How about another layer before passing current into the shaped coils? 1. some sort of liquid crystal layer (transistor based), where all the coils are pre-draw

How about another layer before passing current into the shaped coils? 1. some sort of liquid crystal layer (transistor based), where all the coils are pre-drawn, only allowing layer 2 to conduct when low current goes through layer 1 2. once the coils are formed, pass actual current through the layer 2