Patent ID: 7264007

Claim:
A head having a head surface, the head used in a substrate preparation apparatus, the head configured to be disposed proximate to a surface of a substrate, comprising: at least one of a first source inlet for delivering a first fluid to the surface of the substrate through the head; at least one of a second source inlet for delivering a second fluid to the surface of the substrate through the head, the second fluid being different than the first fluid; at least one of a source outlet for removing each of the first fluid and the second fluid from the surface of the substrate, at least a portion of the at least one of the source outlet being located in between the at least one of the first source inlet and the at least one of the second source inlet; and a transducer disposed in the head for applying acoustic energy at a location between the at least one of a first source inlet and the source outlet; wherein the head surface has substantially flat surface regions, and the head surface is defined so that the at least one of the first source inlet, the second source inlet and the source outlet are defined by discrete holes that reside at the head surface and extend through the substantially flat surface regions of the head surface.