surface-analysis

# Surface Analysis Skill ## Purpose The Surface Analysis skill provides comprehensive capabilities for characterizing material surfaces, enabling detailed analysis of surface composition, chemical bonding states, topography, and interfacial properties critical for understanding surface-sensitive phenomena. ## Capabilities - XPS depth profiling and chemical state analysis - AFM imaging and roughness quantification - Contact angle measurement and surface energy calculation - Profilometry data analysis - Surface contamination identification - Tribological surface analysis - Coating thickness measurement - Adhesion mechanism analysis ## Usage Guidelines ### X-ray Photoelectron Spectroscopy (XPS) 1. **Survey Spectra** - Acquire wide scan (0-1200 eV) for elemental identification - Identify all elements present above detection limit (~0.1 at%) - Note adventitious carbon for charge referencing 2. **High-Resolution Spectra** - Acquire narrow scans for elements of interest - Use appropriate pass energy (20-50 eV typical) - Ensure sufficient signal-to-noise for peak fitting 3. **Peak Fitting** - Apply Shirley or linear background - Constrain FWHM and peak shape within physical limits - Assign chemical states from binding energy shifts 4. **Depth Profiling** - Use Ar+ sputtering for inorganic materials - Consider cluster ions (Ar-cluster, C60) for organics - Monitor for preferential sputtering and mixing ### Atomic Force Microscopy (AFM) 1....