The contact angle for a liquid on a surface is governed by the equation:
γSV = γSL + γLVcos(θ),
where each γ is the interfacial tension between solid/vapour, solid/liquid, or
liquid/vapour and θ is the contact angle. The vapour phase componment is air
in all examples below.
Choose a liquid/solid combination, and then press the button to set the γ values.
Once the values are populated, press the button to calculate and draw the contact angle.
The drawing will show the angle, predict wetting behaviour, and show the beading behaviour
of the liquid on the surface.
You may enter your own values for any/all γ's, but be sure to check the appropriate box.
Liquid/Air interfacial tension
Solid/Air interfacial tension
Solid/Liquid interfacial tension
This is the work of Dr. Mauricio Cafiero and may be used widely though attribution is appreciated.
