Fluidic waveguides have inward surfaces or areas that face each other, separated by a channel region that can be covered. For example, an integrally formed channel component can include two walls parts and a connecting part, with inward surfaces on the wall parts and, extending between them, a base surface;...http://www.google.fr/patents/US7529438?utm_source=gb-gplus-shareBrevet US7529438 - Producing fluidic waveguides
