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

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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https://hal-utt.archives-ouvertes.fr/hal-02369842
Contributor : Jean-Baptiste Vu Van <>
Submitted on : Tuesday, November 19, 2019 - 11:03:05 AM
Last modification on : Friday, March 27, 2020 - 4:28:02 PM

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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, Elsevier, 2006, 422 (4-6), pp.303-307. ⟨10.1016/j.cplett.2006.02.041⟩. ⟨hal-02369842⟩

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