Patent ID: 8208136

Claim:
A method of making an array of large area substrates, comprising: drawing a plurality of tubes to form a plurality of drawn tubes; cutting the plurality of drawn tubes into cut drawn tubes, each cut drawn tube having a first end and a second end along the longitudinal direction of the respective cut drawn tube, the cut drawn tubes collectively having a first predetermined periodicity; forming a plurality of surface features on the first ends of the plurality of cut drawn tubes; forming a first metal layer on the first ends of the cut drawn tubes to provide a first large area substrate, the plurality of surface features on the first ends having a first aspect ratio; repeating the above steps to provide a second large area substrate having a second predetermined periodicity, a second metal layer on the first ends of the cut drawn tubes, and a plurality of surface features on the first ends of the cut drawn tubes having a second aspect ratio, at least one of the second predetermined periodicity, the second metal layer and the second aspect ratio of the second large area substrate being different from the respective first predetermined periodicity, first metal layer and first aspect ratio of the first large area substrate; and bundling the first and second large area substrates to provide an array of large area substrates.