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A plantar wearable pressure sensor based on hybrid lead zirconate-titanate/microfibrillated cellulose piezoelectric composite films for human health monitoring
Lab on a Chip ( IF 6.1 ) Pub Date : 2022-05-02 , DOI: 10.1039/d2lc00051b Yanfang Guan 1, 2 , Mingyang Bai 1 , Qiuliang Li 1 , Wujie Li 1 , Guangyu Liu 1 , Chunbo Liu 1 , Yu Chen 3 , Yang Lin 4 , Yanbo Hui 1 , Ronghan Wei 5
Lab on a Chip ( IF 6.1 ) Pub Date : 2022-05-02 , DOI: 10.1039/d2lc00051b Yanfang Guan 1, 2 , Mingyang Bai 1 , Qiuliang Li 1 , Wujie Li 1 , Guangyu Liu 1 , Chunbo Liu 1 , Yu Chen 3 , Yang Lin 4 , Yanbo Hui 1 , Ronghan Wei 5
Affiliation
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Flexible and wearable electronic sensors hold great promise for improving the quality of life, especially in the field of healthcare monitoring, owing to their low cost, flexibility, high electromechanical coupling performance, high sensitivity, and biocompatibility. To achieve high piezoelectric performance similar to that of rigid materials while satisfying the flexible requirements for wearable sensors, we propose novel hybrid films based on lead zirconate titanate powder and microfibrillated cellulose (PZT/MFC) for plantar pressure measurements. The flexible films made using the polarization process are tested. It was found that the maximum piezoelectric coefficient was 31 pC N−1 and the maximum tensile force of the flexible films was 26 N. A wide range of bending angles between 15° and 180° proves the flexibility capability of the films. In addition, the charge density shows a proportional relation with the applied mechanical force, and it could sense stress of 1 kPa. Finally, plantar pressure sensors are arranged and packaged with a film array followed by connection with the detection module. Then, the pressure curves of each point on the plantar are obtained. Through analysis of the curve, several parameters of human body motions that are important in the rehabilitation of diabetic patients and the detection of sports injury can be performed, including stride frequency, length and speed. Overall, the proposed PZT/MFC wearable plantar pressure sensor has broad application prospects in the field of sports injury detection and medical rehabilitation training.
中文翻译：
基于混合锆钛酸铅/微纤化纤维素压电复合薄膜的足底可穿戴压力传感器用于人体健康监测
柔性和可穿戴电子传感器由于其低成本、灵活性、高机电耦合性能、高灵敏度和生物相容性，为改善生活质量，特别是在医疗保健监测领域带来了巨大希望。为了实现类似于刚性材料的高压电性能，同时满足可穿戴传感器的柔性要求，我们提出了基于锆钛酸铅粉末和微纤化纤维素 (PZT/MFC) 的新型混合薄膜，用于足底压力测量。测试了使用偏振工艺制成的柔性薄膜。发现最大压电系数为31 pC N -1柔性薄膜的最大拉伸力为26 N。15°和180°之间的广泛弯曲角度证明了薄膜的柔性能力。此外，电荷密度与所施加的机械力呈正比关系，它可以感应到 1 kPa 的应力。最后，将足底压力传感器排列并封装成薄膜阵列，然后与检测模块连接。然后得到足底各点的压力曲线。通过对曲线的分析，可以得出对糖尿病患者康复和运动损伤检测具有重要意义的几个人体运动参数，包括步频、长度和速度。全面的，
更新日期：2022-05-02
中文翻译：
基于混合锆钛酸铅/微纤化纤维素压电复合薄膜的足底可穿戴压力传感器用于人体健康监测
柔性和可穿戴电子传感器由于其低成本、灵活性、高机电耦合性能、高灵敏度和生物相容性，为改善生活质量，特别是在医疗保健监测领域带来了巨大希望。为了实现类似于刚性材料的高压电性能，同时满足可穿戴传感器的柔性要求，我们提出了基于锆钛酸铅粉末和微纤化纤维素 (PZT/MFC) 的新型混合薄膜，用于足底压力测量。测试了使用偏振工艺制成的柔性薄膜。发现最大压电系数为31 pC N -1柔性薄膜的最大拉伸力为26 N。15°和180°之间的广泛弯曲角度证明了薄膜的柔性能力。此外，电荷密度与所施加的机械力呈正比关系，它可以感应到 1 kPa 的应力。最后，将足底压力传感器排列并封装成薄膜阵列，然后与检测模块连接。然后得到足底各点的压力曲线。通过对曲线的分析，可以得出对糖尿病患者康复和运动损伤检测具有重要意义的几个人体运动参数，包括步频、长度和速度。全面的，
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