Fig. 1: Ultrafast carrier dynamics of gold nanoparticles (NPs) gained by optical spectroscopy.
From: The dynamics of plasmon-induced hot carrier creation in colloidal gold
A Illustration of the theorised plasmonic resonance decay mechanism, including hypothesized time constants for each process. B Transmission electron microscopy (TEM) image of a characteristic Au NP of this study. Inset shows a higher-resolution TEM image, revealing the particle’s high crystallinity. C Transient absorption spectroscopy of Au NPs excited at 535 nm with 1.67 mJ/cm2, depicting the characteristic bleach signal and the two positive winglets. D Excitation power-dependent bleach recovery dynamics. Kinetic traces extracted at 500 nm (horizontal dashed line in (C) with double-exponential fits, shown across varying laser fluences.
