Patent ID: 8865504

Claim:
A method for patterning an article comprising a first layer of a first material, a first surface of the first layer being in intimate contact with at least a portion of a first surface of a second layer of a second material that is different from the first material, the method comprising: providing a first thread carrying a first solvent within which the first material is soluble; providing a second thread aligned with and adjacent the first thread, the second thread carrying a second solvent within which the first material is soluble and within which the second material is relatively more soluble than the first material; contacting the first and second threads with the first layer of the article and thereby solvating the first material to remove at least part of the first layer and to provide a channel therethrough; and contacting the second thread with the second layer of the article and thereby solvating the second material to remove at least part of the second layer and provide a channel therethrough.