Interfacial engineering of plasmonic nanoparticle metasurfaces.
basic_science · Level V
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- Record sourced from PubMed, PMID 35605124.
- Also identified by DOI 10.1073/pnas.2202621119 and PMC identifier 9295783.
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Abstract
SignificanceMolecules interacting with metallic nanostructures can show tunable exciton-plasmon coupling, ranging from weak to strong. One factor that influences the interactions is the spatial organization of the molecules relative to the localized plasmon-enhanced electromagnetic fields. In this work, we show that the arrangement of aromatic dye molecules can be tuned within plasmonic hotspots by interfacial engineering of nanoparticle surfaces. By controlling the local chemical and physical interactions, we could modulate lasing thresholds. Surface-functionalized plasmonic metasurfaces open prospects for programmable light-matter interactions at the nanoscale.