Abstract: An apparatus, system, and method are provided for a vertical two-terminal nanotube or microtube device configured to capture and generate energy, to store electrical energy, and to integrate these functions with power management circuitry. The vertical device can include a column disposed in a template material extending from one side of the template material to the other side of the template material. Further, the device can include a first material disposed within the column, a second material disposed within the column, and a third material disposed in the column. A variety of configurations, variations, and modifications are provided.

Abstract: An apparatus, system, and method are provided for a vertical two-terminal nanotube device configured to capture and generate energy, to store electrical energy, and to integrate these functions with power management circuitry. The vertical nanotube device can include a column disposed in an anodic oxide material extending from a first distal end of the anodic oxide material to a second distal end of the anodic oxide material. Further, the vertical nanotube device can include a first material disposed within the column, a second material disposed within the column, and a third material disposed between the first material and the second material. The first material fills the first distal end of the column and extends to the second distal end of the column along inner walls of the column. The second material fills the first distal end of the column and extends to the second distal end of the column within the first material.