Harith, Zuraidah and Batumalay, Malathy and Irawati, Ninik and Harun, Sulaiman Wadi and Arof, Hamzah and Ahmad, Harith (2017) Relative humidity sensor employing tapered plastic optical fiber coated with seeded Al-doped ZnO. Optik, 144. pp. 257-262. ISSN 0030-4026, DOI https://doi.org/10.1016/j.ijleo.2017.06.123.
Full text not available from this repository.Abstract
A relative humidity sensor operating on intensity modulation principle is proposed and demonstrated using a tapered plastic optical fiber (POF) that is coated with seeded Al-doped ZnO nanostructures. The POF was tapered by mechanical etching and then coated with seeded Al-doped ZnO nanostructures using sol-gel immersion method with different mol% of Al nitrate that acted as dopant. It was found that 1 mol% of Al nitrate produced the best performance compared to other doping concentrations. Then the performances of sensors fabricated using seeded and non-seeded coating methods with 1 mol% of Al-doped ZnO were compared and investigated. The sensor developed using seeded coating method showed a better sensitivity of 0.0386 mV/%, as opposed to the other sensor which registered a sensitivity of 0.0148 mV/%. The results show that tapered POF with Al-doped ZnO nanostructures deposited using seeded coating method is excellent for detecting changes in relative humidity.
| Item Type: | Article |
|---|---|
| Funders: | Grant INT-FITMS-02-01-2016 from INTI International University |
| Uncontrolled Keywords: | Al-doped zinc oxide; Fiber optic sensor; Tapered plastic optical fiber; Relative humidity (RH) sensor |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 04 Aug 2017 07:12 |
| Last Modified: | 16 Oct 2018 03:44 |
| URI: | http://eprints.um.edu.my/id/eprint/17636 |
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