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Ultrastable Super-Hydrophobic Surface with an Ordered Scaly Structure for Decompression and Guiding Liquid Manipulation
ACS Nano ( IF 15.8 ) Pub Date : 2022-10-12 , DOI: 10.1021/acsnano.2c06749
Qiuya Zhang 1, 2 , Xiuhui Bai 1 , Yan Li 1 , Xiaofang Zhang 3 , Dongliang Tian 1, 4 , Lei Jiang 1, 4, 5
ACS Nano ( IF 15.8 ) Pub Date : 2022-10-12 , DOI: 10.1021/acsnano.2c06749
Qiuya Zhang 1, 2 , Xiuhui Bai 1 , Yan Li 1 , Xiaofang Zhang 3 , Dongliang Tian 1, 4 , Lei Jiang 1, 4, 5
Affiliation
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Directional droplet manipulation is very crucial in microfluidics, intelligent liquid management, etc. However, excessive liquid pressure tends to destroy the solid–gas–liquid (SAL) composite interface, creating a highly adhesive surface, which is not conducive to liquid transport. Herein, we propose a strategy to enhance the surface durability, in which the surface cannot withstand liquid pressure only by “blocking” but must instead guide liquid transport for “decompression”. Learning from the water resistance of water strider legs and the drag reduction of shark skin, we present a continuous integrated system to obtain an ultrastable super-hydrophobic surface with a highly ordered scaly structure via a liquid flow-induced alignment method for lossless unidirectional liquid transport. The nonwetting scaly structure can both buffer liquid pressure and drive droplet motion to further reduce the vertical pressure of the liquid. Moreover, droplets can be manipulated unidirectionally using a voice. This work could aid in manufacturing scalable anisotropic micro-nanostructure surfaces, which inspires efforts in realizing lossless continuous liquid control on demand and related microfluidic applications.
中文翻译：
具有有序鳞片结构的超稳定超疏水表面，用于减压和引导液体操作
定向液滴操纵在微流体、智能液体管理等领域非常重要. 然而，过高的液体压力往往会破坏固-气-液（SAL）复合界面，形成高粘性表面，不利于液体传输。在此，我们提出了一种增强表面耐久性的策略，其中表面不能仅通过“阻塞”来承受液体压力，而是必须引导液体输送以进行“减压”。借鉴水黾腿的防水性和鲨鱼皮的减阻，我们提出了一个连续集成系统，通过液体流动诱导对齐方法获得具有高度有序鳞片结构的超稳定超疏水表面，用于无损单向液体传输. 不润湿的鳞片结构既可以缓冲液体压力，又可以驱动液滴运动，进一步降低液体的垂直压力。而且，可以使用声音单向操纵液滴。这项工作可以帮助制造可扩展的各向异性微纳米结构表面，从而激发实现按需无损连续液体控制和相关微流体应用的努力。
更新日期：2022-10-12
中文翻译：
具有有序鳞片结构的超稳定超疏水表面，用于减压和引导液体操作
定向液滴操纵在微流体、智能液体管理等领域非常重要. 然而，过高的液体压力往往会破坏固-气-液（SAL）复合界面，形成高粘性表面，不利于液体传输。在此，我们提出了一种增强表面耐久性的策略，其中表面不能仅通过“阻塞”来承受液体压力，而是必须引导液体输送以进行“减压”。借鉴水黾腿的防水性和鲨鱼皮的减阻，我们提出了一个连续集成系统，通过液体流动诱导对齐方法获得具有高度有序鳞片结构的超稳定超疏水表面，用于无损单向液体传输. 不润湿的鳞片结构既可以缓冲液体压力，又可以驱动液滴运动，进一步降低液体的垂直压力。而且，可以使用声音单向操纵液滴。这项工作可以帮助制造可扩展的各向异性微纳米结构表面，从而激发实现按需无损连续液体控制和相关微流体应用的努力。
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