Abstract The rapid development of wearable electronic devices imposes great challenge to their power supply. Triboelectric nanogenerator (TENG) is a micro-scale energy source that could provide sustainable, renewable, and reliable power. In this paper, we report the first biobased TENGs using human fingernails. We found that fingernails can serve as highly triboelectric material broadening the positive triboelectric material family. The TENG using fingernails and Teflon produce the maximum open-circuit voltage of 87.3 V and a maximum short-circuit current of 3.2 μA. The fabricated TENG has a maximum power density of 122 mW/m2 across a 23 MΩ resistor. We then made a glove based on the fingernail TENG that can harvest and store mechanical energy from hand movements and light up an LED. In addition, we design a low-cost TENG recognition system distinguishing different people by identifying different pulses characters according to their fingernails rub with Teflon. These works show that the fingernail TENGs have a great potential in the fields of human body energy harvest and human feature recognition.

中文翻译：

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一种基于人指甲的摩擦纳米发电机，用于收集和感知身体能量

摘要 可穿戴电子设备的快速发展对其供电提出了巨大的挑战。摩擦纳米发电机 (TENG) 是一种微型能源，可以提供可持续、可再生和可靠的电力。在本文中，我们报告了第一个使用人类指甲的生物基 TENG。我们发现指甲可以作为高摩擦电材料，拓宽了正摩擦电材料家族。使用指甲和 Teflon 的 TENG 产生 87.3 V 的最大开路电压和 3.2 μA 的最大短路电流。制造的 TENG 在 23 MΩ 电阻器上的最大功率密度为 122 mW/m2。然后我们基于手指甲 TENG 制作了一个手套，它可以从手部运动中收集和储存机械能并点亮 LED。此外，我们设计了一个低成本的 TENG 识别系统，通过根据他们的指甲与特氟龙摩擦来识别不同的脉冲字符来区分不同的人。这些工作表明，指甲TENGs在人体能量收集和人体特征识别领域具有巨大的潜力。