Contact angle - Dataphysics OCA15plus

Location: Nanofabrication Lab
Responsible: Rita Branquinho
 
Description:
The OCA 15 is the R&D instrument for automated video contact angle metrology and drop shape analysis. It features proprietary software-controlled measurement and analysis of:
- Contact Lamella Method on any liquid including pastes and polymer melts.
- Static and dynamic contact angle according to the Sessile and Captive Drop Methods as well as the analysis of the drop shape according to the Pendant Drop Method.
- Wetting behavior of solid surfaces.
- Surface energy of solids surfaces and their components for Work of Adhesion/calculation. Surface and interfacial tension through the analysis of the Pendant Drop Shape Method.
- The 32-bit Windows based software (SCA) developed for Windows 2000/XP/NT offers various expansion modules:
- Static and dynamic contact angle measurement according to the Sessile and Captive Drop Method.
- Calculation of the surface and interfacial tension from the contours of pendant and sessile drops as well as from liquid lamellas on plates, rods and threads.
- Calculation of free energy of solids surfaces and their components (e.g. dispersion, polar and hydrogen bond force contribution, and their respective acid and base portions) according to the theories of Wu, Zisman, Owens-Wendt, Extended Fowkes, Schultz 1, Schultz 2, Fowkes, Equation of State, and van Oss & Good (FOCG).
- Statistics and measurement error analysis.