%0 Journal Article
%T A proof of the invariance of the contact angle in Electrowetting
%A C. Scheid
%A P. Witomski
%J Mathematics
%D 2007
%I arXiv
%X We prove the invariance of the contact angle in liquid-solid wetting phenomena : an electrified droplet is spreading on a solid surface. The drop is minimizing its energy. We express the differential of this energy with respect to the shape of the drop and deduce necessary conditions for optimality . By variational method, using well-chosen test functions, we obtain the main result about the contact angle between the drop and the solid.
%U http://arxiv.org/abs/0707.2669v1