Contact-Angle Classifier
Classify a measured contact angle using caller-supplied wetting thresholds.
Description
Contact-angle classification applies two caller-selected wetting thresholds.
Contact-angle classification applies two caller-selected wetting thresholds. The higher threshold takes priority when the bounds coincide.1
Classify a measured contact angle using caller-supplied wetting thresholds.
When to use Contact-Angle Classifier
Use this tool to classify a measured contact angle using caller-supplied wetting thresholds.
Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
How to use Contact-Angle Classifier and understand its results
- Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
- Enter contactAngleDegrees, hydrophobicThresholdDegrees, superhydrophobicThresholdDegrees using the field table and calculation rules, then run the tool.
- Read classification. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| contactAngleDegrees | Measured contact angle (°) | number; minimum: 0; maximum: 180 | Required |
| hydrophobicThresholdDegrees | Hydrophobic threshold (°) | number; minimum: 0; maximum: 180 | Required |
| superhydrophobicThresholdDegrees | Superhydrophobic threshold (°) | number; minimum: 0; maximum: 180 | Required |
Enter angles/bounds from 0–180° with lower≤upper. Return classification using inclusive high-side comparisons.
superhydrophobic if angle≥upper; hydrophobic if angle≥lower; otherwise hydrophilic Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| classification | Wetting classification | string; one of "hydrophilic", "hydrophobic", "superhydrophobic" |
{
"input": {
"contactAngleDegrees": 160,
"hydrophobicThresholdDegrees": 90,
"superhydrophobicThresholdDegrees": 150
},
"output": {
"classification": "superhydrophobic"
}
}Limitations and assumptions
No standard thresholds, surface roughness, hysteresis or liquid-specific measurement procedure are embedded.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Surface-Roughness Improvement: Calculate absolute and percentage surface-roughness improvement. For a complementary task, use Peening Fatigue Gain: Quantify measured fatigue-life improvement after laser shock peening.
References
-
Contact-Angle Classifier — tool.io
Similar or alternative tools
- Surface-Roughness Improvement
Calculate absolute and percentage surface-roughness improvement.
- Peening Fatigue Gain
Quantify measured fatigue-life improvement after laser shock peening.