A Pichia microorganism is transformed with DNA for the expression of a pertactin antigen whose amino acid sequence is at least 95% homologous with that set forth in FIGS. The method comprise the following steps: first, forming patterns of shielding layer on a substrate; then forming patterns of bridging layer and peripheral traces on the shielding layer by a single patterning process; thereafter, forming patterns of insulating layer on the peripheral traces; and finally, forming patterns of touch control electrode layer. The product can also have a complex or modular shape, from which it is possible to cut and eventually to work finished pieces of predetermined dimensions. A spacer engages the shank to prevent rotation of the shank during installation. In another aspect, the present invention provides a silicon carbide semiconductor device that has a 4H-silicon carbide substrate, a layer of silicon dioxide disposed on the 4H-silicon carbide substrate and a region of substantial nitrogen concentration at the silicon dioxidesilicon carbide interface.