Sono-Tek will be exhibiting at Hannover Messe 2012 H2 & FC Fair April 23-27 at the Hannover Exhibition Grounds in Hanover, Germany, booth C76/1 with Rubroder GmbH Factory Automation. Ultrasonic nozzles produce highly durable, uniform, pinhole free coatings of carbon based catalyst inks onto fuel cell proton exchange membranes such as Nafion, without deformation of…