Tunable laser interference lithography preparation of plasmonic nanoparticle arrays tailored for SERS

Nestor Gisbert Quilis, Médéric Lequeux, Priyamvada Venugopalan, Imran Khan, Souhir Boujday, Wolfgang Knoll, Marc Lamy De La Chapelle, Jakub Dostalek

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The facile preparation of arrays of plasmonic nanoparticles over a square centimeter surface area is reported. The developed method relies on tailored laser interference lithography (LIL) that is combined with dry etching and it offers means for the rapid fabrication of periodic arrays of metallic nanostructures with well controlled morphology. Adjusting the parameters of the LIL process allows for the preparation of arrays of nanoparticles with a diameter below hundred nanometers independently of their lattice spacing. Gold nanoparticle arrays were precisely engineered to support localized surface plasmon resonance (LSPR) with different damping at desired wavelengths in the visible and near infrared part of the spectrum. The applicability of these substrates for surface enhanced Raman scattering is demonstrated where cost-effective, uniform and reproducible substrates are of paramount importance. The role of deviations in the spectral position and the width of the LSPR band affected by slight variations of plasmonic nanostructures is discussed.
    Original languageEnglish
    Pages (from-to)10268-10276
    Number of pages9
    JournalNanoscale
    Volume10
    DOIs
    Publication statusPublished - 2018

    Research Field

    • Biosensor Technologies

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