Fabrication and multiple applications of GMP yarn based flexible sensor

• Published in: Sensors and actuators. A. Physical. 2024-10, Vol.376, p.115565, Article 115565
• Main Authors: Zhao, Zhihua, Wang, Zhikun, Rahmatullah, Abu Bakker Md, Zhou, Baocang, Pan, Yafang, Wu, Lan, Zhang, Shuaiwen
• Format: Article
• Language: English
• Subjects: Au nanoparticles; DFT calculation; Flexible gas sensor; NH3 sensing; Ti3C2Tx MXene
• ISSN: 0924-4247; 1873-3069
• DOI: 10.1016/j.sna.2024.115565

In this modern era, the growing demand for smart wearable devices have triggered the development of various sensors to monitor changes in signals but integrating multiple functions into one sensor have become brainstorming issue to researchers. In addition, most of the preparation methods of sensors load C-nanotubes, graphite and other materials on elastic substrates. So to exempt from aforementioned issues, a novel type of two-dimensional material known as 2D-Ti3C2Tx MXene has been adopted to fabricate the flexible sensor which is composed of polyurethane (PU) yarn as the substrate and MXene flakes which are loaded with Au nanoparticles. Finally the nanocomposite of Au/MXene/PU (GMP) flexible sensor exhibits fruitful comprehensive performances including large stretching range, high sensitivity and good durability. Besides that, the sensor can be utilized to measure the movements of joints, faces, fingers, legs in human body. Furthermore, the sensor contributes great selectivity and fast responses to NH3 at room temperature, which reveals its good multi-functional sensibility. DFT calculations have been employed to further elucidate the sensing mechanism of NH3 on Au/MXene. [Display omitted] •Au/MXene/PU flexible sensor exhibits comprehensive performances including large stretching range, high sensitivity and good durability.•The sensor can well detect the movement of various parts of the human body.•The response to 100 ppm ammonia at room temperature is 15.34 %.•The sensor show good selectivity and fast response, and still has a 15.4 % response to 100 ppm ammonia at 70 % tensile rate.