Conductivity measurement of defect induced multilayer graphene for escherichia coli detection
Recently, there has been considerable interest in utilizing graphene for biosensing. Graphene has unique characteristic where the bareness of the graphene allows it to be exposed directly to the aqueous solution. As defect can increase the sensing area and assist the surface’s bio-functionalization,...
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| Format: | Conference or Workshop Item |
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2019
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| _version_ | 1796864935214448640 |
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| author | Morsin, M. Isaak, S. Yusof, Y. |
| author_facet | Morsin, M. Isaak, S. Yusof, Y. |
| author_sort | Morsin, M. |
| collection | ePrints |
| description | Recently, there has been considerable interest in utilizing graphene for biosensing. Graphene has unique characteristic where the bareness of the graphene allows it to be exposed directly to the aqueous solution. As defect can increase the sensing area and assist the surface’s bio-functionalization, hence this paper aims to investigate the biosensing feasibility of defect induced multilayer graphene towards Escherichia coli bacteria detection. Results showed that 10 minutes of incubation time was needed to adsorb E.coli on the graphene surface. In dry measurement, conductivity of the defect induced multilayer graphene decreased but the linearity showed improved range. After the E.coli has been exposed to the defect induced multilayer graphene, the conductivity has been found increased due to the reduction in resistance. This paper showed that the modification on the surface of the graphene can be useful to the sensing application. |
| first_indexed | 2024-03-05T20:49:22Z |
| format | Conference or Workshop Item |
| id | utm.eprints-89969 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:49:22Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | utm.eprints-899692021-03-29T05:57:27Z http://eprints.utm.my/89969/ Conductivity measurement of defect induced multilayer graphene for escherichia coli detection Morsin, M. Isaak, S. Yusof, Y. TK Electrical engineering. Electronics Nuclear engineering Recently, there has been considerable interest in utilizing graphene for biosensing. Graphene has unique characteristic where the bareness of the graphene allows it to be exposed directly to the aqueous solution. As defect can increase the sensing area and assist the surface’s bio-functionalization, hence this paper aims to investigate the biosensing feasibility of defect induced multilayer graphene towards Escherichia coli bacteria detection. Results showed that 10 minutes of incubation time was needed to adsorb E.coli on the graphene surface. In dry measurement, conductivity of the defect induced multilayer graphene decreased but the linearity showed improved range. After the E.coli has been exposed to the defect induced multilayer graphene, the conductivity has been found increased due to the reduction in resistance. This paper showed that the modification on the surface of the graphene can be useful to the sensing application. 2019 Conference or Workshop Item PeerReviewed Morsin, M. and Isaak, S. and Yusof, Y. (2019) Conductivity measurement of defect induced multilayer graphene for escherichia coli detection. In: 2018 IEEE EMBS Conference on Biomedical Engineering and Sciences, IECBES 2018, 3-6 Dec 2018, Borneo Convention Centre Kuching Demak-Isthmus Bridge, Jalan Keruing, Sejingkat Kuching, Malaysia. https://dx.doi.org/10.1109/IECBES.2018.8626610 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Morsin, M. Isaak, S. Yusof, Y. Conductivity measurement of defect induced multilayer graphene for escherichia coli detection |
| title | Conductivity measurement of defect induced multilayer graphene for escherichia coli detection |
| title_full | Conductivity measurement of defect induced multilayer graphene for escherichia coli detection |
| title_fullStr | Conductivity measurement of defect induced multilayer graphene for escherichia coli detection |
| title_full_unstemmed | Conductivity measurement of defect induced multilayer graphene for escherichia coli detection |
| title_short | Conductivity measurement of defect induced multilayer graphene for escherichia coli detection |
| title_sort | conductivity measurement of defect induced multilayer graphene for escherichia coli detection |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| work_keys_str_mv | AT morsinm conductivitymeasurementofdefectinducedmultilayergrapheneforescherichiacolidetection AT isaaks conductivitymeasurementofdefectinducedmultilayergrapheneforescherichiacolidetection AT yusofy conductivitymeasurementofdefectinducedmultilayergrapheneforescherichiacolidetection |