Microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / Aisyah Mohamad Aris

Fiber Bragg gratings (FBG) possess great potential in numerous applications due to its robustness, flexibility and high efficiency. The fabrication of an FBG into a micro fiber extend the evanescent field outside the ambient-cladding boundary and enhance its responsivity towards environmental change...

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Main Author:	Mohamad Aris, Aisyah
Format:	Thesis
Language:	English
Published:	2018
Subjects:	Enviromental management
Online Access:	https://ir.uitm.edu.my/id/eprint/37660/1/37660.pdf
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spelling	my-uitm-ir.376602023-01-26T08:48:19Z Microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / Aisyah Mohamad Aris 2018 Mohamad Aris, Aisyah Enviromental management Fiber Bragg gratings (FBG) possess great potential in numerous applications due to its robustness, flexibility and high efficiency. The fabrication of an FBG into a micro fiber extend the evanescent field outside the ambient-cladding boundary and enhance its responsivity towards environmental changes such as humidity and temperature. More importantly, the attachment of sensitive materials that induce strain and change in the refractive index (RI) are essential for manipulating FBG as a humidity sensor. Hence, this research aims at studying the effect of synthesizing zinc oxide (ZnO) nano structures on a micro-FBG surface using the hydrothermal method. The energy efficient and low cost hydrothermal method resulted in a successful growth of the ZnO nanostructures. Due to the flexibility of the hydrothermal method in controlling the ZnO morphology, through modifications in the seeding technique and the growth process, a highly oriented ZnO nanorod arrays were successfully obtained. Based on the relative humidity (RH) sensor experiments, the ZnO nanorods coating generally exhibited a higher increase in sensitivity of 100% compared to that of the ZnO nanostructures coating which is 85%; both of which were measured against their bare counterpart. Owing to the superior performance of ZnO nanorods, its implementation in temperature sensing effectively demonstrated a 24 times improvement from the bare micro-FBG, bringing down the sensor resolution value to 0.02°C from 0.48°C originally. 2018 Thesis https://ir.uitm.edu.my/id/eprint/37660/ https://ir.uitm.edu.my/id/eprint/37660/1/37660.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering Abdul Rahman, Husna
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Abdul Rahman, Husna
topic	Enviromental management
spellingShingle	Enviromental management Mohamad Aris, Aisyah Microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / Aisyah Mohamad Aris
description	Fiber Bragg gratings (FBG) possess great potential in numerous applications due to its robustness, flexibility and high efficiency. The fabrication of an FBG into a micro fiber extend the evanescent field outside the ambient-cladding boundary and enhance its responsivity towards environmental changes such as humidity and temperature. More importantly, the attachment of sensitive materials that induce strain and change in the refractive index (RI) are essential for manipulating FBG as a humidity sensor. Hence, this research aims at studying the effect of synthesizing zinc oxide (ZnO) nano structures on a micro-FBG surface using the hydrothermal method. The energy efficient and low cost hydrothermal method resulted in a successful growth of the ZnO nanostructures. Due to the flexibility of the hydrothermal method in controlling the ZnO morphology, through modifications in the seeding technique and the growth process, a highly oriented ZnO nanorod arrays were successfully obtained. Based on the relative humidity (RH) sensor experiments, the ZnO nanorods coating generally exhibited a higher increase in sensitivity of 100% compared to that of the ZnO nanostructures coating which is 85%; both of which were measured against their bare counterpart. Owing to the superior performance of ZnO nanorods, its implementation in temperature sensing effectively demonstrated a 24 times improvement from the bare micro-FBG, bringing down the sensor resolution value to 0.02°C from 0.48°C originally.
format	Thesis
qualification_level	Master's degree
author	Mohamad Aris, Aisyah
author_facet	Mohamad Aris, Aisyah
author_sort	Mohamad Aris, Aisyah
title	Microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / Aisyah Mohamad Aris
title_short	Microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / Aisyah Mohamad Aris
title_full	Microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / Aisyah Mohamad Aris
title_fullStr	Microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / Aisyah Mohamad Aris
title_full_unstemmed	Microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / Aisyah Mohamad Aris
title_sort	microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / aisyah mohamad aris
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Electrical Engineering
publishDate	2018
url	https://ir.uitm.edu.my/id/eprint/37660/1/37660.pdf
_version_	1783734435804348416

Microfiber bragg grating sensor employing zinc oxide nanostructures and nanorods for environmental applications / Aisyah Mohamad Aris

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