Ultralow Power Dual-Gated Subthreshold Oxide Neuristors: An Enabler for Higher Order Neuronal Temporal Correlations

Abstract

Ultralow power dual-gated subthreshold oxide neuristors : an enabler for higher order neuronal temporal correlations

Field‐Driven Athermal Activation of Amorphous Metal Oxide Semiconductors for Flexible Programmable Logic Circuits and Neuromorphic Electronics

“…Devices with a lower initial channel conductance (0.5 mS, read at +0.1 V) depicted larger weight changes compared to devices in the depletion mode with a higher initial channel conductance (5 mS) for all temporal correlations between pre‐ and postsynaptic spikes. This priming‐like activity enhances the programmability of these artificial synapses, paving way for highly plastic neuromorphic circuits …”

“…Contrary to mass storage and conventional logic operations, emulation of biological signal processing sets unique requirements on the hardware switching devices, namely a strong operational history, analog (nonabrupt) switching transitions, continuously distributed conductance states, and programmable plasticity . Although two‐terminal memristive solutions have dominated this research area, three‐terminal FET‐based solutions have recently received significant scientific attention in this regard . With a gated control of channel conductance exploiting time‐dependent hysteresis and programmable shifts of threshold voltage ( V th ), the TFT configuration is promising in achieving programmable plasticity, compatible with spike‐based computing algorithms .…”

“…Although two‐terminal memristive solutions have dominated this research area, three‐terminal FET‐based solutions have recently received significant scientific attention in this regard . With a gated control of channel conductance exploiting time‐dependent hysteresis and programmable shifts of threshold voltage ( V th ), the TFT configuration is promising in achieving programmable plasticity, compatible with spike‐based computing algorithms . Here, we harness the hysteresis and field‐driven oxygen‐getting ability of electrolyte‐gated TFTs to demonstrate volatile and nonvolatile switching characteristics, emulating short‐ and long‐term plasticity features, respectively.…”

Cubic NaSbS2 as an Ionic–Electronic Coupled Semiconductor for Switchable Photovoltaic and Neuromorphic Device Applications

“…A synapse is the connection between two neurons (pre and post neurons) in the brain and permits the transfer of information in the form of electrical/chemical signal. The presence of slowly decaying current/voltage signals induced by an input pulse (electric or optical) and history dependent output signals are the fundamental requirements for an artificial synapse . In this device, the light pulse is the presynaptic input and the current across the two lateral FTO electrodes is the post‐synaptic output ( Figure a).…”

“…The synaptic weight gradually decays over time and based on its lifetime, it can be categorized as short‐term synaptic plasticity (STP) or long‐term synaptic plasticity (LTP). Plasticity occurs in multiple time scales in human brain‐ while long‐term plasticity happening on a time scale of several minutes is believed to be the cause of experience‐dependent alteration of the neural circuit, short‐term plasticity occurring on a time scale of tens of milliseconds is beneficial for temporal filtering and could play a role in speech processing and working memory …”