Highly Durable and Fast Response Fabric Strain Sensor for Movement Monitoring Under Extreme Conditions
Highly Durable and Fast Response Fabric Strain Sensor for Movement Monitoring Under Extreme Conditions
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DOI：
10.1007/s42765-022-00211-1
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发表时间：
2022-10-07
影响因子：
16.1
通讯作者：
Wang, Qingqing
中科院分区：
文献类型：
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作者：
Lu, Dongxing;Liao, Shiqin;Wang, Qingqing
智能电子纺织品的探索是提高人们生活品质的共同目标。然而，目前的智能电子纺织品仍然面临挑战，例如在潮湿或寒冷条件下容易失效，缺乏洗涤耐久性和化学脆弱性。利用针织物的优良弹性，研制了一种多功能负阻应变传感器。首次采用静电自组装法制备了还原氧化石墨烯（rGO）导电织物。然后采用浸涂法吸附纳米二氧化硅和聚二甲基硅氧烷（PDMS），制备了应变传感器。使用所制备的传感器同时实现了60%的宽工作范围、快速响应时间（22 ms）和超过4000次循环的稳定循环耐久性。此外，由于石墨烯、二氧化硅和PDMS的协同作用，该传感器显示出优异的超疏水性、光热效应和UV保护。这种多功能传感器可以安装在人体关节上执行任务，包括活动监测，医疗康复评估和手势识别，由于其上级机电能力。基于其多项上级特性，该传感器可用作冬季运动服，以跟踪运动员的行动而不受水的影响，并作为保暖器，以确保穿着者的舒适性。
The exploration of smart electronic textiles is a common goal to improve people's quality of life. However, current smart e-textiles still face challenges such as being prone to failure under humid or cold conditions, lack of washing durability and chemical fragility. Herein, a multifunctional strain sensor with a negative resistance change was developed based on the excellent elasticity of knitted fabrics. A reduced graphene oxide (rGO) conductive fabric was first obtained by electrostatic self-assembly of chitosan (CS). Then a strain sensor was prepared using a dip-coating process to adsorb nanoscale silica dioxide and poly(dimethylsiloxane) (PDMS). A broad working range of 60%, a fast response time (22 ms) and stable cycling durability over 4000 cycles were simultaneously achieved using the prepared sensor. Furthermore, the sensor showed excellent superhydrophobicity, photothermal effects and UV protection, as graphene, silica and PDMS acted in synergy. This multifunctional sensor could be mounted on human joints to perform tasks, including activity monitoring, medical rehabilitation evaluation and gesture recognition, due to its superior electromechanical capabilities. Based on its multiple superior properties, this sensor could be used as winter sportswear for athletes to track their actions without being impacted by water and as a warmer to ensure the wearer's comfort.