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Issue 41, 2015
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Surface-enhanced Raman scattering from AgNP–graphene–AgNP sandwiched nanostructures

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Abstract

We developed a facile approach toward hybrid AgNP–graphene–AgNP sandwiched structures using self-organized monolayered AgNPs from wet chemical synthesis for the optimized enhancement of the Raman response of monolayer graphene. We demonstrate that the Raman scattering of graphene can be enhanced 530 fold in the hybrid structure. The Raman enhancement is sensitively dependent on the hybrid structure, incident angle, and excitation wavelength. A systematic simulation is performed, which well explains the enhancement mechanism. Our study indicates that the enhancement resulted from the plasmonic coupling between the AgNPs on the opposite sides of graphene. Our approach towards ideal substrates offers great potential to produce a “hot surface” for enhancing the Raman response of two-dimensional materials.

Graphical abstract: Surface-enhanced Raman scattering from AgNP–graphene–AgNP sandwiched nanostructures

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Publication details

The article was received on 06 Jul 2015, accepted on 22 Sep 2015 and first published on 23 Sep 2015


Article type: Paper
DOI: 10.1039/C5NR04500B
Nanoscale, 2015,7, 17529-17537

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    Surface-enhanced Raman scattering from AgNP–graphene–AgNP sandwiched nanostructures

    J. Wu, Y. Xu, P. Xu, Z. Pan, S. Chen, Q. Shen, L. Zhan, Y. Zhang and W. Ni, Nanoscale, 2015, 7, 17529
    DOI: 10.1039/C5NR04500B

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