ABSTRACT
Flexible and wearable sensors have enormous importance for their potential application in real-time human movement detection, health diagnosis, and environmental and chemical monitoring. This new kind of sensor technology requires innovations such as how to synthesize sensing material on a flexible platform, as well as developing miniaturized sensing devices, reducing the discomfort of the mounted device on the skin, and removing the dependence of the sensor on an external power supply. Therefore, materials possessing high conducting properties, low power consumption, mechanical stretchability, and flexibility are in great demand. MXene, as an emerging two-dimensional (2D) member of the early transition metal carbide and nitride family, has provoked a boom in the field of sensing applications, from the detection of body movements to target gas analytes. More significantly, with the change in morphology of MXene from 2D to 1D, the reported sensors based on MXene/polymer composite nanofibers show high flexibility and stretchability, long durability for wearable device applications, and high specific surface area for sensing applications. In this chapter, we summarize the recent progress in the development of MXene-based sensors in terms of material synthesis, device fabrication, and performance. This chapter might trigger further development of MXene-based multifunctional devices for their advanced application and desirable contributions to wearable technology.
