Helical Fiber Strain Sensors Based on Triboelectric Nanogenerators for Self-Powered Human Respiratory Monitoring
Helical Fiber Strain Sensors Based on Triboelectric Nanogenerators for Self-Powered Human Respiratory Monitoring
复制标题
DOI：
10.1021/acsnano.1c09792
复制
发表时间：
2022-02-22
期刊：
影响因子：
17.1
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
--
作者：
Ning, Chuan;Cheng, Renwei;Wang, Zhong Lin
呼吸是一种重要的生命体征，可用于疾病的早期诊断和生理监测。可穿戴式呼吸传感器提供了一个令人兴奋的机会，以实时、非侵入性和舒适的方式监测人类的呼吸行为。其中，纤维状摩擦电纳米发电机(FS-TENG)因其舒适性和高自由度而备受关注。然而，单电极FS-TENG不能响应自身的拉伸应变，而同轴双电极FS-TENG由于结构限制，对应变的敏感性较低。本文研制了一种能够响应微小拉伸应变的螺旋光纤应变传感器(HFSS)。此外，还开发了基于HFSS的智能可穿戴实时呼吸监测系统，可以测量一些关键的呼吸参数，为疾病预防和医疗诊断提供依据。智能报警器可以根据呼吸行为的变化自动呼叫预设的手机求救。本工作为制作基于FS-TENG的高灵敏度应变传感器提供了一种有效的螺旋结构，并开发了可穿戴式自供电实时呼吸监测系统。
Respiration is a major vital sign, which can be used for early illness diagnosis and physiological monitoring. Wearable respiratory sensors present an exciting opportunity to monitor human respiratory behaviors in a real-time, noninvasive, and comfortable way. Among them, fiber-shaped triboelectric nanogenerators (FS-TENGs) are attractive for their comfort and high degree of freedom. However, the single-electrode FS-TENGs cannot respond to their own tensile strains, and the coaxial double-electrode FS-TENGs show low sensitivity to strain due to structural limitations. Here, a type of helical fiber strain sensor (HFSS) is developed, which can respond to tiny tensile strains. In addition, a smart wearable real-time respiratory monitoring system is developed based on the HFSSs, which can measure some key breathing parameters for disease prevention and medical diagnosis. An intelligent alarm can automatically call a preset mobile phone for help in response to respiratory behavior changes. This work provides an effective helical structure for fabricating highly sensitive strain sensors based on FS-TENGs and develops wearable self-powered real-time respiratory monitoring systems.