ArticleNanomaterials (Basel, Switzerland)2023
The Geometry of Nanoparticle-on-Mirror Plasmonic Nanocavities Impacts Surface-Enhanced Raman Scattering Backgrounds.
Article in Nanomaterials (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Light-Matter Interaction in Nano Systems: Fundamentals and Applications.Nanomaterials (Basel, Switzerland) · 2026Article
- When Light Drives Discovery: Plasmonics at the Frontier of Energy Materials.Chemistry of materials : a publication of the American Chemical Society · 2026Review
- High-Efficiency SERS of 4-Mercaptobenzoic Acid and Biphenyl-4,4'-Dithiol via Nanoparticle-on-Mirror Plasmonic Nanocavities.Nanomaterials (Basel, Switzerland) · 2025Article
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Authors and funding
10 authors.
Funding
Abstract
Surface-enhanced Raman scattering (SERS) has garnered substantial attention due to its ability to achieve single-molecule sensitivity by utilizing metallic nanostructures to amplify the exceedingly weak Raman scattering process. However, the introduction of metal nanostructures can induce a background continuum which can reduce the ultimate sensitivity of SERS in ways that are not yet well understood. Here, we investigate the impact of laser irradiation on both Raman scattering and backgrounds from self-assembled monolayers within nanoparticle-on-mirror plasmonic nanocavities with variable geometry. We find that laser irradiation can reduce the height of the monolayer by inducing an irreversible change in molecular conformation. The resulting increased plasmon confinement in the nanocavities not only enhances the SERS signal, but also provides momentum conservation in the inelastic light scattering of electrons, contributing to the enhancement of the background continuum. The plasmon confinement can be modified by changing the size and the geometry of nanoparticles, resulting in a nanoparticle geometry-dependent background continuum in SERS. Our work provides new routes for further modifying the geometry of plasmonic nanostructures to improve SERS sensitivity.
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