Multifunctional Wearable Strain Sensor Made with an Elastic Interwoven Fabric for Patients with Motor Dysfunction,Advanced Materials Technologies

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Multifunctional Wearable Strain Sensor Made with an Elastic Interwoven Fabric for Patients with Motor Dysfunction
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2020-09-04 , DOI: 10.1002/admt.202000560
Jingdong Feng ₁ , Xinyi Wang ₁ , Zihao Lv ₁ , Jiangang Qu _{1,

2} , Xiaomin Lu _{1,

3} , Qufu Wei ₁ , Qingqing Wang ₁

Affiliation

As the recovery of patients with motor dysfunction can be a time‐consuming process, flexible wearable electronics with a large workable strain range and high sensitivity for detecting various human motions may be useful for real‐time monitoring and evaluation of treatment progress. In this study, cotton/spandex core‐spun yarns are chosen as weft yarns and interwoven with acrylic plied yarn to prepare an elastic fabric, which is sequentially coated with carboxylic multi‐walled carbon nanotubes and silver nanoparticle‐based conductive layers to finally obtain a high‐performance strain sensor (resistance = 60 Ω). The strain sensor displays high sensitivity (gauge factor = 1799) and a large detectable strain range (tolerable strain up to 100%). After 1000 stretching–releasing tests, the sensor still shows favorable electromechanical stability. It is confirmed that large‐scale human joint motions and subtle signals can be detected and identified based on relative resistance variations. In addition, the sensor shows a satisfactory photothermal effect (temperature rises from 18.6 to 35.8 °C within 2 min under IR light illumination) and good antibacterial efficiency (99.74% against Escherichia coli and 97.67% against Staphylococcus aureus). This strain sensor has great potential for future application as an auxiliary tool for evaluating motor recovery in patients with motor dysfunction.

中文翻译：

由弹性交织织物制成的多功能可穿戴应变传感器，用于运动功能障碍患者

由于运动功能障碍患者的康复可能是一个耗时的过程，因此具有较大工作应变范围且对检测各种人体动作具有高灵敏度的柔性可穿戴电子设备可能对实时监测和评估治疗进展很有用。在本研究中，选择棉/氨纶包芯纱作为纬纱，并与丙烯酸合股纱交织以制备弹性织物，该织物依次涂覆有羧基多壁碳纳米管和银纳米颗粒基导电层，最终获得了高性能应变传感器（电阻= 60 Ω）。应变传感器显示高灵敏度（应变系数=1799）和大的可检测应变范围（可承受的应变高达100％）。经过1000次释放测试后，该传感器仍显示出良好的机电稳定性。已经证实，可以基于相对电阻变化来检测和识别大规模的人体关节运动和微妙的信号。此外，该传感器还显示出令人满意的光热效应（在红外照明下2分钟内温度从18.6升高到35.8 ° C）和良好的抗菌效率（对大肠杆菌为99.74％，对金黄色葡萄球菌为97.67％）。这种应变传感器作为评估运动障碍患者运动恢复的辅助工具，具有广阔的应用前景。

更新日期：2020-11-12

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