Patent ID: 7757371
Filing Date: 2010-07-20
Classification: B82Y,C04B,C23F,C25D,G01M,Y10T

Abstract:
1. A method for making a reference leak, comprising the steps of: (a) preparing a substrate; (b) forming a patterned catalyst layer on the substrate, the patterned catalyst layer comprising one or more catalyst blocks, each catalyst block being located at a respective chosen position on the substrate; (c) forming one or more elongate nano-structures so as to extend from the corresponding catalyst blocks by a deposition method; (d) forming a leak layer of one of a metallic material, a glass material, a composite material, and a ceramic material on the substrate, the one or more elongate nano-structures being thereby partly or completely embedded within the formed leak layer; and (e) removing the one or more elongate nano-structures and the substrate to obtain a reference leak with one or more leak holes defined therein, each leak hole being defined by a space previously occupied by a respective one elongate nano-structure.