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Reflectance response of optical fiber coated with carbon nanotubes for aqueous ethanol sensing


Shabaneh, Arafat Abdallah Abdelwadod and Girei, Saad Hayatu and M. Thirunavakkarasu, Punithavathi and Abdul Rashid, Suraya and Yunusa, Zainab and Mahdi, Mohd Adzir and Paiman, Suriati and Ahmad, Muhammad Zamharir and Yaacob, Mohd Hanif (2014) Reflectance response of optical fiber coated with carbon nanotubes for aqueous ethanol sensing. IEEE Photonics Journal, 6 (6). art. no. 6802910. ISSN 1943-0655


Ethanol is a highly flammable chemical and is widely used for medical and industrial applications. In this paper, optical sensing performance of aqueous ethanol with different concentrations is investigated using multimode fiber coated with carbon nanotubes (CNT). The multimode optical fiber tip is coated with CNT via a drop-casting technique and is annealed at 70 °C to improve the binding of the nanomaterial to the silica fiber. The optical fiber tip and the CNT sensing layer are microcharacterized using field emission scanning electron microscopy, Raman spectroscopy, and X-ray diffraction techniques. The reflectance response of the developed fiber sensor is measured using a spectrophotometer in the optical wavelength range of 500-800 nm. Upon exposure to ethanol with concentration ranges of 5%-80%, the sensor reflectance reduced proportionally. The dynamic response decreased by 4% when the sensor is exposed to ethanol with concentration of 80% in distilled water. It is found that the sensor shows fast response and recovery as low as 38 and 49 s, respectively.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1109/JPHOT.2014.2363429
Publisher: Institute of Electrical and Electronics Engineers
Keywords: CNT; Ethanol sensing; Multi-mode fiber; Optical fiber sensor; Reflectance
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 26 Apr 2016 02:07
Last Modified: 23 Oct 2019 07:58
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/JPHOT.2014.2363429
URI: http://psasir.upm.edu.my/id/eprint/35188
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