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Xuanhua Li, Wallace C. H. Choy, Xingang Ren, Di Zhang and Haifei Lu Highly Intensified Surface Enhanced Raman Scattering by Using Monolayer Graphene as the Nanospacer of Metal Film–Metal Nanoparticle Coupling System Advanced Functional Materials 24

Version of Record online: 28 JAN 2014 | DOI: 10.1002/adfm.201303384

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A novel metal NPs–metal film coupling system (G(graphene)–NFG) is demonstrated by introducing ultrathin monolayer graphene as well-defined sub-nanospacer between Ag NPs and Ag film. These results show that the G–NFG system offers tremendous near-field enhancement with one of the highest enhancement ratio (1700) reported to date in the graphene–metal plasmonic combination system and an additional chemical enhancement from the graphene sub-nanospacer.

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