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	All-Fabric Capacitive Pressure Sensors with Piezoelectric Nanofibers for Wearable Electronics and Robotic Sensing
	Su, Min1,2; Fu, Jianting1; Liu, Zixiao3; Li, Pei1,4; Tai, Guojun1; Wang, Pengsai1,4; Xie, Lei4; Liu, Xueqin2; He, Ximin3; Wei, Dapeng1
	2023-10-09
摘要	Flexible pressure sensors are increasingly sought after for applications ranging from physiological signal monitoring to robotic sensing; however, the challenges associated with fabricating highly sensitive, comfortable, and cost-effective sensors remain formidable. This study presents a high-performance, all-fabric capacitive pressure sensor (AFCPS) that incorporates piezoelectric nanofibers. Through the meticulous optimization of conductive fiber electrodes and P(VDF-TrFE) nanofiber dielectric layers, the AFCPS exhibits exceptional attributes such as high sensitivity (4.05 kPa(-1)), an ultralow detection limit (0.6 Pa), an extensive detection range (similar to 100 kPa), rapid response time (<26 ms), and robust stability (>14,000 cycles). The sensor's porous structure enhances its compressibility, while its piezoelectric properties expedite charge separation, thereby increasing the interface capacitance and augmenting overall performance. These features are elucidated further through multiphysical field-coupling simulations and experimental testing. Owing to its comprehensive superior performance, the AFCPS has demonstrated its efficacy in monitoring human activity and physiological signals, as well as in discerning soft robotic grasping movements. Additionally, we have successfully implemented multiple AFCPS units as pressure sensor arrays to ascertain spatial pressure distribution and enable intelligent robotic gripping. Our research underscores the promising potential of the AFCPS device in wearable electronics and robotic sensing, thereby contributing significantly to the advancement of high-performance fabric-based sensors.
关键词	all-fabric capacitive pressure sensor piezoelectricnanofibers wearable electronics robotic sensing
DOI	10.1021/acsami.3c10775
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
卷号	15期号:41页码:48683-48694
通讯作者	Yang, Jun(jyang@cigit.ac.cn)
收录类别	SCI
WOS记录号	WOS:001082582200001
语种	英语