Contact Angle Meter: DMs-402
High-Speed, High-Resolution Contact Angle & Interfacial Analysis for Advanced Surface Science
The DMs-402 Contact Angle Meter is a high-performance surface analysis system designed for advanced contact angle measurement, wetting dynamics evaluation, and interfacial property analysis. Engineered for laboratories that require high temporal resolution and precise image-based analysis, the DMs-402 enables detailed investigation of fast wetting phenomena, surface treatments, and material interactions.
With its high-speed camera, automatic image analysis, and wide measurement capability, the DMs-402 is ideally suited for materials research, electronics, coatings, pharmaceuticals, and academic surface science studies, where conventional contact angle meters lack sufficient speed or analytical depth.
Key Features:
High-Speed Camera for Dynamic Wetting Analysis
• Enables precise observation of rapid wetting, spreading, absorption, and droplet oscillation
• Ideal for studying dynamic contact angle changes immediately after droplet deposition
This capability allows the DMs-402 to capture transient surface behavior that standard systems cannot resolve.
Automatic Droplet Recognition & Advanced Image Processing
• Eliminates operator subjectivity in edge detection
• Ensures high reproducibility and data consistency across measurements
The system delivers reliable results even on challenging surfaces or low-contrast droplets.
Multiple Contact Angle Evaluation Methods
• θ/2 (height–width method)
• Tangent method
• Ellipse fitting
• Circle fitting
This flexibility allows users to select the most appropriate method depending on surface roughness, wettability, or droplet shape.
Time-Resolved Contact Angle Measurement
• Enables analysis of spreading rate, absorption kinetics, and surface modification effects
• Suitable for porous materials, coatings, textiles, membranes, and treated polymers
Time-dependent analysis is essential for understanding real-world wetting behavior
Pendant Drop & Sessile Drop Measurement Capability
• Supports pendant drop method for surface and interfacial tension measurement
• Analysis based on Young–Laplace equation
This dual functionality allows one instrument to characterize both solid–liquid and liquid–liquid interfaces.
Surface Free Energy Calculation
• Supported theoretical models include: Owens–Wendt, Kaelble–Uy, Wu, Acid–base, Zisman plot
This enables quantitative evaluation of surface polarity and adhesion behavior.
Precision Droplet Deposition & Stage Control
• High positional accuracy improves repeatability
• Suitable for smooth, rough, and soft surfaces
Stable Mechanical Design for High-Resolution Imaging
• Optimized optical geometry for sharp droplet imaging
• Supports accurate measurements even at very high frame rates