UV–Vis absorbance spectra of PLAL-synthesized Ag, C, and Ag/C hybrid nanoparticles

This dataset contains UV–Vis absorbance spectra of colloidal nanoparticle suspensions synthesized by Pulsed Laser Ablation in Liquid (PLAL) using a Nd:YAG laser (λ = 1064 nm, 9 ns pulse duration, 10 Hz repetition rate) on high-purity silver (Ag) and graphite (C) targets in ultrapure water. The spectra support the Mie-amplification mechanism proposed in the associated publication, wherein intermediate amorphous carbon nanoparticles (CNPs) enhance the dipolar coupling between silver nanoparticles (AgNPs) through their Mie resonances, as described by a Kuramoto–Sakaguchi phase-oscillator framework. Three sample families are included: Pure AgNPs – displays a well-resolved localized surface plasmon resonance (LSPR) band near 400–410 nm. Pure CNPs – featureless broadband absorption characteristic of amorphous carbon (no distinct plasmonic feature). Hybrid AgC colloids – LSPR peak intensifies monotonically with increasing CNP content without measurable red-shift, confirming dielectric Mie-mediated coupling rather than conventional plasmonic hybridization.