A method for forming a self aligned pattern on an existing pattern on a substrate comprising applying a coating of a solution containing a masking material in a carrier, the masking material having an affinity for portions of the existing pattern; and allowing at least a portion of the masking material to preferentially assemble to the portions of the existing pattern. The ratio of the outside diameter of the first cladding to the outside diameter of the core is 1. The voltage signals are wirelessly re-transmitted by the sensortransmitter as positional signals indicative of a current location of the sensortransmitter in the anatomical body.