Liu Lu, Wang Libo, Liu Xuqing, Yuan Wenfeng, Yuan Mengmeng, Xia Qixun, Hu Qianku, Zhou Aiguo
Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China.
Department of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
Nanomaterials (Basel). 2021 Mar 31;11(4):889. doi: 10.3390/nano11040889.
Flexible and comfortable wearable electronics are as a second skin for humans as they can collect the physiology of humans and show great application in health and fitness monitoring. MXene TiCT have been used in flexible electronic devices for their unique properties such as high conductivity, excellent mechanical performance, flexibility, and good hydrophilicity, but less research has focused on MXene-based cotton fabric strain sensors. In this work, a high-performance wearable strain sensor composed of two-dimensional (2D) MXene d-TiCT nanomaterials and cotton fabric is reported. Cotton fabrics were selected as substrate as they are comfortable textiles. As the active material in the sensor, MXene d-TiCT exhibited an excellent conductivity and hydrophilicity and adhered well to the fabric fibers by electrostatic adsorption. The gauge factor of the MXene@cotton fabric strain sensor reached up to 4.11 within the strain range of 15%. Meanwhile, the sensor possessed high durability (>500 cycles) and a low strain detection limit of 0.3%. Finally, the encapsulated strain sensor was used to detect subtle or large body movements and exhibited a rapid response. This study shows that the MXene@cotton fabric strain sensor reported here have great potential for use in flexible, comfortable, and wearable devices for health monitoring and motion detection.
灵活舒适的可穿戴电子产品就像人类的第二层皮肤，因为它们能够收集人体生理信息，并在健康和健身监测方面展现出巨大的应用潜力。MXene TiCT因其高导电性、优异的机械性能、柔韧性和良好的亲水性等独特性能，已被应用于柔性电子设备中，但基于MXene的棉织物应变传感器的研究较少。在这项工作中，报道了一种由二维（2D）MXene d-TiCT纳米材料和棉织物组成的高性能可穿戴应变传感器。选择棉织物作为基底是因为它们是舒适的纺织品。作为传感器中的活性材料，MXene d-TiCT表现出优异的导电性和亲水性，并通过静电吸附很好地附着在织物纤维上。MXene@棉织物应变传感器在15%的应变范围内，应变系数高达4.11。同时，该传感器具有高耐久性（>500次循环）和0.3%的低应变检测极限。最后，封装后的应变传感器用于检测细微或大幅度的身体运动，并表现出快速响应。这项研究表明，本文报道的MXene@棉织物应变传感器在用于健康监测和运动检测的柔性、舒适和可穿戴设备方面具有巨大的应用潜力。
