Optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods
An experimental study of the dynamic range maximization with Zinc Oxide (ZnO) nanorods coated glass substrates for humidity and vapor sensing is reported. Growth time of the nanorods and the length of the coated segments were controlled to study the differences between a reference environmental cond...
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| Format: | Article |
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Elsevier
2018
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| _version_ | 1825721457882169344 |
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| author | Yusof, Haziezol Helmi Mohd Harun, Sulaiman Wadi Dimyati, Kaharudin Bora, Tanujjal Mohammed, Waleed S. Dutta, Joydeep |
| author_facet | Yusof, Haziezol Helmi Mohd Harun, Sulaiman Wadi Dimyati, Kaharudin Bora, Tanujjal Mohammed, Waleed S. Dutta, Joydeep |
| author_sort | Yusof, Haziezol Helmi Mohd |
| collection | UM |
| description | An experimental study of the dynamic range maximization with Zinc Oxide (ZnO) nanorods coated glass substrates for humidity and vapor sensing is reported. Growth time of the nanorods and the length of the coated segments were controlled to study the differences between a reference environmental condition (normal humidity or dry condition) and water vapor concentrations. In order to achieve long dynamic range of detection with respect to nanorods coverage, several substrates with triangular patterns of ZnO nanostructures were fabricated by selective hydrothermal growth over different durations of time (5 h, 10 h and 15 h). It was found that maximum dynamic range for the humidity sensing occurs for the combination parameters of normalized length (Z) of 0.23 and normalized scattering coefficient (ζ) of 0.3. A reduction in transmittance by 38% at humidity levels of 80% with reference point as 50% humidity was observed. The results could be correlated to a first order approximation model that assumes uniform growth and the optimum operating conditions for humidity sensing device. This study provides an option to correlate ZnO growth conditions for different vapor sensing applications which can set a platform for compact sensors where modulation of light intensity is followed. |
| first_indexed | 2024-03-06T05:50:37Z |
| format | Article |
| id | um.eprints-20238 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:50:37Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-202382019-01-30T04:46:18Z http://eprints.um.edu.my/20238/ Optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods Yusof, Haziezol Helmi Mohd Harun, Sulaiman Wadi Dimyati, Kaharudin Bora, Tanujjal Mohammed, Waleed S. Dutta, Joydeep TK Electrical engineering. Electronics Nuclear engineering An experimental study of the dynamic range maximization with Zinc Oxide (ZnO) nanorods coated glass substrates for humidity and vapor sensing is reported. Growth time of the nanorods and the length of the coated segments were controlled to study the differences between a reference environmental condition (normal humidity or dry condition) and water vapor concentrations. In order to achieve long dynamic range of detection with respect to nanorods coverage, several substrates with triangular patterns of ZnO nanostructures were fabricated by selective hydrothermal growth over different durations of time (5 h, 10 h and 15 h). It was found that maximum dynamic range for the humidity sensing occurs for the combination parameters of normalized length (Z) of 0.23 and normalized scattering coefficient (ζ) of 0.3. A reduction in transmittance by 38% at humidity levels of 80% with reference point as 50% humidity was observed. The results could be correlated to a first order approximation model that assumes uniform growth and the optimum operating conditions for humidity sensing device. This study provides an option to correlate ZnO growth conditions for different vapor sensing applications which can set a platform for compact sensors where modulation of light intensity is followed. Elsevier 2018 Article PeerReviewed Yusof, Haziezol Helmi Mohd and Harun, Sulaiman Wadi and Dimyati, Kaharudin and Bora, Tanujjal and Mohammed, Waleed S. and Dutta, Joydeep (2018) Optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods. Photonics and Nanostructures - Fundamentals and Applications, 30. pp. 57-64. ISSN 1569-4410, DOI https://doi.org/10.1016/j.photonics.2018.04.008 <https://doi.org/10.1016/j.photonics.2018.04.008>. https://doi.org/10.1016/j.photonics.2018.04.008 doi:10.1016/j.photonics.2018.04.008 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Yusof, Haziezol Helmi Mohd Harun, Sulaiman Wadi Dimyati, Kaharudin Bora, Tanujjal Mohammed, Waleed S. Dutta, Joydeep Optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods |
| title | Optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods |
| title_full | Optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods |
| title_fullStr | Optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods |
| title_full_unstemmed | Optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods |
| title_short | Optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods |
| title_sort | optical dynamic range maximization for humidity sensing by controlling growth of zinc oxide nanorods |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
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