Abstract: An example of a carbon nanotube capacitor may include (i) a carbon nanotube film having carbon nanotubes and voids with dielectric material, (ii) conductive contacts and (iii) a dielectric layer. The carbon nanotube film may switch from a conductive state to a non-conductive state when a voltage is applied by creating an electrical break within the carbon nanotube film and providing a first conductive region and a second conductive region within the carbon nanotube film. The electrical break may separate the first conductive region from the second conductive region. The first and second conductive regions may store charge. An integrated device may include one or more transistors and one or more carbon nanotube capacitors. A method of making a carbon nanotube capacitor is also disclosed.

Abstract: A carbon nanotube (CNT) capacitor includes a CNT film and four terminals. The first terminal includes a first end electrode disposed at a first end of the CNT film. The second terminal includes a second end electrode disposed at a second end of the CNT film. The third terminal includes an upper electrode disposed above the CNT film. The fourth terminal includes a lower electrode disposed below the CNT film. A method of operating a CNT capacitor includes applying a first signal across the first and second terminals to switch a CNT film from a conductive state to a non-conductive state, and applying a second signal across the third and fourth terminals to store charge or to discharge charges in the CNT capacitor. A method of making a CNT capacitor includes providing four terminals and a CNT film.