Events 8th International Electronic Conference on Sensors and Applications

Event submissions

Published

This submission belongs to the session S4. Optical Sensors of the event 8th International Electronic Conference on Sensors and Applications

Published date

01 Nov, 2021

Academic Editor

Sabina Merlo

Citation

Mohammed M. Alkhabet, Saad Hayatu Girei, Suriati Paiman, Norhana Arsad, Mohd Adzir Mahdi, Mohd Hanif Yaacob, Tapered Optical Fiber for Hydrogen Sensing Application Based on Molybdenum trioxide (MoO₃), in Proceedings of 8th International Electronic Conference on Sensors and Applications, 1 November–15 November 2021, MDPI: Basel, Switzerland, doi: 10.3390/ecsa-8-11315

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Tapered Optical Fiber for Hydrogen Sensing Application Based on Molybdenum trioxide (MoO₃)

Mohammed M. Alkhabet ^1,2

Saad Hayatu Girei ^3,4

Suriati Paiman ⁵

Norhana Arsad ⁶

Mohd Adzir Mahdi ⁴

Mohd Hanif Yaacob ⁴

1. Computer Center, University of Fallujah, Al-Fallujah, Iraq.

2. Department of Medical Instrumentations Techniques Engineering , AL-Rasheed University College, Baghdad, Iraq.

3. Department of Computer Engineering, Federal Polytechnic Mubi, Adamawa State, Nigeria.

4. Wireless and Photonics Network Research Center, Faculty of Engineering, University Putra Malaysia,43000 UPM Serdang, Selangor, Malaysia

5. Department of Physics, Faculty of Science, University Putra Malaysia, 43400, Serdang, Selangor, Malaysia

6. Department of Electrical, Electronic and System Engineering, Faculty of Engineering and Built Environment, University Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

Abstract

In this work, molybdenum trioxide (MoO₃) was synthesized and deposited on tapered optical fiber using the drop-casting technique for hydrogen (H₂) detection at room temperature. A transducing platform in a transmission mode was constructed using multimode optical fiber (MMF) with a 125 µm cladding and a 62.5 µm core diameter. To enhance the evanescent light field surrounding the fiber, the fibers were tapered from 125 µm in diameter to 20 µm in diameter with a 10 mm waist. The microstructures and chemical compositions of the fabricated sensor were analyzed by field emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX), differential X-ray (XRD), and atomic force microscopy (AFM). In addition, the gas detection properties of the fabricated sensor were studied by exposing it to various concentrations of hydrogen gas from 0.125% to 2.00%. As a result, the sensitivity, response, and recovery time were 11.96 vol%, 220 s, and 200 s, respectively. Overall, the fabricated sensor exhibits good sensitivity as well as repeatability and stability for hydrogen gas detection.

Keywords

Hydrogen (H2) gas

tapered optical fiber

evanescent wave

molybdenum trioxide (MoO3) and drop-casting technique.

Manuscript

sciforum-048731-done.pdf

Poster

sciforum-048731 Presentation.pdf

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Tapered Optical Fiber for Hydrogen Sensing Application Based on Molybdenum trioxide (MoO3)

Tapered Optical Fiber for Hydrogen Sensing Application Based on Molybdenum trioxide (MoO₃)