Issue

Vol. 14 (2022)

Functionalized Fiber-Based Strain Sensors: Pathway to Next-Generation Wearable Electronics

https://doi.org/10.1007/s40820-022-00806-8
Zekun Liu
Department of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Tianxue Zhu
College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
Junru Wang
Department of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Zijian Zheng
Institute of Textiles and Clothing, Research Institute for Intelligent Wearable Systems, Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, SAR, China
Yi Li
Department of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Jiashen Li
Department of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Yuekun Lai
College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China

Corresponding Author: Yuekun Lai

yklai@fzu.edu.cn

Nano-Micro Letters, Vol. 14 (2022), Article Number: 61

Abstract

Wearable strain sensors are arousing increasing research interests in recent years on account of their potentials in motion detection, personal and public healthcare, future entertainment, man–machine interaction, artificial intelligence, and so forth. Much research has focused on fiber-based sensors due to the appealing performance of fibers, including processing flexibility, wearing comfortability, outstanding lifetime and serviceability, low-cost and large-scale capacity. Herein, we review the latest advances in functionalization and device fabrication of fiber materials toward applications in fiber-based wearable strain sensors. We describe the approaches for preparing conductive fibers such as spinning, surface modification, and structural transformation. We also introduce the fabrication and sensing mechanisms of state-of-the-art sensors and analyze their merits and demerits. The applications toward motion detection, healthcare, man–machine interaction, future entertainment, and multifunctional sensing are summarized with typical examples. We finally critically analyze tough challenges and future remarks of fiber-based strain sensors, aiming to implement them in real applications.


Highlights:


1 General principles for fiber functionalization and strain sensor fabrication are briefly reviewed.
2 Future application potentials of wearable strain sensors are summarized and evaluated.
3 Challenges and perspectives of fiber-based wearable strain sensors are critically discussed.

Keywords

Wearable strain sensor Fiber functionalization Wearability Flexible electronics Conductive materials
Liu, Zekun, Tianxue Zhu, Junru Wang, Zijian Zheng, Yi Li, Jiashen Li, and Yuekun Lai. 2022. “Functionalized Fiber-Based Strain Sensors: Pathway to Next-Generation Wearable Electronics”. Nano-Micro Letters 14 (February):61. https://doi.org/10.1007/s40820-022-00806-8.
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