Fig. 6: Individual optical response from all 1000 Cu particles.
a Integrated CO2 production measured by the QMS from the well-mixed reactor during the stepwise increase of nominal inlet O2 concentration depicted as the shaded background. The inset depicts the reactor geometry and indicates the position of the color-coded particle patches. Arrows depict reactant flow direction. b Scattering intensity time evolution from the individual nanoparticles in each patch (color-coded to the left). Each patch subset contains ~100 individual lines corresponding to a single particle in the patch. The orange markers indicate the oxidation time, τox, defined as the time when each particle’s scattering intensity has decreased to 50% of the initial level. c, d The same as (a, b) but for the plug-flow reactor. The scattering intensity in each individual particle trace has been normalized to its initial intensity and minimum intensity after oxidation, to facilitate direct comparison between particles.
