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Journal Articles Chemical Physics Letters Year : 2006

Surface enhanced Raman scattering on gold nanowire arrays: Evidence of strong multipolar surface plasmon resonance enhancement

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Abstract

The SERS efficiency of gold nanowires arrays elaborated by electron beam lithography and lift-off technique efficiency is investigated by depositing a molecular probe (BPE) trans-1,2-bis(4-pyridyl)ethylen on the arrays and using an excitation wavelength of 632.8 nm. The observation of the dependence of the Raman enhancement versus the nanowire length is clearly demonstrated and remarkably a maximum enhancement is observed. For such arrays, we also show clearly that odd multipolar localised surface plasmon modes (up to seventh-order) exhibits a stronger efficiency than the first dipolar order in SERS process.

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hal-02369842 , version 1 (19-11-2019)

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Laurent Billot, Marc Lamy de La Chapelle, Anne-Sophie Grimault, Alexandre Vial, Dominique Barchiesi, et al.. Surface enhanced Raman scattering on gold nanowire arrays: Evidence of strong multipolar surface plasmon resonance enhancement. Chemical Physics Letters, 2006, 422 (4-6), pp.303-307. ⟨10.1016/j.cplett.2006.02.041⟩. ⟨hal-02369842⟩

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