1. A nonvolatile power control device comprising: an input terminal; an output terminal in electrical communication with a circuit to be controlled; a control structure, electrical stimulation of the control structure controlling the formation of a electrically conductive channel between the signal input terminal and the output terminal, a first portion of the electrically conductive channel including a nanotube channel element and a second portion of the electrically conductive channel including a field modulatable semiconductor channel element; wherein the formation of the electrically conductive channel controls power to the circuit to be controlled.