Linking structure and optical properties of plasmonic nanoparticles on tunable spherical surfaces

2024/07/03 by Francesco Brasili, Brasili, Francesco, Angela Capocefalo +18
Materials Science · #FOS: Physical sciences #Gold and Silver Nanoparticles Synthesis and Applications #Optics (physics.optics) #Soft Condensed Matter (cond-mat.soft)

paper · pdf · doi:10.48550/arxiv.2407.03124

openalex publication_date 2024/07/03 · openalex created_date 2024/07/06 · openalex updated_date 2026/07/28

Abstract

The complexation of plasmonic nanoparticles (NPs) and thermoresponsive microgels is widely exploited for applications, but a microscopic description of the mechanisms governing the spatial organization of the NPs is still lacking. Combining small angle X-ray scattering, state-of-the-art simulations and a simple toy model, we uncover how the volume phase transition of microgels controls NP-NP interactions, establishing for the first time a microscopic link between plasmon coupling and NP local structure. Our study paves the way to experimentally investigate phase transitions on controlled curved surfaces at the nanoscale.

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