Resistive humidity sensor made from palm-oil-derived graphene film

Graphene is known to be highly conductive and sensitive to adsorbed molecules thus make it suitable for sensor application. The astonishing properties of graphene attracted the attention to develop ultra-high sensitive sensor with very fast response and recovery time. In this project, a resistive hu...

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Main Author:	Wai, Yin Ling
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/53966/1/WaiYinLingMFKE2015.pdf
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id	my-utm-ep.53966
record_format	uketd_dc
spelling	my-utm-ep.539662020-10-08T05:08:24Z Resistive humidity sensor made from palm-oil-derived graphene film 2015-06 Wai, Yin Ling TK Electrical engineering. Electronics Nuclear engineering Graphene is known to be highly conductive and sensitive to adsorbed molecules thus make it suitable for sensor application. The astonishing properties of graphene attracted the attention to develop ultra-high sensitive sensor with very fast response and recovery time. In this project, a resistive humidity sensor which utilizes graphene as the sensing area has been fabricated and characterized. Different types of graphene samples (i.e. single-layer graphene on copper substrate, single-layer graphene on nickel substrate synthesized using thermal CVD, multi-layers graphene on nickel substrate synthesized using thermal CVD) were used in this project to further investigate the effect of crystallinity of the graphene on its sensing behavior. In order to fabricate the sensor device, the 2-terminals and 4-terminals electrodes configuration was chosen. Sensor fabrication process includes photolithography, copper etching and graphene transfer process. Current-voltage measurement of the fabricated is performed at different relative humidity inside dry box. The result of the resistance of the graphene sample responding towards the change of relative humidity shows an inverse exponential association. Measurement result for different type of graphene are compared to assess the relationship between the crystallinity and sensor performance. 2015-06 Thesis http://eprints.utm.my/id/eprint/53966/ http://eprints.utm.my/id/eprint/53966/1/WaiYinLingMFKE2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85451 masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Wai, Yin Ling Resistive humidity sensor made from palm-oil-derived graphene film
description	Graphene is known to be highly conductive and sensitive to adsorbed molecules thus make it suitable for sensor application. The astonishing properties of graphene attracted the attention to develop ultra-high sensitive sensor with very fast response and recovery time. In this project, a resistive humidity sensor which utilizes graphene as the sensing area has been fabricated and characterized. Different types of graphene samples (i.e. single-layer graphene on copper substrate, single-layer graphene on nickel substrate synthesized using thermal CVD, multi-layers graphene on nickel substrate synthesized using thermal CVD) were used in this project to further investigate the effect of crystallinity of the graphene on its sensing behavior. In order to fabricate the sensor device, the 2-terminals and 4-terminals electrodes configuration was chosen. Sensor fabrication process includes photolithography, copper etching and graphene transfer process. Current-voltage measurement of the fabricated is performed at different relative humidity inside dry box. The result of the resistance of the graphene sample responding towards the change of relative humidity shows an inverse exponential association. Measurement result for different type of graphene are compared to assess the relationship between the crystallinity and sensor performance.
format	Thesis
qualification_level	Master's degree
author	Wai, Yin Ling
author_facet	Wai, Yin Ling
author_sort	Wai, Yin Ling
title	Resistive humidity sensor made from palm-oil-derived graphene film
title_short	Resistive humidity sensor made from palm-oil-derived graphene film
title_full	Resistive humidity sensor made from palm-oil-derived graphene film
title_fullStr	Resistive humidity sensor made from palm-oil-derived graphene film
title_full_unstemmed	Resistive humidity sensor made from palm-oil-derived graphene film
title_sort	resistive humidity sensor made from palm-oil-derived graphene film
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/53966/1/WaiYinLingMFKE2015.pdf
_version_	1747817663281758208

Resistive humidity sensor made from palm-oil-derived graphene film

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