Abstract: During the manufacture of Josephson junction devices, it is necessary to provide superconducting layers for electrodes. During the manufacture of semiconductors, it is necessary to provide conductive paths and leads. A layer of conducting metal or superconducting metal may be vacuum deposited in such a manner that any predetermined pattern or shape of normally conducting metal is made transversely non-conducting. The layer metal which is transversely non-conductive is vacuum deposited in the presence of an inert gas at a pressure which is high enough to cause the evaporated and deposited metal to form islands of conductive metal separated by insulating voids to provide gross electrical anisotropy.