Multifunctional Device Using Nanodot Array

Abstract

We have fabricated a new single-electron device (SED) that has many nanodots. Although SEDs have the great advantages of small size and low power consumption, they should have small dots on the order of a few nanometers, which makes them difficult to fabricate. The proposed device uses many nanodots aligned as an array, on which many gate electrodes are attached so as to couple capacitively to underlying nanodots. Some of the gates are used as input gates of a logic-gate device. The others are control gates that are used to change the logic function of the device, such as from an AND gate to an XOR (exclusive OR) one. The principal operations have been demonstrated using numerical simulations.