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Surface Plasmon Resonances of Metallic Nanostars/Nanoflowers for Surface-Enhanced Raman Scattering

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Abstract

We investigate theoretically the optical properties associated to plasmon resonances of metal nanowires with cross section given by low-order Chebyshev nanoparticles (like rounded-tip nanostars or nanoflowers). The impact of the nanoflower shape is analyzed for varying symmetry and deformation parameter through the spectral dependence of resonances and their corresponding near field distributions. Large field intensity enhancements are obtained at the gaps between petals, apart from the tips themselves, which make these nanostars/nanoflowers specially suitable to host molecules for surface-enhanced Raman scattering sensing applications.

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Acknowledgements

This work was supported by the Spanish MICINN (grants FIS2006-07894 and Consolider-Ingenio 2010 EMET CSD2008-00066) and the Comunidad de Madrid (grant MICROSERES S-0505/TIC-0191).

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Author notes

  1. Vincenzo Giannini

    Present address: Center for Nanophotonics, FOM Institute AMOLF, c/o Philips Research Laboratories, High Tech Campus 4, 5656 AE, Eindhoven, The Netherlands

Authors and Affiliations

  1. Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Científicas, Serrano 121, 28006, Madrid, Spain

    Vincenzo Giannini, Rogelio Rodríguez-Oliveros & Jose A. Sánchez-Gil

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  1. Vincenzo Giannini
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  2. Rogelio Rodríguez-Oliveros
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  3. Jose A. Sánchez-Gil
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Correspondence to Jose A. Sánchez-Gil.

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Giannini, V., Rodríguez-Oliveros, R. & Sánchez-Gil, J.A. Surface Plasmon Resonances of Metallic Nanostars/Nanoflowers for Surface-Enhanced Raman Scattering. Plasmonics 5, 99–104 (2010). https://doi.org/10.1007/s11468-009-9121-3

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  • DOI: https://doi.org/10.1007/s11468-009-9121-3

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