Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers
We demonstrate an ammonia sensor composed of a tapered multimode fiber coated with polyaniline nanofibers that operates at room temperature (26°C). The optical properties of the polyaniline layer changes when it is exposed to ammonia, leading to a change in the absorption of evanescent field. The fi...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Optical Society of America
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/56319/ http://psasir.upm.edu.my/id/eprint/56319/1/Room%20temperature%20ammonia%20sensing%20using%20tapered%20multimode%20fiber%20coated%20with%20polyaniline%20nanofibers.pdf |
| _version_ | 1848853049774178304 |
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| author | Ibrahim @ Ghazali, Siti Azlida Abdul Rahman, Norizah Abu Bakar, Muhammad Hafiz Girei, Saad Hayatu Yaacob, Mohd Hanif Ahmad, Harith Mahdi, Mohd Adzir |
| author_facet | Ibrahim @ Ghazali, Siti Azlida Abdul Rahman, Norizah Abu Bakar, Muhammad Hafiz Girei, Saad Hayatu Yaacob, Mohd Hanif Ahmad, Harith Mahdi, Mohd Adzir |
| author_sort | Ibrahim @ Ghazali, Siti Azlida |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | We demonstrate an ammonia sensor composed of a tapered multimode fiber coated with polyaniline nanofibers that operates at room temperature (26°C). The optical properties of the polyaniline layer changes when it is exposed to ammonia, leading to a change in the absorption of evanescent field. The fiber sensor was tested by exposing it to ammonia at different concentrations and the absorbance is measured using a spectrophotometer system. Measured response and recovery times are about 2.27 minutes and 9.73 minutes, respectively. The sensor sensitivity can be controlled by adjusting the tapered fiber diameter and the highest sensitivity is achieved when the diameter is reduced to 20 μm. |
| first_indexed | 2025-11-15T10:47:48Z |
| format | Article |
| id | upm-56319 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:47:48Z |
| publishDate | 2015 |
| publisher | Optical Society of America |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-563192017-07-31T05:49:11Z http://psasir.upm.edu.my/id/eprint/56319/ Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers Ibrahim @ Ghazali, Siti Azlida Abdul Rahman, Norizah Abu Bakar, Muhammad Hafiz Girei, Saad Hayatu Yaacob, Mohd Hanif Ahmad, Harith Mahdi, Mohd Adzir We demonstrate an ammonia sensor composed of a tapered multimode fiber coated with polyaniline nanofibers that operates at room temperature (26°C). The optical properties of the polyaniline layer changes when it is exposed to ammonia, leading to a change in the absorption of evanescent field. The fiber sensor was tested by exposing it to ammonia at different concentrations and the absorbance is measured using a spectrophotometer system. Measured response and recovery times are about 2.27 minutes and 9.73 minutes, respectively. The sensor sensitivity can be controlled by adjusting the tapered fiber diameter and the highest sensitivity is achieved when the diameter is reduced to 20 μm. Optical Society of America 2015 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/56319/1/Room%20temperature%20ammonia%20sensing%20using%20tapered%20multimode%20fiber%20coated%20with%20polyaniline%20nanofibers.pdf Ibrahim @ Ghazali, Siti Azlida and Abdul Rahman, Norizah and Abu Bakar, Muhammad Hafiz and Girei, Saad Hayatu and Yaacob, Mohd Hanif and Ahmad, Harith and Mahdi, Mohd Adzir (2015) Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers. Optics Express, 23 (3). pp. 2837-2845. ISSN 1094-4087 https://www.osapublishing.org/oe/abstract.cfm?uri=oe-23-3-2837 10.1364/OE.23.002837 |
| spellingShingle | Ibrahim @ Ghazali, Siti Azlida Abdul Rahman, Norizah Abu Bakar, Muhammad Hafiz Girei, Saad Hayatu Yaacob, Mohd Hanif Ahmad, Harith Mahdi, Mohd Adzir Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers |
| title | Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers |
| title_full | Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers |
| title_fullStr | Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers |
| title_full_unstemmed | Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers |
| title_short | Room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers |
| title_sort | room temperature ammonia sensing using tapered multimode fiber coated with polyaniline nanofibers |
| url | http://psasir.upm.edu.my/id/eprint/56319/ http://psasir.upm.edu.my/id/eprint/56319/ http://psasir.upm.edu.my/id/eprint/56319/ http://psasir.upm.edu.my/id/eprint/56319/1/Room%20temperature%20ammonia%20sensing%20using%20tapered%20multimode%20fiber%20coated%20with%20polyaniline%20nanofibers.pdf |