The integration of a display function with wearable interactive sensors offers a promising way to synchronously detect physiological signals and visualize pressure/stimuli. However, combining these two functions in a strain sensor textile is a longstanding challenge due to the physical separation of sensors and display units. Here, a water-stable luminescent perovskite hydrogel (emission band approximately 25 nm) is constructed by blending as-prepared CsPbBr₃@PbBr(OH) with stretchable polyacrylamide (PAM) hydrogels. The facile introduction of CsPbBr₃@PbBr(OH) endows the hydrogels with excellent optical properties and a high mechanical strength of 51.3 kPa at a fracture strain of 740%. Interestingly, the resulting hydrogels retain bright green fluorescence under conditions including water, ultraviolet light, and extensive stretching (> 700%). As a proof-of-concept, a novel wearable stretchable strain sensor textile based on these hydrogels is developed, and it displays visual-digital synergetic strain detection ability. It can perceive various motions on the human body in real time with electronic output signals from changes in resistance and simultaneously readable optical output signals, whether on land or underwater. This work provides a meaningful guide to rationally design perovskite hydrogels and accelerates the development of wearable visual-digital strain sensor textiles.

Graphical Abstract

中文翻译：

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用于视觉数字可穿戴应变传感器纺织品的可拉伸发光钙钛矿聚合物水凝胶

显示功能与可穿戴交互式传感器的集成提供了一种有前途的方法来同步检测生理信号和可视化压力/刺激。然而，由于传感器和显示单元的物理分离，将这两种功能结合在应变传感器纺织品中是一项长期挑战。_{在这里，通过将制备的 CsPbBr 3} @PbBr(OH) 与可拉伸聚丙烯酰胺 (PAM) 水凝胶混合，构建了一种水稳定的发光钙钛矿水凝胶（发射带约 25 nm） 。_{CsPbBr 3}的简单介绍@PbBr(OH) 赋予水凝胶优异的光学性能和 51.3 kPa 的高机械强度，断裂应变为 740%。有趣的是，所得水凝胶在包括水、紫外线和广泛拉伸 (> 700%) 的条件下仍保留明亮的绿色荧光。作为概念验证，开发了一种基于这些水凝胶的新型可穿戴可拉伸应变传感器纺织品，并显示出视觉数字协同应变检测能力。无论是在陆地还是在水下，它都可以通过电阻变化的电子输出信号和同时可读的光学输出信号实时感知人体的各种运动。这项工作为合理设计钙钛矿水凝胶提供了有意义的指导，并加速了可穿戴视觉数字应变传感器纺织品的开发。

图形概要