SKILL.md — AFM Force Curve Analyzer

Tool Name

afm-force-curve-analyzer — AFM nanoindentation & force spectroscopy data analyzer

When to Use

When analyzing AFM force-distance curves, nanoindentation data, adhesion maps, or force spectroscopy measured during electrochemical cycling (LSV/CV/CP/CA). Triggers on phrases like:

• "AFM force curve分析"
• "force spectroscopy"
• "nanoindentation"
• "adhesion force"
• "Young's modulus AFM"
• "Sneddon模型"

Analysis Capabilities

• Force-distance (F-D) curve import & preprocessing (baseline subtraction, tip radius correction)
• Young's modulus extraction via Sneddon model (cone/pyramid/spherical indenters)
• Adhesion force (F_ad) & pull-off work calculation
• Multiple indentation models: Hertz, Sneddon (cone/pyramid), JKR, DMT
• Electrochemical potential correlation: modulus/adhesion vs. applied potential
• Deformation recovery analysis (creep/viscoelastic relaxation)
• Force map 2D visualization (adhesion, modulus, deformation)
• Multi-curve statistical comparison (fresh vs. cycled catalyst)
• Built-in reference database: NiOOH/γ-NiOOH/FeOOH/IrO₂/RuO₂/TiO₂/LiCoO₂/Si/Pt/Au

Input Formats

• CSV/XLSX ( Asylum MFP-3D / Bruker Nanoscope / JPK / NT-MDT / Keysight / Park )
• TXT (force curve single file, force map grid CSV)
• NWI (Nanonis)
• SXM (NT-MDT)

Output

• PNG multi-panel dashboard (F-D curves + statistics + potential correlation + 2D map)
• CSV with all extracted parameters
• JSON with metadata
• Markdown summary report

Key Calculations

• Sneddon model: E = (π/2) × F / (δ² × tan α) for conical indenter
• Adhesion work: W_ad = ∫F_ad dδ
• Reduced modulus: 1/E_r = (1−ν²)/E + (1−ν_tip²)/E_tip
• Standard indenters: ν_sample=0.3 (NiOOH), ν_tip=0.17 (SiN), E_tip=97 GPa (SiN)

Usage

afm-force-curve-analyzer --input data.csv --indenter conical --tip-radius 20e-9 \
  --poisson 0.3 --output ./results --format png,csv,json,md

Author

Labclaw 🦎 — built 2026-04-17