may then be cured curing may be performed in a variety of ways such as by subjecting the materials to certain environmental conditions e g temperature pressure etc or by the removal of solvents or suitable curing compounds or by irradiation exposure to ultraviolet or ultrasonic energy or by other suitable means for example z axis anisotropic adhesives are commercially available in both a thermoplastic variety or a thermosetting variety thermoplastic anisotropic adhesives are those that are heated to soften for application to the test substrate and then cooled for curing and include for example solvent based hot melt glue conversely thermosetting anisotropic adhesives are suitable for application to the test substrate at normal ambient temperatures and are heated for curing at temperatures from 100 u00b0 c to 300 u00b0 c for periods from several minutes to an hour or more suitable z axis anisotropic adhesives include those available from a i technology inc of trenton n j or sheldahl inc of northfield minn or 3 m of st paul minn as best seen in fig4 the anisotropically conductive layer 160 is formed on the test substrate 102 and the bumped die 10 is positioned adjacent to the layer 160 with.