Nanotube transfer devices controllably form a nanotube-based electrically conductive channel between a first node and a second node under the control of a control structure. A control structure induces a nanotube channel element to deflect so as to form and unform the conductive channel between the nodes. The nanotube channel element is not in permanent electrical contact with either the first node or the second node. The nanotube channel element may have a floating potential in certain states of the device. Each output node may be connected to an arbitrary network of electrical components. The nanotube transfer device may be volatile or non-volatile. In preferred embodiments, the nanotube transfer device is a three-terminal device or a four-terminal device. Electrical circuits are provided that ensure proper switching of nanotube transfer devices interconnected with arbitrary circuits. The circuits may overdrive the control structure to induce the desired state of channel formation.