LASER MICRO-TEXTURING & SURFACE STRUCTURING

Ablative Laser Micro-Texturing & Biomimetic Surface Calculator

Calculate surface micro-pillar grid pitch ($\Lambda$), solid fraction ($f_s$), Cassie-Baxter superhydrophobic water contact angle ($\theta_{\text{CB}}$), aspect ratio ($h/w$), and feature array density for picosecond and femtosecond laser surface micro-texturing.

1. Input Parameters

Biomimetic Surface Pattern Geometry

Pattern Grid Pitch (Λ) [µm]

Center-to-center distance between adjacent pillars or grooves.

Micro-Feature Width (w) [µm]

Ablation Depth (h) [µm]

2. Calculation Results

Solid Fraction (f_s)

0.00

Cassie-Baxter Contact Angle

0.0°

Aspect Ratio (h/w)

0.0

Ablation Density

0 / mm²

3. Geometric Visualizer

Tooling & Vector Prepress Engineering Notes

1. Cassie-Baxter Superhydrophobicity: Trapping air pockets beneath liquid droplets establishes the Cassie-Baxter state: $\cos\theta_{\text{CB}} = f_s (\cos\theta_0 + 1) - 1$. When solid contact fraction $f_s \le 0.15–0.25$, apparent water contact angle exceeds $150^\circ$ with roll-off angle $< 5^\circ$.

2. Ultrafast Laser Cold Ablation: Picosecond and femtosecond lasers (pulse duration $\le 10\text{ ps}$) ablate precise micro-pillars without heat-affected zone (HAZ) recast burrs.

3. Galvanometer Vector Hatch Coordination: CAD/CAM vector hatch paths must utilize bi-directional zigzag scan vectors with sky-writing jump delay compensation to eliminate edge over-burn.