Patent ID: 7897213
Filing Date: 2011-03-01
Classification: C25D,H01L

Abstract:
1. A method for preparing a surface of a substrate using a proximity head, comprising: applying a non-Newtonian fluid between the surface of the substrate and a head surface of the proximity head, the non-Newtonian fluid defining a containment wall along one or more sides between the head surface and the surface of the substrate, the one or more sides of the non-Newtonian fluid defining a treatment region on the substrate between the head surface and the surface of the substrate; and applying a Newtonian fluid to the surface of the substrate through the proximity head, such that the Newtonian fluid is substantially excluded from an area occupied by the non-Newtonian fluid and substantially maintained within the treatment region due to the containment wall, the Newtonian fluid aiding in the removal of one or more contaminants from the surface of the substrate.