Analytical modelling of monolayer graphene-based ion-sensitive FET to pH changes
Graphene has attracted great interest because of unique properties such as high sensitivity, high mobility, and biocompatibility. It is also known as a superior candidate for pH sensing. Graphene-based ion-sensitive field-effect transistor (ISFET) is currently getting much attention as a novel mater...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen Journal
2013
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| Online Access: | http://eprints.utm.my/50443/1/MohammadTaghiAhmadi2013_Analyticalmodellingofmonolayer.pdf |
| _version_ | 1796859481095667712 |
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| author | Che Harun, Fauzan Khairi Kiani, Mohammad Javad Ahmadi, Mohammad Taghi Feiz Abadi, Hediyeh Karimi Rahmani, Meisam Hashim, Amin |
| author_facet | Che Harun, Fauzan Khairi Kiani, Mohammad Javad Ahmadi, Mohammad Taghi Feiz Abadi, Hediyeh Karimi Rahmani, Meisam Hashim, Amin |
| author_sort | Che Harun, Fauzan Khairi |
| collection | ePrints |
| description | Graphene has attracted great interest because of unique properties such as high sensitivity, high mobility, and biocompatibility. It is also known as a superior candidate for pH sensing. Graphene-based ion-sensitive field-effect transistor (ISFET) is currently getting much attention as a novel material with organic nature and ionic liquid gate that is intrinsically sensitive to pH changes. pH is an important factor in enzyme stabilities which can affect the enzymatic reaction and broaden the number of enzyme applications. More accurate and consistent results of enzymes must be optimized to realize their full potential as catalysts accordingly. In this paper, a monolayer graphene-based ISFET pH sensor is studied by simulating its electrical measurement of buffer solutions for different pH values. Electrical detection model of each pH value is suggested by conductance modelling of monolayer graphene. Hydrogen ion (H+) concentration as a function of carrier concentration is proposed, and the control parameter (Ƥ) is defined based on the electro-active ions absorbed by the surface of the graphene with different pH values. Finally, the proposed new analytical model is compared with experimental data and shows good overall agreement |
| first_indexed | 2024-03-05T19:27:48Z |
| format | Article |
| id | utm.eprints-50443 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T19:27:48Z |
| publishDate | 2013 |
| publisher | SpringerOpen Journal |
| record_format | dspace |
| spelling | utm.eprints-504432018-10-31T12:39:04Z http://eprints.utm.my/50443/ Analytical modelling of monolayer graphene-based ion-sensitive FET to pH changes Che Harun, Fauzan Khairi Kiani, Mohammad Javad Ahmadi, Mohammad Taghi Feiz Abadi, Hediyeh Karimi Rahmani, Meisam Hashim, Amin TK Electrical engineering. Electronics Nuclear engineering Graphene has attracted great interest because of unique properties such as high sensitivity, high mobility, and biocompatibility. It is also known as a superior candidate for pH sensing. Graphene-based ion-sensitive field-effect transistor (ISFET) is currently getting much attention as a novel material with organic nature and ionic liquid gate that is intrinsically sensitive to pH changes. pH is an important factor in enzyme stabilities which can affect the enzymatic reaction and broaden the number of enzyme applications. More accurate and consistent results of enzymes must be optimized to realize their full potential as catalysts accordingly. In this paper, a monolayer graphene-based ISFET pH sensor is studied by simulating its electrical measurement of buffer solutions for different pH values. Electrical detection model of each pH value is suggested by conductance modelling of monolayer graphene. Hydrogen ion (H+) concentration as a function of carrier concentration is proposed, and the control parameter (Ƥ) is defined based on the electro-active ions absorbed by the surface of the graphene with different pH values. Finally, the proposed new analytical model is compared with experimental data and shows good overall agreement SpringerOpen Journal 2013 Article PeerReviewed application/pdf en http://eprints.utm.my/50443/1/MohammadTaghiAhmadi2013_Analyticalmodellingofmonolayer.pdf Che Harun, Fauzan Khairi and Kiani, Mohammad Javad and Ahmadi, Mohammad Taghi and Feiz Abadi, Hediyeh Karimi and Rahmani, Meisam and Hashim, Amin (2013) Analytical modelling of monolayer graphene-based ion-sensitive FET to pH changes. Nanoscale Research Letters, 8 . ISSN 1931-7573 https://doi.org/10.1186/1556-276X-8-173 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Che Harun, Fauzan Khairi Kiani, Mohammad Javad Ahmadi, Mohammad Taghi Feiz Abadi, Hediyeh Karimi Rahmani, Meisam Hashim, Amin Analytical modelling of monolayer graphene-based ion-sensitive FET to pH changes |
| title | Analytical modelling of monolayer graphene-based ion-sensitive FET to pH changes |
| title_full | Analytical modelling of monolayer graphene-based ion-sensitive FET to pH changes |
| title_fullStr | Analytical modelling of monolayer graphene-based ion-sensitive FET to pH changes |
| title_full_unstemmed | Analytical modelling of monolayer graphene-based ion-sensitive FET to pH changes |
| title_short | Analytical modelling of monolayer graphene-based ion-sensitive FET to pH changes |
| title_sort | analytical modelling of monolayer graphene based ion sensitive fet to ph changes |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.utm.my/50443/1/MohammadTaghiAhmadi2013_Analyticalmodellingofmonolayer.pdf |
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