材料科学
复合材料
压力传感器
压电
钛酸钡
纳米纤维
复合数
碳纳米管
纳米技术
陶瓷
机械工程
工程类
作者
Bangze Zhou,Chenchen Li,Yanfen Zhou,Zhanxu Liu,Xue Gao,Xueqin Wang,Liang Jiang,Mingwei Tian,Fenglei Zhou,Stephen Jerrams,Jianyong Yu
标识
DOI:10.1016/j.compscitech.2022.109478
摘要
Wearable flexible sensors have developed rapidly in recent years because of their improved capacity to detect human motion in wide-ranging situations. In order to meet the requirements of flexibility and low detection limits, a new pressure sensor was fabricated based on electrospun barium titanate/multi-wall carbon nanotubes (BTO@MWCNTs) core-shell nanofibers coated with styrene-ethylene-butene-styrene block copolymer (SEBS). The sensor material (BTO@MWCNTs/SEBS) had a SEBS to BTO/MWCNTs mass ratio of 20:1 and exhibited an excellent piezoelectricity over a wide range of workable pressures from 1 to 50 kPa, higher output current of 56.37 nA and a superior piezoresistivity over a broad working range of 20–110 kPa in compression. The sensor also exhibited good durability and repeatability under different pressures and under long-term cyclic loading. These properties make the composite ideal for applications requiring monitoring subtle pressure changes (exhalation, pulse rate) and finger movements. The pressure sensor developed based on BTO@MWCNTs core-shell nanofibers has demonstrated great potential to be assembled into intelligent wearable devices. • A new pressure sensor was fabricated based on electrospun BTO@MWCNTs core-shell nanofibers and SEBS. • The BTO@MWCNTs/SEBS composite exhibited a piezoelectricity with a working pressure range as wide as 1–50 kPa in compression and an output current as high as of 56.97 nA. • The fabricated BTO@MWCNTs/SEBS pressure sensors were capable of sensing in an ultra-wide working range (1–110 kPa).
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