Contact Angle Analyzer

Purpose

The Contact Angle Analyzer skill provides comprehensive wettability analysis for nanomaterial surfaces, enabling determination of surface energy components and characterization of hydrophobic/hydrophilic properties.

Capabilities

• Static contact angle measurement
• Dynamic advancing/receding angles
• Surface energy calculation (Owens-Wendt, van Oss)
• Wilhelmy plate analysis
• Surface roughness correlation
• Superhydrophobic/superhydrophilic assessment

Usage Guidelines

Wettability Analysis

1. Contact Angle Measurement

   • Use consistent droplet volume (2-5 uL)
   • Allow equilibration before measurement
   • Report average of multiple measurements

2. Surface Energy Calculation

   • Use multiple probe liquids
   • Apply Owens-Wendt for dispersive/polar
   • Use van Oss for acid-base analysis

3. Surface Classification

   • Hydrophilic: theta < 90 degrees
   • Hydrophobic: theta > 90 degrees
   • Superhydrophobic: theta > 150 degrees

Process Integration

• Nanomaterial Surface Functionalization Pipeline
• Thin Film Deposition Process Optimization

Input Schema

{
  "sample_id": "string",
  "probe_liquids": ["water", "diiodomethane", "formamide"],
  "measurement_type": "static|dynamic|wilhelmy",
  "surface_roughness": "number (nm, optional)"
}

Output Schema

{
  "contact_angles": [{
    "liquid": "string",
    "angle": "number (degrees)",
    "std_dev": "number"
  }],
  "surface_energy": {
    "total": "number (mJ/m2)",
    "dispersive": "number (mJ/m2)",
    "polar": "number (mJ/m2)"
  },
  "wettability_class": "string"
}