Smart sensing electronic devices with good transparency, high stretchability, and self-powered sensing characteristics are essential in wearable health monitoring systems. This paper innovatively proposes a stretchable nanocomposite nanogenerator with good transparency that can be conformally attached to the human body to harvest biomechanical energy and monitor physiological signals. The work reports an innovative device that uses sprayed silver nanowires as transparent electrodes and sandwiches a nanocomposite of piezoelectric BaTiO₃ and polydimethylsiloxane as the sensing layer, which exhibits good transparency and mechanical transformability with stretchable, foldable, and twistable properties. The highly flexible nanogenerator affords a good input–output linearity under the vertical force and the sensing ability to detect lateral stretching deformation up to 60% strain under piezoelectric mechanisms. Furthermore, the proposed device can effectively harvest touch energies from the human body as a single-electrode triboelectric nanogenerator. Under periodic contact and separation, a maximum output voltage of 105 V, a current density of 6.5 μA/cm², and a power density of 102 μW/cm² can be achieved, exhibiting a good power generation performance. Owing to the high conformability and excellent sensitivity of the nanogenerator, it can also act as a self-powered wearable sensor attached to different parts of the human body for real-time monitoring of the human physiological signals such as eye blinking, pronunciation, arm movement, and radial artery pulse. The designed nanocomposite nanogenerator shows great potential for use in self-powered e-skins and healthcare monitoring systems.

中文翻译：

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可伸缩的透明纳米复合纳米发电机，用于自供电生理监测

具有良好透明度，高拉伸性和自供电感应特性的智能感应电子设备在可穿戴健康监控系统中至关重要。本文创新性地提出了一种具有良好透明度的可拉伸纳米复合纳米发生器，该发生器可以保形地附着在人体上，以收集生物机械能并监测生理信号。这项工作报告了一种创新的设备，该设备使用喷涂的纳米银丝作为透明电极，并将压电BaTiO ₃的纳米复合材料夹在中间聚二甲基硅氧烷作为传感层，具有良好的透明性和机械变形性，并具有可拉伸，可折叠和可扭曲的特性。高度灵活的纳米发电机在垂直力的作用下具有良好的输入输出线性，并具有在压电机制下检测横向拉伸变形直至60％应变的传感能力。此外，所提出的装置可以作为单电极摩擦电纳米发电机有效地从人体收集触摸能量。在周期性接触和分离下，最大输出电压为105 V，电流密度为6.5μA/ cm ²，功率密度为102μW/ cm ²可以实现，表现出良好的发电性能。由于纳米发生器的高顺应性和出色的灵敏度，它还可以作为自供电的可穿戴式传感器，连接到人体的不同部位，用于实时监测诸如眨眼，发音，手臂运动等人体生理信号。 ，以及pulse动脉脉搏。设计的纳米复合纳米发电机在自供电电子皮肤和医疗保健监控系统中显示出巨大的潜力。