Mu Yifeng, Feng Rou, Gong Qibei, Liu Yuxuan, Jiang Xijun, Hu Youfan
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, Frontiers Science Center for Nano-Optoelectronics, Department of Electronics, Peking University, Beijing 100871, China.
Materials (Basel). 2021 May 30;14(11):2962. doi: 10.3390/ma14112962.
A wearable electronic system constructed with multiple sensors with different functions to obtain multidimensional information is essential for making accurate assessments of a person's condition, which is especially beneficial for applications in the areas of health monitoring, clinical diagnosis, and therapy. In this work, using polyimide films as substrates and Pt as the constituent material of serpentine structures, flexible temperature and angle sensors were designed that can be attached to the surface of an object or the human body for monitoring purposes. In these sensors, changes in temperature and bending angle are converted into variations in resistance through thermal resistance and strain effects with a sensitivity of 0.00204/°C for temperatures in the range of 25 to 100 °C and a sensitivity of 0.00015/° for bending angles in the range of 0° to 150°. With an appropriate layout design, two sensors were integrated to measure temperature and bending angles simultaneously in order to obtain decoupled, compensated, and more accurate information of temperature and angle. Finally, the system was tested by being attached to the surface of a knee joint, demonstrating its application potential in disease diagnosis, such as in arthritis assessment.
构建一个由具有不同功能的多个传感器组成的可穿戴电子系统，以获取多维信息，对于准确评估人的健康状况至关重要，这对健康监测、临床诊断和治疗等领域的应用尤其有益。在这项工作中，以聚酰亚胺薄膜为基底，以铂作为蛇形结构的组成材料，设计了可附着在物体表面或人体上用于监测目的的柔性温度传感器和角度传感器。在这些传感器中，温度和弯曲角度的变化通过热阻和应变效应转换为电阻变化，对于25至100°C范围内的温度，灵敏度为0.00204/°C，对于0°至150°范围内的弯曲角度，灵敏度为0.00015/°。通过适当的布局设计，将两个传感器集成在一起以同时测量温度和弯曲角度，从而获得解耦、补偿且更准确的温度和角度信息。最后，通过将该系统附着在膝关节表面进行测试，证明了其在疾病诊断中的应用潜力，如关节炎评估。
