Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/156832
Title: Ultrasensitive exhaled breath sensors based on anti-resonant hollow core fiber with in situ grown ZnO-Bi₂O₃ nanosheets
Authors: Liu, Wei
Zheng, Yu
Wang, Zhe
Wang, Zhixun
Yang, Jiao
Chen, Mengxiao
Qi, Miao
Rehman, Shafiq Ur
Shum, Perry Ping
Zhu, Ling
Wei, Lei
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: Liu, W., Zheng, Y., Wang, Z., Wang, Z., Yang, J., Chen, M., Qi, M., Rehman, S. U., Shum, P. P., Zhu, L. & Wei, L. (2021). Ultrasensitive exhaled breath sensors based on anti-resonant hollow core fiber with in situ grown ZnO-Bi₂O₃ nanosheets. Advanced Materials Interfaces, 8(6), 2001978-. https://dx.doi.org/10.1002/admi.202001978
Project: MOE2019-T2-2-127
T2EP50120-0005
A2083c0062
RG90/19
RG73/19
NRF-CRP18-2017-02
Journal: Advanced Materials Interfaces
Abstract: Combination of anti-resonant hollow-core fiber (HCF) and semiconductor nanomaterial is an effective strategy to obtain high-performance gas sensors with exceptional sensitivity and low power consumption. However, controlling the semiconductor morphology onto HCF is a major challenge to achieve the desired gas sensor with the enhanced sensitivity. Here, a ZnO-Bi2O3 nanosheets (NSs) heterostructure is grown in situ on the surface of HCF by sol–gel and hydrothermal methods. ZnO-Bi2O3 NSs serving as electron acceptors trap electrons after acetone adsorption and then change the refractive index of the surface of HCF. Benefiting from the unique sheet structure and the synergetic effects for multi-component, the resulting ZnO-Bi2O3 NSs enabled HCF gas sensor exhibits high sensitivity, selectivity, and repeatability for detecting acetone at room temperature, particularly in the low concentration range, with the theoretical limit of detection down to 140 parts-per-billion. Meanwhile, the successful application of the ZnO-Bi2O3 NSs enabled HCF gas sensor to distinguish the exhaled breath from the healthy individuals and simulated diabetic cases is demonstrated, which paves the way to achieve non-invasive, ultra-sensitivity gas sensing at room temperature for the early diagnosis of diabetes.
URI: https://hdl.handle.net/10356/156832
ISSN: 2196-7350
DOI: 10.1002/admi.202001978
DOI (Related Dataset): 10.21979/N9/FMRD5F
Rights: This is the peer reviewed version of the following article: Liu, W., Zheng, Y., Wang, Z., Wang, Z., Yang, J., Chen, M., Qi, M., Rehman, S. U., Shum, P. P., Zhu, L. & Wei, L. (2021). Ultrasensitive exhaled breath sensors based on anti-resonant hollow core fiber with in situ grown ZnO-Bi₂O₃ nanosheets. Advanced Materials Interfaces, 8(6), 2001978-, which has been published in final form at https://doi.org/10.1002/admi.202001978. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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