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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 8 — Apr. 15, 2014
  • pp: 2334–2337

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

A. Mcleod, K. C. Vernon, A. E. Rider, and K. Ostrikov  »View Author Affiliations


Optics Letters, Vol. 39, Issue 8, pp. 2334-2337 (2014)
http://dx.doi.org/10.1364/OL.39.002334


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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 surface enhanced Raman spectroscopy (SERS) hotspots are obtained. The nanoparticles are modeled as 8 nm diameter spheres atop 1.5 nm (five 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 the number of atomic carbon layers can control separation. These results provide further insights and contribute to the development of next-generation plasmonic devices based on nanostructures with hybrid dimensionality.

© 2014 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(310.6860) Thin films : Thin films, optical properties
(250.5403) Optoelectronics : Plasmonics
(240.6695) Optics at surfaces : Surface-enhanced Raman scattering

ToC Category:
Optoelectronics

History
Original Manuscript: January 24, 2014
Revised Manuscript: March 10, 2014
Manuscript Accepted: March 11, 2014
Published: April 8, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

Citation
A. Mcleod, K. C. Vernon, A. E. Rider, and K. Ostrikov, "Optical coupling of gold nanoparticles on vertical graphenes to maximize SERS response," Opt. Lett. 39, 2334-2337 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-8-2334


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