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https://doi.org/10.1038/srep37190
Title: | As-grown graphene/copper nanoparticles hybrid nanostructures for enhanced intensity and stability of surface plasmon resonance | Authors: | Li, Y.-F Dong, F.-X Chen, Y Zhang, X.-L Wang, L Bi, Y.-G Tian, Z.-N Liu, Y.-F Feng, J Sun, H.-B |
Issue Date: | 2016 | Citation: | Li, Y.-F, Dong, F.-X, Chen, Y, Zhang, X.-L, Wang, L, Bi, Y.-G, Tian, Z.-N, Liu, Y.-F, Feng, J, Sun, H.-B (2016). As-grown graphene/copper nanoparticles hybrid nanostructures for enhanced intensity and stability of surface plasmon resonance. Scientific Reports 6 : 37190. ScholarBank@NUS Repository. https://doi.org/10.1038/srep37190 | Rights: | Attribution 4.0 International | Abstract: | The transfer-free fabrication of the high quality graphene on the metallic nanostructures, which is highly desirable for device applications, remains a challenge. Here, we develop the transfer-free method by direct chemical vapor deposition of the graphene layers on copper (Cu) nanoparticles (NPs) to realize the hybrid nanostructures. The graphene as-grown on the Cu NPs permits full electric contact and strong interactions, which results in a strong localization of the field at the graphene/copper interface. An enhanced intensity of the localized surface plasmon resonances (LSPRs) supported by the hybrid nanostructures can be obtained, which induces a much enhanced fluorescent intensity from the dye coated hybrid nanostructures. Moreover, the graphene sheets covering completely and uniformly on the Cu NPs act as a passivation layer to protect the underlying metal surface from air oxidation. As a result, the stability of the LSPRs for the hybrid nanostructures is much enhanced compared to that of the bare Cu NPs. The transfer-free hybrid nanostructures with enhanced intensity and stability of the LSPRs will enable their much broader applications in photonics and optoelectronics. © The Author(s) 2016. | Source Title: | Scientific Reports | URI: | https://scholarbank.nus.edu.sg/handle/10635/178755 | ISSN: | 20452322 | DOI: | 10.1038/srep37190 | Rights: | Attribution 4.0 International |
Appears in Collections: | Elements Staff Publications |
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