Memristor-Based Material Implication Logic: Prelude to In-Memory Computing

We report experimental demonstration of Material Implication (IMP) logic using ZnO nanowire-based memristors. The logic is demonstrated with a high-to-low resistance ratio of only five. This imposes much less stringent requirements on memristor performance that can enable IMP logic operation with lower bit error rates. Process independence on memristor and memristor-based IMP logic performance is demonstrated, and a more practical implementation of logic is made by relaxing the restriction imposed on the ranges of the values of on and off state resistances. IMP logic is validated up to a clock frequency of 100 KHz.