Fig. 6: SAXS data modeling to follow the assembly of CoO nanocrystals.
From: X-ray studies bridge the molecular and macro length scales during the emergence of CoO assemblies
a Small-angle X-ray scattering (SAXS) intensities I(q) of CoO assemblies for different reaction times. Dashed curves: calculated intensities for homogeneous spherical assemblies. Superimposed bold curves indicate the least-squares fitting range. Dotted lines: power laws describing the contributions of compact particle shape (q−4) and corrugated surface (q−2) on the different length scales. An intermediate region is emphasized by vertical gray lines. b Comparison of size evolution over time of polyhedra (spherical particle diameter obtained from in situ pair distribution functions (PDF)) and assemblies (obtained from SAXS). Here, the error bars indicate the polydispersity of the assemblies. c Average number of crystallites per assembly obtained from average assembly size in b assuming that they are built from densely packed spherical units with a filled volume fraction of 74%. Here, the error bars result from the error propagation of the average assembly sizes (SAXS) and of the standard deviation of the crystallite sizes (PDF) in b.
