SAXS Study of Spatial Homogeneity of Nanoparticle Films via Radial Sample Mapping
Spatial inhomogeneities in drop-cast nanoparticle films illustrate the limitations of single-point SAXS measurements. Using scriptable experiment control and radial sample mapping, this application report shows how the SAXSpoint 700 system enables flexible, sample-tailored experiments. Users can freely adapt measurement strategies to their sample geometry.
Introduction
Drop-cast nanoparticle films are widely used in materials science and nanotechnology due to their simple and versatile preparation. However, the drying process often induces spatial variations in particle distribution and ordering across the film. Even spin coated films can show radial thickness gradients due to solvent evaporation dynamics, viscosity changes, or Marangoni flows.
This application note demonstrates how radial sample mapping can be used to systematically assess spatial homogeneity in drop-cast nanoparticle films and to identify representative regions for detailed SAXS analysis.
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