Optical Tensiometer – Theta Flex
OVERVIEW
What you can measure?
- Static contact angle
- Sessile drop, captive bubble and meniscus methods
- Dynamic contact angle
- Dynamic contact angle, advancing and receding contact angle, contact angle hysteresis and roll-off angle
- Surface free energy
- Sessile drop, captive bubble and meniscus methods
- Surface- and interfacial tension
- Pendant drop and reverse pendant drop methods
- Roughness-corrected contact angle and 3D surface roughness
- Fringe projection phase shifting method
- Interfacial dilatational rheology
- Pulsating drop method
SPECIFICATIONS
Hardware
| Measuring range (°, mN/m) | 0…180, 0.01…2000 |
|---|---|
| Accuracy (°, mN/m) | ±0.1, ±0.01 |
| Maximum sample size (mm) | Unlimited×100×320 (with stage) |
| Integrated sample holders | Yes |
| Frame interval | 0.33 ms … 1000 s |
| Maximum resolution (px) | 1984×1264 |
| Maximum measuring speed (fps) | 3009 |
| Camera | USB 3.0 digital camera with zoom |
| Camera protection | Inside instrument covers |
| Camera view angle (°) | -4.5 … 2.5 |
| Light source and size | LED based background lighting, 62 x 62 mm |
| Field of view (Ø, mm) | 1.44…32.3 |
| Measurement indicator LED | Yes |
| Dimensions — Basic frame (L×W×H, mm) | 765 x 230 x 435 |
| Weight — Basic frame (kg) | 26 |
ACCESSORIES
Topography 3D module
Theta Flex can be combined with the unique 3D Topography module that takes the wettability and adhesion analysis into a completely new level by measuring both contact angle and surface roughness of the sample in a single measurement. Distinguish the effect of roughness on contact angle and surface free energy.
Tilting cradle
A software controlled tilting cradle. Used for studying dynamic contact angles. Tilting range from 0 to 90° and tilting resolution 0.1°. The vacuum stage top C204B is recommended to be used with this option.
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