Despite significant progresses in development of superhydrohpobic coatings, their ability to resist small water droplets, which can exert large Laplace pressure on surface, remain limited. Here, a new strategy by self‐assembly of a monolayer of chained silica nanoparticles, forming an ultrathin film (<100 nm) with two‐tiered nanoasperity is presented. The resulting coating shows ultrahigh water repellency and high visible transparency. It can also repel low surface energy liquids, such as alcohol/water mixtures (surface tension ≥42 mN m⁻¹). Importantly, the superhydrophobic coating demonstrates high resistance to impact pressure (at least 250 Pa) from water droplets dropped from 3.3 m height and internal Laplace pressure of 15 kPa from evaporated water droplets. Furthermore, the CNP coating remains to be superhydrophobic with condensed water droplets radius as small as 0.3 mm even after condensation for 6 h. In comparison, all of these properties are not possible from the assembly of spherical nanoparticles.

中文翻译：

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链状纳米颗粒单层组件的高度坚固，耐压超疏水涂层

尽管超疏水涂层的开发取得了重大进展，但它们抵抗小水滴的能力仍然有限，这些小水滴会在表面施加较大的拉普拉斯压力。在此，提出了一种通过自组装链状二氧化硅纳米颗粒的单层，形成具有两层纳米粗糙性的超薄膜（< 100 nm）的新策略。所得涂层显示出超高的疏水性和高的可见透明性。它还可以排斥低表面能的液体，例如酒精/水混合物（表面张力≥42 mN m ^-1）。重要的是，超疏水性涂层表现出对从3.3 m高度掉落的水滴的高耐冲击压力（至少250 Pa）的抵抗力和从蒸发掉的水滴产生的15 kPa的内部拉普拉斯压力。此外，CNP涂层仍保持超疏水性，即使冷凝6小时后，冷凝水滴的半径仍小至0.3 mm。相比之下，球形纳米颗粒的组装不可能实现所有这些特性。