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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 17 — Sep. 1, 2012
  • pp: 3603–3605

Double-layered nanoparticle stacks for spectro-electrochemical applications

Pinar Frank, Johannes Srajer, Andreas Schwaighofer, Asmorom Kibrom, and Christoph Nowak  »View Author Affiliations


Optics Letters, Vol. 37, Issue 17, pp. 3603-3605 (2012)
http://dx.doi.org/10.1364/OL.37.003603


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Abstract

Here we present a surface based on double-layered nanoparticle stacks suitable for spectro-electrochemical applications. The structure is formed on a continuous gold layer by a two-dimensional periodic array of stacks of gold and tantalum pentoxide nanodisks. Reflection spectra in the visible wavelength region showed the multiple-resonant nature of surface plasmon (SP) excitations in the nanostructure, which is in good agreement with simulations based on a finite-difference-time-domain method. The multiple SP resonances can be tuned to various wavelength regions, which are required for simultaneous enhancement at excitation and emission wavelengths. Cyclic voltammetry measurements on the nanostructure proved the applicability of electrochemical methods involving interfacial redox processes.

© 2012 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.3910) Physical optics : Metal optics

ToC Category:
Materials

History
Original Manuscript: June 28, 2012
Revised Manuscript: July 20, 2012
Manuscript Accepted: July 20, 2012
Published: August 24, 2012

Citation
Pinar Frank, Johannes Srajer, Andreas Schwaighofer, Asmorom Kibrom, and Christoph Nowak, "Double-layered nanoparticle stacks for spectro-electrochemical applications," Opt. Lett. 37, 3603-3605 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-17-3603


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