Abstract Biomimetic inspiration from the moth-eye structure has led to many studies combining nanoimprint lithography (NIL) to realize low cost and large area anti-reflection (AR) coatings. However, the scope of application is severely limited by poor mechanical performance due to the intrinsic properties of the coating materials and the nanosized patterns. In this work, we demonstrate a moth-eye structured epoxy-siloxane molecular hybrid (ME-ESMH) fabricated using single UV-based NIL (UV-NIL) on a colorless polyimide (CPI), to be utilized as a flexible cover window (FCW) for foldable displays. Low reflection, a superhydrophobicity and good inward foldability were achieved, together with excellent thermal and chemical resistance. Furthermore, in situ uniaxial compression tests revealed that the fabricated structure can be elastically deformed and nearly restored to its original shape even after a large degree of compression. Our findings provide an easy-to-integrate solution for flexible hard coatings with superhydrophobic and AR properties, applicable to foldable optoelectronics.

中文翻译：

---

用于可折叠显示器的具有机械超弹性蛾眼结构的超疏水、抗反射、柔性硬涂层

摘要 来自蛾眼结构的仿生启发导致了许多结合纳米压印光刻 (NIL) 来实现低成本和大面积增透 (AR) 涂层的研究。然而，由于涂层材料的固有特性和纳米尺寸的图案，其应用范围受到机械性能差的严重限制。在这项工作中，我们展示了在无色聚酰亚胺 (CPI) 上使用单一基于紫外线的 NIL (UV-NIL) 制造的蛾眼结构的环氧-硅氧烷分子杂化物 (ME-ESMH)，用作柔性覆盖窗。 FCW) 用于可折叠显示器。实现了低反射、超疏水性和良好的向内折叠性，以及优异的耐热性和耐化学性。此外，原位单轴压缩试验表明，即使经过很大程度的压缩，制造的结构也可以弹性变形并几乎恢复到原来的形状。我们的研究结果为具有超疏水性和 AR 特性的柔性硬涂层提供了一种易于集成的解决方案，适用于可折叠光电子学。