一种具有超疏水表面的管状柔性摩擦纳米发电机，用于人体运动检测。
A Tubular Flexible Triboelectric Nanogenerator with a Superhydrophobic Surface for Human Motion Detecting.
机构信息
Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China.
Key Laboratory for the Physics and Chemistry of Nanodevices, Center for Carbon-Based Electronics, Department of Electronics, Peking University, Beijing 100871, China.
出版信息
Sensors (Basel). 2021 May 23;21(11):3634. doi: 10.3390/s21113634.
The triboelectric nanogenerator (TENG) is a newly arisen technology for mechanical energy harvesting from the environment, such as raindrops, wind, tides, and so on. It has attracted widespread attention in flexible electronics to serve as self-powered sensors and energy-harvesting devices because of its flexibility, durability, adaptability, and multi-functionalities. In this work, we fabricated a tubular flexible triboelectric nanogenerator (TF-TENG) with energy harvesting and human motion monitoring capabilities by employing polydimethylsiloxane (PDMS) as construction material, and fluorinated ethylene propylene (FEP) films coated with Cu as the triboelectric layer and electrode, serving in a free-standing mode. The tube structure has excellent stretchability that can be stretched up to 400%. Modifying the FEP films to obtain a superhydrophobic surface, the output performance of TF-TENG was increased by at least 100% compared to an untreated one. Finally, as the output of TF-TENG is sensitive to swing angle and frequency, demonstration of real-time monitoring of human motion state was realized when a TF-TENG was worn on the wrist.
摩擦纳米发电机（TENG）是一种新兴的技术，可从环境中（如雨滴、风、潮汐等）收集机械能。由于其灵活性、耐用性、适应性和多功能性，它在柔性电子领域引起了广泛关注，可作为自供电传感器和能量收集装置。在这项工作中，我们通过使用聚二甲基硅氧烷（PDMS）作为结构材料，并采用涂覆有铜的氟化乙烯丙烯（FEP）薄膜作为摩擦电层和电极，以自支撑模式制造了具有能量收集和人体运动监测功能的管状柔性摩擦纳米发电机（TF-TENG）。该管结构具有出色的拉伸性，可拉伸至 400%以上。通过对 FEP 薄膜进行改性以获得超疏水表面，与未处理的薄膜相比，TF-TENG 的输出性能至少提高了 100%。最后，由于 TF-TENG 的输出对摆动角度和频率敏感，当在手腕上佩戴 TF-TENG 时，实现了对人体运动状态的实时监测。
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