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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my.utm.539662020-10-08T05:08:24Z http://eprints.utm.my/id/eprint/53966/ Resistive humidity sensor made from palm-oil-derived graphene film 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 NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/53966/1/WaiYinLingMFKE2015.pdf Wai, Yin Ling (2015) Resistive humidity sensor made from palm-oil-derived graphene film. Masters thesis, Universiti Teknologi Malaysia, Faculty of Electrical Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85451 |
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TK Electrical engineering. Electronics Nuclear engineering Wai, Yin Ling Resistive humidity sensor made from palm-oil-derived graphene film |
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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 |
author |
Wai, Yin Ling |
author_facet |
Wai, Yin Ling |
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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 |
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2015 |
url |
http://eprints.utm.my/id/eprint/53966/1/WaiYinLingMFKE2015.pdf http://eprints.utm.my/id/eprint/53966/ http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85451 |
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13.18916 |