1. A nanotube switch, comprising: an input node; a control node; a plurality of nanotubes; and a first isolation structure comprising first and second electrodes disposed on opposite sides of the plurality of nanotubes, the first and second electrodes having substantially the same electrical potential as each other, at least one of the first and second electrodes being an output node, wherein the plurality of nanotubes is configured and arranged to provide an electrical pathway between the input node and the output node in response to electrical state at the input node and the control node.