The present invention provides electrical devices having controlled electrical properties and being formed from nanotube components, together with a method of constructing the devices. In one example, the electrical device is formed from the central nanotube of a zigzag type interconnected between two nanotubes of an armchair type. The method of forming the nanotube structure includes connecting a first end of a zig-zag type nanotube to an end of an armchair type nanotube, and connecting a second end of the zig-zag type nanotube to an end of a second armchair type nanotube.