Rational Design of the Nanostructure Features on Superhydrophobic Surfaces for Enhanced Dynamic Water Repellency
Rational Design of the Nanostructure Features on Superhydrophobic Surfaces for Enhanced Dynamic Water Repellency
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DOI：
10.1021/acssuschemeng.8b01200
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发表时间：
2018-07
影响因子：
8.4
通讯作者：
Yizhou Shen;J. Tao;Zhong Chen;Chunling Zhu;Guanyu Wang;Haifeng Chen;Senyun Liu
中科院分区：
文献类型：
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作者：
Yizhou Shen;J. Tao;Zhong Chen;Chunling Zhu;Guanyu Wang;Haifeng Chen;Senyun Liu
具有不同程度液体粘附的仿生表面由于其学术意义和潜在的工业应用而受到许多研究者的强烈关注。本研究旨在探讨微纳结构特征驱动的冲击液滴的弹跳动力学与静态液体粘附之间的关系。本文在TiO2纳米材料的基础上制备了纳米管、纳米网和纳米线三种类型的超疏水表面，这些表面都具有强大的超疏水性，并且具有较低的液体粘附性，滑动角在7.5°~ 3°之间。随后，对撞击液滴在这些表面上的弹跳动力学进行了评估，并显示出不同弹跳能力的显著差异。这可以解释为，由于动压力的存在，与纳米管结构表面的静态液滴相比，冲击液滴诱导了更高的毛细管诱导黏附力相互作用。
Biomimetic surfaces with various extents of liquid adhesion intensely appeal to many researchers due to their academic significance and potential industry applications. The present work aims to discuss the relationship between bouncing dynamics of impact droplets and static liquid adhesion driven by micro/-nanostructure features. Here, we fabricated three types of nanostructure (nanotube, nanomesh, and nanowire) superhydrophobic surfaces based on the TiO2 nanomaterials, and all of these resultant surfaces were endowed with the robust superhydrophobicity, and showed the low liquid adhesion with the sliding angles from 7.5° to 3°. Subsequently, the bouncing dynamics of impact droplets on these surfaces were evaluated and showed remarkable distinctions with different capacity to rebound off. This is explained in that the impact droplet has induced a higher capillary-induced adhesion force interaction as compared to the static droplet on the nanotube structure surface due to the existence of dynamic pressure ...