The ACA 50 is engineered specially for fully automatic/programmable measurement of the wetting behavior of solids (e.g. wafers or glass substrates for flat panel displays) under clean-room conditions, as well as for series tests and systematic analysis. The ACA 50 enables the reduction of subjective factors and time involved for contact angle measurements in research, quality- and production inspection.
For the software-controlled measurement and analysis of
- Static and dynamic contact angle according to the Sessile and Captive Drop method Analysis of the drop shape according to the Pendant Drop method
- Wetting behavior on solid surfaces
- Surface free energy of solids and their components
- Surface and interfacial tension out of the analysis of the drop shape
The ACA 50 consists of the basic instrument with the following technical equipment:
- Single needle support or optional a multiple needle support (max. 6 dosing needles and electronic syringe units) with fully automatic needle selection and vertical and horizontal positioning
- Measuring stage, fully automatic adjustable in three axis for accurate sample positioning
- Lens mount with motorized adjustable tilt
- Motorized powerful 7-fold zoom lens with software controlled magnification, aperture and focus
- Video measuring system with high-resolution CCD-camera
- High-performance video digitizing board (frame grabber) for the PC
- Illumination with continuously adjustable intensity for a homogeneous back lighting
- Control and measuring electronics for the teach-in procedure, graphic display with keyboard and video display
- Power supply with automatic voltage adjustment
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