As a result of frequent food waste and environmental pollution, there has been an increasing demand for the development of packaging materials that intrinsically inhibit and reduce likelihood of non-Newtonian liquids adherence. In this work, inspired from ciliary structures on the leg of water strider, the hierarchical conical array was formed by magnetic field control and laser etching without any mask. Due to the tapered geometry of the cones and the multiscale surface roughness of the array, the droplets would bounce many times after impacting with the superhydrophobic surface (SHS) and roll off. By changing the spaces and apex angles of conical microcolumns the SHS has controlled adhesion, superior self-cleaning property and droplets bounce performance for a variety of non-Newtonian viscous liquids. After suffering from various types of damage including repeated tape tearing, finger touch and folding test, the SHS still maintained excellent superhydrophobic property, which may have potential application as all kinds of packaging interface materials. We demonstrate that the excellent droplets bounce behavior of the hierarchical array enables the efficient and robust prevention of food liquids adhesion.

由于频繁的食物浪费和环境污染，对开发包装材料的需求不断增加，这些材料本质上可以抑制和减少非牛顿液体粘附的可能性。在这项工作中，灵感来自水黾腿上的纤毛结构，通过磁场控制和激光蚀刻形成了分层锥形阵列，没有任何掩膜。由于锥体的锥形几何形状和阵列的多尺度表面粗糙度，液滴在与超疏水表面 (SHS) 碰撞后会反弹多次并滚落。通过改变锥形微柱的空间和顶角，SHS 对各种非牛顿粘性液体具有可控的附着力、卓越的自清洁性能和液滴弹跳性能。SHS在经历了多次胶带撕裂、手指触摸、折叠试验等各种损伤后，仍保持着优异的超疏水性能，具有作为各种包装界面材料的潜在应用前景。我们证明了分层阵列出色的液滴弹跳行为能够有效和稳健地防止食物液体粘附。