Porous structure induced crack redistribution in surface conductive layer for high-performance fiber-based flexible strain and pressure sensors

doi:10.1002/pat.6124

IMR OpenIR

	Porous structure induced crack redistribution in surface conductive layer for high-performance fiber-based flexible strain and pressure sensors
	Cui, Xihua 1,2,3,4; Xie, Hongyan 1; Jiang, Yue 1; Xu, Zhiguang 1,4; Sui, Guoxin 3,5; Yang, Xiaoming 3
通讯作者	Cui, Xihua(xhcui@zjxu.edu.cn) ; Xu, Zhiguang(zhiguang.xu@zjxu.edu.cn) ; Sui, Guoxin(gxsui@imr.ac.cn)
	2023-06-12
发表期刊	POLYMERS FOR ADVANCED TECHNOLOGIES
ISSN	1042-7147
页码	11
摘要	Constructing crack structure has been proven as an effective method to prepare highly sensitive strain/pressure sensors. However, the crack-structured strain/pressure sensors usually show limited sensing range because of the rapid destruction of conductive networks. Herein, a porous poly(styrene-b-ethylene-b-butylene-b-styrene) (SEBS)-based fiber with surface carbon nanotube (CNT) conductive layer is prepared by melt extrusion foaming and ultrasonic treatment. Cracks generate in the conductive layer under stretching due to the modulus mismatch. It is found that the introduction of porous structure leads to the redistribution of surface cracks. The conductive layer around pores cracks first under small strain due to the stress concentration effect, and the conductive layer away from pores then cracks under large strain, which prevents the rapid destruction of the conductive networks. Consequently, the porous conductive fiber-based strain sensors exhibit both high sensitivity (gauge factor of 27.2 at the strain of 350%) and wide sensing range (0%-350%). Furthermore, a high-performance flexible pressure sensor is fabricated by perpendicularly stacking two porous SEBS@CNTs fibers, which can be applied in wearable human motion monitoring and information transmission. Our study inspires a new idea and proposes a simple strategy for fabricating high-performance crack-structured flexible strain/pressure sensors with high sensitivity over a wide sensing range.
关键词	carbon nanotubes conductive fibers crack redistribution flexible sensors porous structure
资助者	National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation of China ; China Postdoctoral Science Foundation
DOI	10.1002/pat.6124
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52103081] ; Zhejiang Provincial Natural Science Foundation of China[LQ22E030005] ; China Postdoctoral Science Foundation[2022M713209]
WOS研究方向	Polymer Science
WOS类目	Polymer Science
WOS记录号	WOS:001005434300001
出版者	WILEY
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178238
专题	中国科学院金属研究所
通讯作者	Cui, Xihua; Xu, Zhiguang; Sui, Guoxin
作者单位	1.Jiaxing Univ, China Australia Inst Adv Mat & Mfg, Jiaxing, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China 3.Zhejiang Fulai New Mat Co LTD, Jiaxing, Peoples R China 4.Jiaxing Univ, China Australia Inst Adv Mat & Mfg, Jiaxing 314001, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Cui, Xihua,Xie, Hongyan,Jiang, Yue,et al. Porous structure induced crack redistribution in surface conductive layer for high-performance fiber-based flexible strain and pressure sensors[J]. POLYMERS FOR ADVANCED TECHNOLOGIES,2023:11.
APA	Cui, Xihua,Xie, Hongyan,Jiang, Yue,Xu, Zhiguang,Sui, Guoxin,&Yang, Xiaoming.(2023).Porous structure induced crack redistribution in surface conductive layer for high-performance fiber-based flexible strain and pressure sensors.POLYMERS FOR ADVANCED TECHNOLOGIES,11.
MLA	Cui, Xihua,et al."Porous structure induced crack redistribution in surface conductive layer for high-performance fiber-based flexible strain and pressure sensors".POLYMERS FOR ADVANCED TECHNOLOGIES (2023):11.