquids Induced by Patterned Omniphobic Liquidlike Polymer Brushes
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2021-10-03 , DOI: 10.1002/adfm.202107465
Mohammad Soltani _{1,

2} , Kevin Golovin _{1,

2}

Affiliation

Surfaces enabling directional liquid transportation are of great interest for a wide range of applications such as water collection, microfluidics, and heat transfer systems. Surfaces capable of lossless, long-range passive transportation of low surface tension (LST) liquids using wettability patterned, liquidlike coatings with minimal contact angle hysteresis are reported. Lossless LST droplet travel distances over 150 mm are achieved, enabled by a two-phase transportation mechanism: morphological transformation from a bulge to a channel shape, followed by directional transportation along the asymmetrical wedge-shaped channel. The developed surfaces can split, merge, and precisely transport various low-surface tension liquids, including alcohols, alkanes, and solvents. The developed transportation strategy can also enhance LST liquid dropwise condensation through continuous removal of the condensate, even on horizontally positioned surfaces without the assistance of gravity.

中文翻译：

由图案化全疏液状聚合物刷引起的低表面张力液体的无损、被动运输

能够定向液体运输的表面在广泛的应用中具有重要意义，例如集水、微流体和传热系统。据报道，使用具有最小接触角滞后的润湿性图案化、类液体涂层能够无损、远程被动传输低表面张力 (LST) 液体的表面。通过两相传输机制实现了超过 150 毫米的无损 LST 液滴行进距离：从凸起到通道形状的形态转换，然后沿着不对称的楔形通道定向传输。开发的表面可以分裂、合并和精确传输各种低表面张力液体，包括醇类、烷烃和溶剂。

更新日期：2021-10-03

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