The Greta oto butterfly has transparent wings with extraordinary omnidirectional anti-reflection behavior, owing to unusual nanostructures with random height and pitch/space distribution on its wing surface. The beauty and efficacy of such nanostructures are proven designs but difficult to reproduce en masse. Here, we establish a low-cost bottom-up approach by simply stacking monolayer-aligned agitation-assisted deposition of silver nanowire (AgNW) meshes followed by deposition of various overcoats. Such AgNW meshes provide the template to grow nanostructures, imitating those on the Greta oto’s wings that consist of randomly situated nanocones with controllable mean pitches and heights. The resulting nanostructure enhances anti-reflections in both SiO₂/AgNW and VO₂/AgNW systems, which showed reduced omnidirectional reflectance up to 33% and 70%, respectively. Furthermore, the VO₂/AgNW system exhibits enhanced luminous and infrared transmittance without sacrificing solar modulation. Our robust bottom-up approach provides a simpler alternate non-lithographic way to economically produce controlled biomimetic anti-reflective nanostructured coatings.

的葛丽泰OTO蝴蝶具有非凡的全向防反射行为透明的翅膀，由于在其机翼表面随机高度和螺距/空间分布不寻常的纳米结构。这种纳米结构的美丽和功效是经过验证的设计，但很难大规模复制。在这里，我们通过简单地堆叠单层排列的搅拌辅助沉积银纳米线 (AgNW) 网格，然后沉积各种外涂层，建立了一种低成本的自下而上的方法。这种 AgNW 网格提供了生长纳米结构的模板，模仿Greta oto翅膀上的结构，这些结构由随机排列的纳米锥组成，具有可控的平均节距和高度。由此产生的纳米结构增强了 SiO2 中的抗反射₂ /AgNW 和 VO ₂ /AgNW 系统，其全向反射率分别降低了 33% 和 70%。此外，VO ₂ /AgNW 系统在不牺牲太阳能调制的情况下表现出增强的光和红外透射率。我们强大的自下而上的方法提供了一种更简单的替代非光刻方式，可以经济地生产受控的仿生抗反射纳米结构涂层。