Speaker
Dr
Hossein Siadati
(K.N. Toosi University of Technology)
Description
Small angle x-ray scattering (SAXS) is used to study structures of size about 10 Å or larger, in particular, the shape and fractal nature of particles. The Guinier law allows determination of the radius of gyration Rg of a particle of unknown shape and size. Radius of gyration is the root-mean-square distance of all points in the particle from its center of mass. The Porod law, on the other hand, allows determination of the shape of the object, along with its fractal nature. In three separate studies, these values were determined for some catalysts, graphene nanoplatelets, and hydroxyapatite nanoparticles using SAXS data.
