Light backscattering (e.g. reflectance) by ZnO nanorods on tips of plastic optical fibres with application for humidity and alcohol vapour sensing

Relative humidity and alcohol vapour sensing by light backscattering was demonstrated by zinc oxide (ZnO) nanorods grown on tips of plastic optical fibres. Synthesis of ZnO nanostructures was accomplished by the hydrothermal method. A new technique was proposed to extract the backscattered light by...

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Bibliographic Details
Published in:Micro & nano letters 2016-12, Vol.11 (12), p.832-836
Main Authors: Lokman, Muhammad Quisar, Bin Abdul Rahim, Hazli Rafis, Harun, Sulaiman Wadi, Hornyak, G. Louis, Mohammed, Waleed Soliman
Format: Article
Language:English
Subjects:
alcohol vapour sensing
alcohol vapours
gas sensors
humidity sensors
hydrothermal method
II‐VI semiconductors
light backscattering
light scattering
liquid phase deposition
moisture vapours
nanofabrication
nanorods
plastic optical fibres
relative humidity vapour sensing
semiconductor growth
spectral reflectance
surface structure
surface structures
visible spectra
visible spectrum
wide band gap semiconductors
zinc compounds
zinc oxide nanorods
ZnO
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Summary:Relative humidity and alcohol vapour sensing by light backscattering was demonstrated by zinc oxide (ZnO) nanorods grown on tips of plastic optical fibres. Synthesis of ZnO nanostructures was accomplished by the hydrothermal method. A new technique was proposed to extract the backscattered light by ZnO nanostructures. The system was shown experimentally to sense moisture and alcohol vapours. Three ranges of the visible spectrum blue (450–500 nm), green (500–570 nm) and red (610–700 nm) were studied in experiments. Spectral reflectance based on backscattering from ZnO surface structures was used to measure the amount of light backscattered by ZnO nanorods. Results showed that light in the red visible range of the spectrum had higher sensitivity and reflectivity compared with blue and green spectral ranges.
ISSN:1750-0443
1750-0443
DOI:10.1049/mnl.2016.0321