A flexible dual-mode pressure sensor with ultra-high sensitivity based on BTO@MWCNTs core-shell nanofibers

Authors

Bangze Zhou, Qingdao University
Chenchen Li, Qingdao University
Yanfen Zhou, Qingdao University
Zhanxu Liu, Qingdao University
Xue Gao, Qingdao University
Xueqin Wang, Qingdao UniversityFollow
Liang Jiang, Qingdao UniversityFollow
Mingwei Tian, Qingdao University
Feng-Lei Zhou, Qingdao University
Stephen Jerrams, Technological University DublinFollow
Jianyong Yu, Donghua University

Document Type

Article

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Disciplines

Materials engineering

Publication Details

Authors' accepted version.

A flexible dual-mode pressure sensor with ultra-high sensitivity based on BTO@MWCNTs core-shell nanofibers

https://authors.elsevier.com/c/1e-OOyZzKyUmQ

Abstract

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 to 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.

DOI

https://doi.org/10.1016/j.compscitech.2022.109478

Recommended Citation

Bangze Zhou, Chenchen Li, Yanfen Zhou, Zhanxu Liu, Xue Gao, Xueqin Wang, Liang Jiang, Mingwei Tian, Feng-Lei Zhou, Stephen Jerrams, Jianyong Yu, A flexible dual-mode pressure sensor with ultra-high sensitivity based on BTO@MWCNTs core-shell nanofibers, Composites Science and Technology, Volume 224, 2022, 109478, ISSN 0266-3538, DOI: 10.1016/j.compscitech.2022.109478.

Funder

National Natural Science Foundation of China, the Postdoctoral Science Foundation of China and Taishan Scholar Foundation of Shandong, China

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.