Ultraviolet-curable polyurethane acrylate (PUA) materials can be used in a number of important applications spanning from microfluidics, surface patterning to wearable technology. For the first time, the potential of encapsulation of modified zirconia (ZrO₂) nanoparticles is reported in PUA-based hybrid films aimed to facilitate profoundly enhanced hardness and refractive index. By successfully manipulating the interfacial reaction conditions between ZrO₂ nanoparticles and PUA film, the PUA-based nanocomposites exhibit an ultrahigh hardness of 9 and superior refractive index of 1.64 (589.3 nm). The outcomes obtained pave the way for seamless application of nanozirconia/PUA as a potent encapsulating material that provides structurally morphable, water resistant, and optically transparent light emitting diodes toward wearables devices in healthcare.

中文翻译：

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一种高度可控的有机-无机封装纳米复合材料，具有面向可穿戴设备应用的多功能特性

紫外线固化聚氨酯丙烯酸酯 (PUA) 材料可用于许多重要应用，从微流体、表面图案到可穿戴技术。首次报道了改性氧化锆 (ZrO ₂ ) 纳米粒子在基于 PUA 的混合薄膜中的封装潜力，旨在促进显着提高硬度和折射率。通过成功操纵 ZrO ₂之间的界面反应条件纳米粒子和PUA薄膜，基于PUA的纳米复合材料表现出9的超高硬度和1.64（589.3 nm）的优异折射率。获得的结果为纳米氧化锆/PUA 作为一种有效的封装材料的无缝应用铺平了道路，该材料为医疗保健中的可穿戴设备提供了结构可变形、防水和光学透明的发光二极管。