Figure 5: Dot-product operation in the integrated 3D memristive crossbars.
From: A multiply-add engine with monolithically integrated 3D memristor crossbar/CMOS hybrid circuit
(a) Schematic of the set-up for the dot-product operation utilizing two devices in two different layers of the 3D crossbar, (b) An example of the dot product operation with two sinusoidal inputs applied to two devices in a 3D crossbar and the device in layer 1 being programmed to decreasing conductance values, (c) (i) evolution of the output waveform with the weight of the device in layer 1 changing (ii) and the weight for the device on the 2nd layer being kept constant (iii); (iv) evolution of the output waveform when weight of the device in layer 1 is kept constant (v) while layer 2 device changes it’s state (weight) (vi).
