Neuronal dynamics in HfOx/AlOy-based homeothermic synaptic memristors with low-power and homogeneous resistive switching

Nanoscale. 2018 Dec 20;11(1):237-245. doi: 10.1039/c8nr06694a.

Abstract

We studied the pseudo-homeothermic synaptic behaviors by integrating complimentary metal-oxide-semiconductor-compatible materials (hafnium oxide, aluminum oxide, and silicon substrate). A wide range of temperatures, from 25 °C up to 145 °C, in neuronal dynamics was achieved owing to the homeothermic properties and the possibility of spike-induced synaptic behaviors was demonstrated, both presenting critical milestones for the use of emerging memristor-type neuromorphic computing systems in the near future. Biological synaptic behaviors, such as long-term potentiation, long-term depression, and spike-timing-dependent plasticity, are developed systematically, and comprehensive neural network analysis is used for temperature changes and to conform spike-induced neuronal dynamics, providing a new research regime of neurocomputing for potentially harsh environments to overcome the self-heating issue in neuromorphic chips.

MeSH terms

  • Aluminum Oxide / chemistry*
  • Brain / physiology
  • Electrodes
  • Electronics
  • Hafnium / chemistry*
  • Humans
  • Long-Term Potentiation
  • Models, Neurological
  • Nerve Net
  • Neuronal Plasticity / physiology*
  • Neurons / physiology*
  • Oxides / chemistry*
  • Oxygen / chemistry
  • Semiconductors
  • Silicon / chemistry*
  • Synapses*
  • Temperature

Substances

  • Oxides
  • hafnium oxide
  • Aluminum Oxide
  • Oxygen
  • Hafnium
  • Silicon