Speaker
Description
Laser induced energy transfer and dissipation in nanoparticles within a liquid environment are of specific interest due to their relevance in photochemical and biomedical applications. In particular a quantitative understanding of electron-phonon coupling (EPC) is required for determining the life-time of hot electrons and heat generation. Currently, most related studies are based on optical pump-probe experiments, which only provide information related to electron dynamics. Here, we use time-resolved X-ray scattering at SwissFEL to characterize laser induced structural dynamics in colloidal gold nanoparticles. Our measurements provide direct and quantitative information on structural response, indicating a chemical environment-dependent EPC process.
