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Sensitivity modelling of graphene nanoscroll-based NO2 gas sensors

Graphene nanoscrolls (GNSs) as a new category of quasi one-dimensional (1D) belong to the carbon-based nanomaterials, which have recently captivated the attention of researchers. The latest discoveries of exceptional structural and electronic properties of GNSs like high mobility, controllable band...

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Main Authors: Khaledian, Mohsen, Ismail, Razali, Saeidmanesh, Mehdi, Ghadiry, Mahdiar Hossein, Akbari, Elnaz
Format: Article
Published: Springer New York 2015
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utm.my/id/eprint/55010/
http://dx.doi.org/10.1007/s11468-015-9905-6
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spelling my.utm.550102016-08-24T07:14:01Z http://eprints.utm.my/id/eprint/55010/ Sensitivity modelling of graphene nanoscroll-based NO2 gas sensors Khaledian, Mohsen Ismail, Razali Saeidmanesh, Mehdi Ghadiry, Mahdiar Hossein Akbari, Elnaz TK Electrical engineering. Electronics Nuclear engineering Graphene nanoscrolls (GNSs) as a new category of quasi one-dimensional (1D) belong to the carbon-based nanomaterials, which have recently captivated the attention of researchers. The latest discoveries of exceptional structural and electronic properties of GNSs like high mobility, controllable band gap, and tunable core size have become a great stimuli for graphene researchers. Due to the importance and critical role of nanoscale sensors and biosensors in medical facilities and human life, using a promising material like graphene has been widely studied to achieve better accuracy and sensitivity in these devices. Up until now, the majority of surveys conducted previously have focused on experimental studies for sensors family. Therefore, there is lake of analytical models in comparison to experimental surveys. In order to start and understand about the modelling of gas sensors structure, the field effect transistor(FET)-based structure is employed as a basic. In this study, graphene nanoscroll conductivity has been evaluated under the impacts which is induced by the adsorption of different values of NO2 gas concentration on GNS surface. So that, when GNS-gas sensor is exposed to NO2 gas molecules, the carrier concentration of GNS is changed which leads to the changes in the conductance, and consequently, in the current, this phenomenon is considered as sensing mechanism. The I–V characteristic of graphene nanoscroll-based gas sensor has been considered as a criterion to detect the effect of gas adsorption. In order to verify the accuracy of the proposed model, the results have been compared with the existing experimental works. Springer New York 2015-03-03 Article PeerReviewed Khaledian, Mohsen and Ismail, Razali and Saeidmanesh, Mehdi and Ghadiry, Mahdiar Hossein and Akbari, Elnaz (2015) Sensitivity modelling of graphene nanoscroll-based NO2 gas sensors. Plasmonics, 10 (5). pp. 1133-1140. ISSN 1557-1955 http://dx.doi.org/10.1007/s11468-015-9905-6 DOI:10.1007/s11468-015-9905-6
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Khaledian, Mohsen
Ismail, Razali
Saeidmanesh, Mehdi
Ghadiry, Mahdiar Hossein
Akbari, Elnaz
Sensitivity modelling of graphene nanoscroll-based NO2 gas sensors
description Graphene nanoscrolls (GNSs) as a new category of quasi one-dimensional (1D) belong to the carbon-based nanomaterials, which have recently captivated the attention of researchers. The latest discoveries of exceptional structural and electronic properties of GNSs like high mobility, controllable band gap, and tunable core size have become a great stimuli for graphene researchers. Due to the importance and critical role of nanoscale sensors and biosensors in medical facilities and human life, using a promising material like graphene has been widely studied to achieve better accuracy and sensitivity in these devices. Up until now, the majority of surveys conducted previously have focused on experimental studies for sensors family. Therefore, there is lake of analytical models in comparison to experimental surveys. In order to start and understand about the modelling of gas sensors structure, the field effect transistor(FET)-based structure is employed as a basic. In this study, graphene nanoscroll conductivity has been evaluated under the impacts which is induced by the adsorption of different values of NO2 gas concentration on GNS surface. So that, when GNS-gas sensor is exposed to NO2 gas molecules, the carrier concentration of GNS is changed which leads to the changes in the conductance, and consequently, in the current, this phenomenon is considered as sensing mechanism. The I–V characteristic of graphene nanoscroll-based gas sensor has been considered as a criterion to detect the effect of gas adsorption. In order to verify the accuracy of the proposed model, the results have been compared with the existing experimental works.
format Article
author Khaledian, Mohsen
Ismail, Razali
Saeidmanesh, Mehdi
Ghadiry, Mahdiar Hossein
Akbari, Elnaz
author_facet Khaledian, Mohsen
Ismail, Razali
Saeidmanesh, Mehdi
Ghadiry, Mahdiar Hossein
Akbari, Elnaz
author_sort Khaledian, Mohsen
title Sensitivity modelling of graphene nanoscroll-based NO2 gas sensors
title_short Sensitivity modelling of graphene nanoscroll-based NO2 gas sensors
title_full Sensitivity modelling of graphene nanoscroll-based NO2 gas sensors
title_fullStr Sensitivity modelling of graphene nanoscroll-based NO2 gas sensors
title_full_unstemmed Sensitivity modelling of graphene nanoscroll-based NO2 gas sensors
title_sort sensitivity modelling of graphene nanoscroll-based no2 gas sensors
publisher Springer New York
publishDate 2015
url http://eprints.utm.my/id/eprint/55010/
http://dx.doi.org/10.1007/s11468-015-9905-6
_version_ 1643653665698873344
score 13.211869

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