CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China.
Center on Nanoenergy Research, School of Physical Science & Technology, Guangxi University, Nanning, China.
Nat Commun. 2021 May 19;12(1):2950. doi: 10.1038/s41467-021-23207-8.
Human motions, such as joint/spinal bending or stretching, often contain information that is useful for orthopedic/neural disease diagnosis, rehabilitation, and prevention. Here, we show a badge-reel-like stretch sensing device with a grating-structured triboelectric nanogenerator exhibiting a stretching sensitivity of 8 V mm, a minimum resolution of 0.6 mm, a low hysteresis, and a high durability (over 120 thousand cycles). Experimental and theoretical investigations are performed to define the key features of the device. Studies from human natural daily activities and exercise demonstrate the functionality of the sensor for real-time recording of knee/arm bending, neck/waist twisting, and so on. We also used the device in a spinal laboratory, monitoring human subjects' spine motions, and validated the measurements using the commercial inclinometer and hunchback instrument. We anticipate that the lightweight, precise and durable stretch sensor applied to spinal monitoring could help mitigate the risk of long-term abnormal postural habits induced diseases.
人体运动，如关节/脊柱弯曲或伸展，通常包含对骨科/神经疾病诊断、康复和预防有用的信息。在这里，我们展示了一种类似于徽章卷轴的拉伸感应装置，该装置具有光栅结构的摩擦纳米发电机，具有 8V mm 的拉伸灵敏度、0.6mm 的最小分辨率、低滞后和高耐用性（超过 12 万次循环）。进行了实验和理论研究来定义该设备的关键特征。来自人类自然日常活动和运动的研究证明了该传感器用于实时记录膝盖/手臂弯曲、颈部/腰部扭曲等功能。我们还在脊柱实验室中使用该设备，监测人体的脊柱运动，并使用商业测斜仪和驼背仪验证测量结果。我们预计，应用于脊柱监测的这种重量轻、精确和耐用的拉伸传感器可以帮助降低长期异常姿势习惯引起疾病的风险。
