Patent ID: 8389055
Filing Date: 2013-03-05
Classification: B81C,B82Y

Abstract:
1. A method for preparing a substrate with micrometallic masses aligned on its surface, wherein the substrate contains numerous zero valence fine metal masses aligned on the surface at intervals of 10 nm to 50 nm wherein the fine metal masses are pillar-shaped or dot-shaped or a combination thereof and have diameters of 3 nm to 15 nm wherein the pillar-shaped masses are oriented in a direction substantially perpendicular to the surface, wherein the method comprises the steps of (a) preparing a micro phase separation membrane of an amphiphilic block copolymer on a substrate, wherein the membrane has a thickness of about 50 nm to 1 μm, and then exposing the membrane to a solution containing metal ions, (b) drying the membrane to form a micro phase separation membrane with the metal ions localized in its hydrophilic segment, and (c) irradiating vacuum ultraviolet light on the micro phase separation membrane under vacuum to reduce the metal ions and, as a result of the irradiation, organic materials including those in the micro phase separation membrane are completely removed by the ozone generated with the vacuum ultraviolet light irradiation leaving the fine metal masses on the surface.