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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 23 — Nov. 8, 2010
  • pp: 23790–23795

Tip-enhanced Raman scattering from bridged nanocones

Satish Rao, Mikko J. Huttunen, Juha M. Kontio, Jouni Makitalo, Milla-Riina Viljanen, Janne Simonen, Martti Kauranen, and Dmitri Petrov  »View Author Affiliations


Optics Express, Vol. 18, Issue 23, pp. 23790-23795 (2010)
http://dx.doi.org/10.1364/OE.18.023790


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Abstract

We present two silver nanocones separated by 450 nm, well beyond the typical gap spacing of coupled nanoantennas, and connected by a metal bridge to facilitate plasmonic coupling between them. The tip-enhanced Raman scattering from crystal violet molecules is found to be almost an order of magnitude higher from the bridged cones than from individual cones. This result is supported by local-field calculations of the two types of structures. The bridged nanocones are easily fabricated by a nanoimprint-based process, thus offering a faster and simpler approach compared to other fabrication techniques.

© 2010 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(240.6695) Optics at surfaces : Surface-enhanced Raman scattering
(240.3990) Optics at surfaces : Micro-optical devices

ToC Category:
Optics at Surfaces

History
Original Manuscript: September 17, 2010
Revised Manuscript: October 21, 2010
Manuscript Accepted: October 25, 2010
Published: October 27, 2010

Virtual Issues
Vol. 6, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Satish Rao, Mikko J. Huttunen, Juha M. Kontio, Jouni Makitalo, Milla-Riina Viljanen, Janne Simonen, Martti Kauranen, and Dmitri Petrov, "Tip-enhanced Raman scattering from bridged nanocones," Opt. Express 18, 23790-23795 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-23-23790


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