Well-defined porous membranes for robust omniphobic surfaces via microfluidic emulsion templating.,Nature Communications

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Well-defined porous membranes for robust omniphobic surfaces via microfluidic emulsion templating.
Nature Communications ( IF 14.7 ) Pub Date : 2017-06-12 , DOI: 10.1038/ncomms15823
Pingan Zhu _{1,

2} , Tiantian Kong _{2,

3} , Xin Tang _{1,

2} , Liqiu Wang _{1,

2}

Affiliation

Durability is a long-standing challenge in designing liquid-repellent surfaces. A high-performance omniphobic surface must robustly repel liquids, while maintaining mechanical/chemical stability. However, liquid repellency and mechanical durability are generally mutually exclusive properties for many omniphobic surfaces-improving one performance inevitably results in decreased performance in another. Here we report well-defined porous membranes for durable omniphobic surfaces inspired by the springtail cuticle. The omniphobicity is shown via an amphiphilic material micro-textured with re-entrant surface morphology; the mechanical durability arises from the interconnected microstructures. The innovative fabrication method-termed microfluidic emulsion templating-is facile, cost-effective, scalable and can precisely engineer the structural topographies. The robust omniphobic surface is expected to open up new avenues for diverse applications due to its mechanical and chemical robustness, transparency, reversible Cassie-Wenzel transition, transferability, flexibility and stretchability.

中文翻译：

通过微流体乳液模板形成清晰的多孔膜，用于坚固的全疏水表面。

耐久性是设计防水表面的一个长期挑战。高性能全疏表面必须能够有效排斥液体，同时保持机械/化学稳定性。然而，对于许多全疏表面来说，拒液性和机械耐久性通常是相互排斥的特性——提高一种性能不可避免地会导致另一种性能的下降。在这里，我们报告了受跳尾角质层启发的用于耐用全憎表面的明确多孔膜。全疏性通过具有凹入表面形态的微观纹理的两亲性材料表现出来；机械耐久性来自于相互连接的微观结构。这种创新的制造方法被称为微流体乳液模板，它简单、经济、可扩展，并且可以精确地设计结构拓扑。由于其机械和化学稳定性、透明度、可逆Cassie-Wenzel转变、可转移性、灵活性和可拉伸性，坚固的全疏表面预计将为多种应用开辟新途径。

更新日期：2017-06-13

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