Voltage-dependent plasticity and image Boolean operations realized in a WO _x -based memristive synapse

Abstract

The development of electronic devices that possess the functionality of biological synapses is a crucial step towards neuromorphic computing. In this work, we present a WO x -based memristive device that can emulate voltage-dependent synaptic plasticity. By adjusting the amplitude of the applied voltage, we were able to reproduce short-term plasticity (STP) and the transition from STP to long-term potentiation. The stimulation with high intensity induced long-term enhancement of conductance without any decay process, thus representing a permanent memory behavior. Moreover, the image Boolean operations (including intersection, subtraction, and union) were also demonstrated in the memristive synapse array based on the above voltage-dependent plasticity. The experimental achievements of this study provide a new insight into the successful mimicry of essential characteristics of synaptic behaviors.

Polyacrylonitrile Passivation for Enhancing the Optoelectronic Switching Performance of Halide Perovskite Memristor for Image Boolean Logic Applications

“…Boolean operation is a key logic algorithm widely used in image processing [33]. Through Boolean logic operation, "X"-and "Y"-shape images can be transformed into a new image "N", and the operational rule can be categorized into intersection (N = X ∩ Y), union (N = X ∪ Y), and subtraction (N = X − Y) [34][35][36]: The optoelectronic switching characteristics also enable the devices to perform image logical operations. Boolean operation is a key logic algorithm widely used in image processing [33].…”

“…Boolean operation is a key logic algorithm widely used in image processing [33]. Through Boolean logic operation, "X"-and "Y"-shape images can be transformed into a new image "N", and the operational rule can be categorized into intersection (N = X ∩ Y), union (N = X ∪ Y), and subtraction (N = X − Y) [34][35][36]:…”

Amorphous gallium oxide homojunction-based optoelectronic synapse for multi-functional signal processing

“…The prolonged duration (1, 2, 5, 10, 15 s) acts as a boost to the response of the device, and also maintains the relaxing current for a long time (>30 s) after turning off the light. As for the pulse number, the same increasing and relaxing trend of current occurs as the number of pulses varies (5,10,20,40) and the time consumed (from <35 s to >80 s) by the relaxation process which indicates the short-term memory (STM) is transmitted to longterm memory (LTM). In addition, critical synaptic plasticity called PPF is a short-term potentiation process essential to decoding temporal information in optical signals.…”

“…Pavlovian conditioning reflex experience, one of the most classic examples, is testified successfully by measuring the puppy's responsiveness with the co-modulation of ringing and feeding signals, which is interpreted in Fig. 5(a) [27,39,40] . As previously described and exhibited in Figs.…”

Bio-Cellulose Substrate for Fabricating Fully Biodegradable Resistive Random Access Devices

“…Resistive random access memory (RRAM), which is composed of a simple structure, has attracted lots of attention in academy and industry due to its outstanding performance such as high-speed operation, low power consumption, and long retention time. − In addition, RRAM has been emphasized in next-generation computing; the memristive synapse is one of the applications that have the potential to be biocompatible for state-of-the-art development. − …”