Formaldehyde sensing using ZnO nanorods coated glass integrated with microfiber
A proposed formaldehyde (CH2O) sensor is fabricated by exploiting evanescent wave on a glass surface coated with Zinc Oxide (ZnO) nanorods integrated with microfiber. The diameter of silica fiber is reduced by tapering using flame brushing technique to a waist diameter of 6 µm. The glass surface was...
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my.um.eprints.241202020-03-31T15:31:53Z http://eprints.um.edu.my/24120/ Formaldehyde sensing using ZnO nanorods coated glass integrated with microfiber Jali, Mohd Hafiz Rahim, Hazli Rafis Abdul Johari, Md Ashadi Md Yusof, Haziezol Helmi Mohd Rahman, B.M.A Harun, Sulaiman Wadi Yasin, Moh QC Physics TK Electrical engineering. Electronics Nuclear engineering A proposed formaldehyde (CH2O) sensor is fabricated by exploiting evanescent wave on a glass surface coated with Zinc Oxide (ZnO) nanorods integrated with microfiber. The diameter of silica fiber is reduced by tapering using flame brushing technique to a waist diameter of 6 µm. The glass surface was coated with ZnO nanorods using hydrothermal synthesis method. A significant response to formaldehyde concentrations from 0 ppm to 0.18 ppm was observed due to strong chemisorption process and changeable refractive index of the ZnO nanorods coated glass surface. Thus, the output power of the proposed sensor has reduced linearly from −22.64 dBm to −24.24 dBm with sensitivity and resolution of 9.78 dBm/ppm and 0.0016 ppm respectively. Sensitivity improved by a factor of 3 and the resolution by a factor of 2.5 when the glass surface is coated as compared to uncoated glass surface. The proposed formaldehyde sensor exploit the distinctive features of strong evanescent wave from silica microfiber and surface absorption capability of ZnO nanorods coated glass surface which eased the handling procedure during the synthesis process and sensing applications. Based on the experimental result, the proposed sensor has demonstrated an excellent sensing performance as a formaldehyde sensor. © 2019 Elsevier Ltd Elsevier 2019 Article PeerReviewed Jali, Mohd Hafiz and Rahim, Hazli Rafis Abdul and Johari, Md Ashadi Md and Yusof, Haziezol Helmi Mohd and Rahman, B.M.A and Harun, Sulaiman Wadi and Yasin, Moh (2019) Formaldehyde sensing using ZnO nanorods coated glass integrated with microfiber. Optics & Laser Technology, 120. p. 105750. ISSN 0030-3992 https://doi.org/10.1016/j.optlastec.2019.105750 doi:10.1016/j.optlastec.2019.105750 |
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QC Physics TK Electrical engineering. Electronics Nuclear engineering Jali, Mohd Hafiz Rahim, Hazli Rafis Abdul Johari, Md Ashadi Md Yusof, Haziezol Helmi Mohd Rahman, B.M.A Harun, Sulaiman Wadi Yasin, Moh Formaldehyde sensing using ZnO nanorods coated glass integrated with microfiber |
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A proposed formaldehyde (CH2O) sensor is fabricated by exploiting evanescent wave on a glass surface coated with Zinc Oxide (ZnO) nanorods integrated with microfiber. The diameter of silica fiber is reduced by tapering using flame brushing technique to a waist diameter of 6 µm. The glass surface was coated with ZnO nanorods using hydrothermal synthesis method. A significant response to formaldehyde concentrations from 0 ppm to 0.18 ppm was observed due to strong chemisorption process and changeable refractive index of the ZnO nanorods coated glass surface. Thus, the output power of the proposed sensor has reduced linearly from −22.64 dBm to −24.24 dBm with sensitivity and resolution of 9.78 dBm/ppm and 0.0016 ppm respectively. Sensitivity improved by a factor of 3 and the resolution by a factor of 2.5 when the glass surface is coated as compared to uncoated glass surface. The proposed formaldehyde sensor exploit the distinctive features of strong evanescent wave from silica microfiber and surface absorption capability of ZnO nanorods coated glass surface which eased the handling procedure during the synthesis process and sensing applications. Based on the experimental result, the proposed sensor has demonstrated an excellent sensing performance as a formaldehyde sensor. © 2019 Elsevier Ltd |
format |
Article |
author |
Jali, Mohd Hafiz Rahim, Hazli Rafis Abdul Johari, Md Ashadi Md Yusof, Haziezol Helmi Mohd Rahman, B.M.A Harun, Sulaiman Wadi Yasin, Moh |
author_facet |
Jali, Mohd Hafiz Rahim, Hazli Rafis Abdul Johari, Md Ashadi Md Yusof, Haziezol Helmi Mohd Rahman, B.M.A Harun, Sulaiman Wadi Yasin, Moh |
author_sort |
Jali, Mohd Hafiz |
title |
Formaldehyde sensing using ZnO nanorods coated glass integrated with microfiber |
title_short |
Formaldehyde sensing using ZnO nanorods coated glass integrated with microfiber |
title_full |
Formaldehyde sensing using ZnO nanorods coated glass integrated with microfiber |
title_fullStr |
Formaldehyde sensing using ZnO nanorods coated glass integrated with microfiber |
title_full_unstemmed |
Formaldehyde sensing using ZnO nanorods coated glass integrated with microfiber |
title_sort |
formaldehyde sensing using zno nanorods coated glass integrated with microfiber |
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Elsevier |
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2019 |
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http://eprints.um.edu.my/24120/ https://doi.org/10.1016/j.optlastec.2019.105750 |
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1662755225725829120 |
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