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arXiv · 2407.03124

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

Francesco Brasili·Angela Capocefalo·Giovanni Del Monte·Rodrigo Rivas-Barbosa·Javier Pérez·Edouard Chauveau·Federico Bordi·Carlo Rizza·Domenico Truzzolillo·Emanuela Zaccarelli·Simona Sennato
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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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Francesco Brasili, Angela Capocefalo, Giovanni Del Monte, Rodrigo Rivas-Barbosa, Javier Pérez, Edouard Chauveau, Federico Bordi, Carlo Rizza, Domenico Truzzolillo, Emanuela Zaccarelli, Simona Sennato. 2024-07-03. Linking structure and optical properties of plasmonic nanoparticles on tunable spherical surfaces. https://arxiv.org/abs/2407.03124

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