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Enzo Di Fabrizio
Enzo Di Fabrizio
Slovak republic
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Research Article
Graphene: A Building Foundation for Efficient Plasmonic SERS Device
Author(s): Gobind Das, Manola Moretti, Bruno Torre, Marco Allione, Andrea Giugni and Enzo Di FabrizioGobind Das, Manola Moretti, Bruno Torre, Marco Allione, Andrea Giugni and Enzo Di Fabrizio
In this paper graphene over SiO2/Si substrate was used as a building base to fabricate SERS device. A thin film of silver was deposited over graphene and annealed at 250°C. The substrate was examined after chemisorption of two molecules; rhodamine 6G which is a fluorescent dye, and 3-mercaptobenzoic acid, a thiol molecule. SERS enhancement factor for the proposed device is estimated to be 2.1 × 106 with respect to the flat silver substrate deposited over Si. The experimental results were compared in two ways: a) by using electromagnetic field calculation and b) quantum mechanical calculation derived from density function theory. The experimental findings were consistent with the theoretical observations. .. View More»
DOI: 10.4172/2161-1009.1000310