In this work, a novel method to fabricate transparent nanomesh-structured hydrophobic (TNH) films was developed to improve the optical properties by minimizing light scattering. First, a nickel nanomesh mold was prepared using phase-shifting edge lithography. Subsequently, the TNH film was fabricated by nanoimprinting an ultraviolet-curable fluorinated polyurethane resist. The resist had a water contact angle of 93.2° when coated on a flat polyethylene terephthalate film with no pattern. Micromesh- and nanomesh-shaped patterns were applied to improve the hydrophobic property of the film. It was noted that the use of a micromesh-patterned film could improve the water contact angle to approximately 130°. Furthermore, the TNH films exhibited a water contact angle of more than 150° while maintaining a light transmittance of more than 90%. The TNH films have great potential for applications such as self-cleaning optical devices and anti-icing windows.

中文翻译：

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通过纳米压印可紫外固化的氟化聚氨酯丙烯酸酯制备透明的纳米网状疏水膜

在这项工作中，开发了一种制造透明的纳米网状疏水（TNH）薄膜的新方法，以通过最小化光散射来改善光学性能。首先，使用相移边缘光刻法制备镍纳米网模具。随后，通过纳米压印可紫外线固化的氟化聚氨酯抗蚀剂来制造TNH膜。当在没有图案的平坦聚对苯二甲酸乙二醇酯膜上涂布时，抗蚀剂的水接触角为93.2°。施加了微网状和纳米网状的图案以改善膜的疏水性。注意到使用微孔图案的膜可以将水接触角提高到大约130°。此外，TNH膜表现出大于150°的水接触角，同时保持大于90％的透光率。