Numerical analysis on DNA-sensor based on copper-graphene surface plasmon resonance
This paper numerically presents a highly sensitive surface plasmon resonance (SPR) graphene-based biosensor by taking high adsorption efficiency of graphene into consideration. The pi-stacking interaction between carbon-based hexagonal structure of graphene with carbon-based ring biomolecules such a...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/62130/1/AnthonyEdwardRobert2015_NumericalAnalysisonDNASensorBasedonCopper.pdf http://eprints.utm.my/id/eprint/62130/ https://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=33739 |
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| Institution: | Universiti Teknologi Malaysia |
| Language: | English |
| Summary: | This paper numerically presents a highly sensitive surface plasmon resonance (SPR) graphene-based biosensor by taking high adsorption efficiency of graphene into consideration. The pi-stacking interaction between carbon-based hexagonal structure of graphene with carbon-based ring biomolecules such as single-stranded DNA is the key factor behind this efficiency. Graphene layers added to a conventional copper SPR biosensor causes a drastic sensitivity enhancement. In comparison to conventional SPR sensors this produces a larger change in the refractive index at the metal-dielectric interface. The light reflection coupled into a SPR mode propagating along a coppergraphene layer is calculated and compared to a conventional SPR sensor. The proposed SPR sensor could then not only be applied for highly sensitive but also for cheap DNA-biosensor. |
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