Superior Coating Quality through
Precise Interface Analysis
Get reliable wettability insights without the complexity.
DMe-211Plus delivers precise results for contact
angle and surface free energy measurements.
Essential Core Functions
for Surface Analysis
Static contact angle
Basic yet essential evaluation for surface cleanliness and
coating quality.
Time-based
measurements
Showing the spreading
behavior of liquids from their
first contact with the solid
until equilibration.
Surface free energy
Included as standard.
Analyze the work
of adhesion and
coating stability.
Key features of DMe-211Plus
- Automatic recognition of droplet deposition
- Live image display and droplet volume monitoring
- Movie converter
- Manual dispenser with a set of 5 glass syringes and 5 SUS needles for precise adjustment of droplet volume and quick refilling and replacement of liquid samples
- Fine adjustable stage in z-axis for gentle deposition of droplets without distortion
- Adjustable level of the body and stage
- Droplet calibration standard for standard view, bearing one full circle for calibration and three droplet silhouettes of 5º, 60º, and 108º for periodic inspection of measurement accuracy
Hardware
- Pendant drop kit for standard view, incl. pendant drop calibration standard
- Surface free energy kit
- Determination of wettability of surfaces like glass, metal, plastics, ceramics at ambient temperature
- Surface cleanliness
- Determination of surface and interfacial tension using the pendant drop kit (standard view)
- Analysis of surface free energy of solids
| DMe-211Plus | ||
| Camera system | USB2.0 CMOS camera: 30fps at 640x480 pixels | |
| Optical system |
focus: manual focus with fixed zoom field of view: 6.3x4.7mm |
|
| Measuring methods |
contact angle: sessile drop (static and dynamic) surface/interfacial tension: pendant drop (static and dynamic) |
|
| Analysis methods |
contact angle: θ/2, tangent, circle fitting, ellipse fitting surface/interfacial tension: Young-Laplace method, ds/de method surface free energy: OWRK, Owens-Wendt, Kaelble-Uy, Kitazaki-Hata, Wu, acid-base, Zisman |
|
| Measuring range |
contact angle: 0 to 180° surface/interfacial tension: 0 to 2000mN/m |
|
| Resolution |
contact angle: 0.01° surface/interfacial tension: 0.01mN/m |
|
| Accuracy1) |
contact angle: 0.3° surface/interfacial tension: 0.3mN/m |
|
| Maximum sample surface area and height (WxDxH) | 160x100x10mm |
|
| Maximum sample weight | 300g | |
| Sample stage operation: X-axis Y-axis Z-axis |
--- --- 10mm, manually by a rotary knob |
|
| Dispenser operation: Z-axis Droplet generation Dispensing resolution |
--- manually, by a rotary knob 0.1μL |
|
| Droplet deposition | manually, by stage operation | |
| Dimensions (WxDxH) | 170x346x283mm | |
| Weight | ca. 1.8kg | |
| Electric power |
USB bus power DC5V, max. 500mA |
|
| Operating environment |
temperature: +10 to +35℃, humidity: 30-80%RH (non-condensing) positioned away from sources of electrical noise and vibration |
|
1) Accuracy is the repeatability in terms of standard deviation based on the manufacturer’s calibration standard
Typical coating & adhesion analysis
Thin-Film Cleanliness
Wettability data monitors substrate cleanliness at the molecular level, preventing defects in precision thin-film coatings.
Adhesion Optimization
Surface free energy (SFE) analysis enables identifying optimal surface modification conditions for superior adhesion.
Liquid Spreading & Leveling
Time-based measurement captures the spreading behavior of functional fluids, ensuring optimal leveling and consistent coating thickness.