Small Angle X-Ray Scattering (SAXS) method appeared to be very useful in the structure characterisation of materials which are inhomogeneous in nanoscale. Some possible applications of this method are shown. When the scattering regions (particles) are approximately of the same shape but different in size (like spherical Guinier-Preston zones in Al-Ag alloy) then size distribution of scattering particles can be determined. On the other hand the structure of most porous materials is quite complex and disordered. When the structure of scattering regions has the property of self-similarity then fractal geometry can be applied for the description of this structure. Such cases were observed for different type of dry gels (aerogels, xerogels), carbonaceous materials, electrodeposited materials.
This work is financially supported by State Committee for Scientific Research (grant PBZ/KBN 013/T08/10)