How to kind-of do this already.
Linky
NTCT, PTCT & METL will not conduct to each other. As shown in the example above.
To conduct electricity onto the NTCT/PTCT wires you need NSCN at one end of the wire, and PSCN at the other.
Remember that the PTCT/NTCT must be within a pixel of each other to conduct so you will need to use really small wires.