Optical coupling of Au nanoparticles on vertical graphenes to maximize SERS response

Mcleod, Angus, Vernon, Kristy C., Rider, Amanda E., & Ostrikov, Kostya (2014) Optical coupling of Au nanoparticles on vertical graphenes to maximize SERS response. Optics Letters, 39(8), pp. 2334-2337.

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Abstract

Gold particle interaction with few-layer graphenes is of interest for the development of numerous optical nanodevices. The results of numerical studies of the coupling of gold nanoparticles with few-layer vertical graphene sheets are presented. The field strengths are computed and the optimum nanoparticle configurations for the formation of SERS hotpots are obtained. The nanoparticles are modeled as 8 nm diameter spheres atop 1.5 nm (5 layers) graphene sheet. The vertical orientation is of particular interest as it is possible to use both sides of the graphene structure and potentially double the number of particles in the system. Our results show that with the addition of an opposing particle a much stronger signal can be obtained as well as the particle separation can be controlled by the number of atomic carbon layers. These results provide further insights and contribute to the development of next-generation plasmonic devices based on nanostructures with hybrid dimensionality.

Impact and interest:

9 citations in Scopus
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10 citations in Web of Science®

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ID Code: 70105
Item Type: Journal Article
Refereed: Yes
DOI: 10.1364/OL.39.002334
ISSN: 0146-9592
Divisions: Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Deposited On: 14 Apr 2014 00:10
Last Modified: 09 Sep 2016 11:57

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