An active material actuator assembly is provided having first and second active material components operatively connected to a movable member. Such sound bullets are created by controlling andor redirecting highly nonlinear acoustic waves or pulses propagating through an array of actuators. The innermost metallic ply and the additive layer are each sized and configured to facilitate the generation of thermal energy sufficient to deposit the first additive layer to the innermost metallic ply during the friction stir welding process. This maintains the state of electrical connection to the main body unit of the device unless the memory member is not withdrawn from the memory holder. The present invention is based upon passing a sufficient minimum number microspheres through the flow analyzer during an assay run. The layer is selected from a metal carbide, metal oxycarbide, and combinations thereof.