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News

New Developments 1/1/17

A new generation of bubble pressure tensiometers, including BPA-2P and BPA-2S , as follow up developments of the excellent predecessors BPA-1P and BPA-1S , are available more...


New Books 1/1/17

Textbook “Dispersionseigenschaften - Stabilität, 2D-Rheologie, 3D-Rheologie“ This textbook contains the main fundamental knowledge on interfaces, colloidal systems more...


Latest events 1/1/17

2D-3D Rheology and Stability of Disperse Systems - User Workshop, May 8-10, 2017, Berlin-Schönefeld, Germany In May 2017 the 2D-3D Rheology and Stability of Disperse more...

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Contact Angle

young equation

Contact Angle Modul CA-1


The characterization of solid surfaces and liquids play a vital role in understanding adhesion, material wettability, biocompatibility, lubrication of solid surfaces as well as the wetting, spreading, washability and adsorption of liquids. Contact angle and interfacial tension measurements provide the information needed for the development and modification of liquid and solid surfaces. Using various theoretical models, the measured contact angles can be re-interpreted in terms of surface energy contributions. Note, however, this are only differen ways of data interpretation while the really measured quantity is the contact angle itself.