Abstract: In recent years, the field of wearable devices has been becoming a research hotspot with the rapid development of intelligent technologies. In practical applications, flexible wearable devices, especially fiber/fabric-based devices, have broader prospects because they provide a new strategy for solving the problems such as poor comfortability, washability, and flexibility. Also, it is a better idea from the point of environmental protection. Therefore, the research is of great realistic significance. This paper introduces several typical flexible wearable devices first, and the advance in flexibility of wearable devices is briefly introduced as well. Then, the preparation methods and classification of fiber/fabric-based devices is overviewed. Finally, their latest applications in wearable fields such as flexible sensors, energy devices, and electrodes are reviewed in detail. In summary, with the integration of materials science, textile technology and microelectronics technology, to fabricate more textile-structured flexible devices through systematic design and integrated molding is an objective requirement and inevitable trend for the further development of wearable products.
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