On The Modelling Of Electrowetting Using COMSOL Multiphysics
One of the upcoming technologies in displays is that of the electrowetting displays. A surface can be covered by a colored oil or transparent water using a voltage to increase or decrease the wettability of the surface. A simulation of the behavior of such a thin film of oil in water, forced to move due an electrostatic field, has been made using the level-set, two-phase flow application mode and the electrostatic application mode in COMSOL Multiphysics. Using the electrostatic field, a contact angle (depending on the electric field [Lippmann]) can be calculated, as well as an interface pressure (depending on the distance towards an electrode below the surface) between the oil and water. A study has been made of the movement of the oil due to the electrostatic field applied.
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