Tutorials

This page provides tutorials (basic and advanced) to help GISAXS users with experiment design, data analysis, and data modeling:

Slides from Presentations

• Theory of GISAXS, Zhang Jiang (Advanced Photon Source, Argonne National Laboratory): Introduction to the theoretical methods required for correctly analyzing and modeling GISAXS data, including the DWBA and waveguide effects.
• GIXS: hands-on data analysis, Joe Strzalka (Advanced Photon Source, Argonne National Laboratory): An introduction to practical aspects of interpreting and analyzing grazing-incidence data, including the use of GIXSGUI software.
• GISAXS/GIWAXS Data Analysis: Thinking in Reciprocal-Space, Kevin Yager (National Synchrotron Light Source and Center for Functional Nanomaterials, Brookhaven National Laboratory): An introduction to the interpretation and basic analysis of GISAXS data, in particular in relation to the concept of how the experiment probes a slice through the 3D reciprocal-space.
• Synchrotron Scattering for Study of Soft Systems, Kevin Yager (National Synchrotron Light Source and Center for Functional Nanomaterials, Brookhaven National Laboratory): An brief tutorial/introduction to how x-ray scattering functions. Selected examples of using SAXS and GISAXS to study soft and hybrid systems is then presented. Finally, a few emerging methods are presented, to demonstrate how to go beyond conventional scattering approaches.
• GISAS Data Analysis with BornAgain, Walter Van Herck (Jülich Centre for Neutron Science JCNS, Germany): Description of how to use the BornAgain software for quantitatively modeling and fitting GISAXS data.
• High performance GISAXS, Alexander Hexemer (Advanced Light Source, Lawrence Berkeley National Laboratory): Description of recent developments in the high-throughput and high-performance modeling of GISAXS data, in particular describing the HipGISAXS software.

Frequently Asked Questions

• What are the sample/substrate requirements for GISAXS?
• How long does it take to measure a sample?
  • Do I need to worry about beam damage?
• What do I do with my data?
  • Qualitative inspection
    • Scattering features
  • Linecuts
  • Background subtraction
  • Peak Indexing
  • Modeling
  • Data Fitting
• What software is available for analysis?
• Why does sample orientation matter?
• What's that missing wedge (near qz axis) in my processed data?
• GISAXS is complicated. Why not just do microscopy?

Data Analysis

• Scattering models
• Polymer clustering or gel mesh size from SANS
• Orientation analysis (using P3HT as an example)
• Particle spacing from peak position

Scaling Analysis

• Porod plot (Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \scriptstyle I \sim q^{-4}} )
• Fresnel plot (Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \scriptstyle R \sim q^{-4}} )
• Kratky plot (Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \scriptstyle I \sim q^{-2}} )
• Debye scaling (Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \scriptstyle I \sim q^{-2}} )
• Rod-like scaling (Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \scriptstyle I \sim q^{-1}} )
• Guinier plot (Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \scriptstyle \ln(I) \sim 1 - (R_g^2/3)q^{2} } )
• Zimm plot

Experimental Help

• GISAXS alignment
• Grating alignment

Miscellaneous Questions

• What's the difference between scattering and diffraction? SAXS and WAXS?
• Why are there oscillations below the critical angle in my reflectivity curve?

See Also

• Useful Literature
• Useful Links
• Technical articles