Overview

The DataPhysics Optical Contact Angle (Model OCA 35) instrument utilizes techniques to quantify the wettability of a solid surface based on the angle formed at the three-phase boundary (liquid, solid, gas). This instrument allows for automatic measurements, and reduces subjective factors (like human error) often seen with traditional, manual, contact angle instruments.

This instrument combines high resolution optics, exact liquid dosing and precise sample positioning into to access wetting behavior (via sessile drop angle, and advancing and/or receeding contact angles), as well as a series of system analysis and tests (e.g. surface tension). Measurement time is also reduced, allowing for a higher through-put.

Analysis is facilitated by SCA software, and can also include images and videos to complement the data obtained.

The system is typically used with water, to access hydrophobicity (i.e. a surface does not like water) or hydrophilicity (i.e. a surface likes water), but other solutions may be compatible.