Fig. 5: Microstructure of synthesized pigments.
From: Assessment of process variability and color in synthesized and ancient Egyptian blue pigments
AR2 is depicted above in (a–c) and MR2 below in (d–f). a, d represent SEM-EDS compositional images superimposed on BSE images of a polished particle cross-section where Ca, Cu, and Na are represented by red, green, and blue pixels, respectively. B and E are comprised of single element images for Ca, Si, Cu, and Na shown using a rainbow intensity color scale (blue to green to red for increasing intensity), and c, f show virtual slices extracted from a nano-CT 3D volume. Label notation: SiO2 – silica polymorph, Cuv – cuprorivaite, Wo – wollastonite, and gl – silicate glass.
