A recoverable self-cleaning surface is studied by coating the nanostructured core–shell microcapsules like a chestnut bur. The microcapsules encapsulate the hydrophobic agent so that when they are broken by mechanical damage, it is released and functions to recover the loss of the self-cleaning performance. The core–shell droplets encapsulating the hydrophobic agent are generated continuously by introducing immiscible fluids into a multi-coaxial microfluidic channel platform and cured by UV irradiation to be polymerized. The control of the size and shell thickness of the microcapsules, and the volume of the hydrophobic agent are examined. Also, the nanostructures on the surface of the microcapsules are obtained by the polyaniline process for additional increase in roughness. The critical breakage forces of the microcapsules are measured for increasing the shell thickness. Finally, the nanostructured microcapsule surface is fabricated on a glass substrate and the water contact angle is measured to determine the self-cleaning performance. Also, its recovery of the self-cleaning performance surface from the mechanical damage is demonstrated. The formation of the recoverable self-cleaning surface by coating enables to apply for a large scale and arbitrary curved surface.

通过涂覆纳米结构的核壳微胶囊（如栗子bur）来研究可恢复的自清洁表面。微囊封装了疏水剂，因此当它们因机械损伤而破裂时，它会被释放并起到恢复自清洁性能损失的作用。通过将不混溶的流体引入多同轴微流体通道平台，不断产生包裹疏水剂的核-壳小滴，并通过紫外线照射使其固化。检查了微囊的大小和壳厚度的控制以及疏水剂的体积。同样，通过聚苯胺工艺获得微胶囊表面上的纳米结构，以进一步增加粗糙度。测量微胶囊的临界断裂力以增加壳的厚度。最后，将纳米结构的微胶囊表面制造在玻璃基板上，并测量水接触角以确定自清洁性能。而且，证明了其从机械损伤中恢复了自清洁性能表面。通过涂覆形成可恢复的自清洁表面使得能够适用于大规模和任意弯曲的表面。