We study the polarized Surface Enhanced Raman Scattering from randomly oriented molecules adsorbed on near-field coupled gold nanowires. We show that the scattering is polarized always along the wire-to-wire nanocavities. We find the exact angular dependence for the polarized, unpolarized, parallel- and cross-polarized SERS intensity. Finally we develop a model that fits the experimental data and allows to measure the field enhancement and the re-radiation enhancement factors, independently, and retrieve the depolarization ratio of the probe molecules.

Strongly polarized scattering in surface enhanced Raman spectroscopy of randomly distributed molecules on gold nanowires

TOMA, ANDREA;CHIAPPE, DANIELE;MARTELLA, CHRISTIAN;BUATIER DE MONGEOT, FRANCESCO
2011

Abstract

We study the polarized Surface Enhanced Raman Scattering from randomly oriented molecules adsorbed on near-field coupled gold nanowires. We show that the scattering is polarized always along the wire-to-wire nanocavities. We find the exact angular dependence for the polarized, unpolarized, parallel- and cross-polarized SERS intensity. Finally we develop a model that fits the experimental data and allows to measure the field enhancement and the re-radiation enhancement factors, independently, and retrieve the depolarization ratio of the probe molecules.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11567/713567
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