FOM Name: Contact Angle
Model Number: Dataphysics OCA15EC
Contact: Anna Kiyanova (anna.kiyanova@wisc.edu, 608-263-1735)
Center: SMCL
Location: B46 Engineering Hall
Dataphysics OCA15EC Contact Angle Measuring System provides a software controlled measurement and analysis of the static and dynamic contact angle according to the Sessile & Captive Drop-Method as well as the shape of Pendant drops. The system allows a determination of the wettability of solid surfaces, the
surface free energy of solids and their components and the calculation of the surface and interfacial tension based on the analysis of the drop shape. It includes TEC 400 temperature/environmental control chamber for measurements above room temperature and under protective atmosphere.
This is an accordion element with a series of buttons that open and close related content panels.
Configuration
- Measurement modes: sessile drop/captive bubble and pendant drop
- Range of surface and interfacial tension: 0.01 – 2000 mN/m with +- 0.01 mN/m resolution
- Range of contact angle: 0° – 180° with +- 0.1° accuracy
- Dosing system: automatic, direct single dosing unit; compatible with a variety of standard and disposable syringes and needles
- Measuring stage adjustments: X, Y, and Z axis
- Video camera: max resolution 1448 x 1088 pixels with 156 frames/s, max frame rate 3246 frames/s with 1448 x 60 pixels
- Optical system: x0.7 – x4.5 magnification, < +- 6 mm continuous fine focus
- Software dpiMAX 20P (contact angle measurement), 21P (surface free energy calculation), and 22 (pendant drop measurement)
- Methods of the surface free energy of solids calculation: Wu, Zisman, Owens-Wendt-Rabel-Kaelble, Fowkes, Extended Fowkes, Schultz 1+2, van Oss & Good, Neumann
