Synaptic Properties of Geopolymer Memristors: Synaptic Plasticity, Spike-Rate-Dependent Plasticity, and Spike-Timing-Dependent Plasticity

Mahmudul Alam Shakib; Zhaolin Gao; Caterina Lamuta

doi:10.1021/acsaelm.3c00654

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Synaptic Properties of Geopolymer Memristors: Synaptic Plasticity, Spike-Rate-Dependent Plasticity, and Spike-Timing-Dependent Plasticity

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Synaptic Properties of Geopolymer Memristors: Synaptic Plasticity, Spike-Rate-Dependent Plasticity, and Spike-Timing-Dependent Plasticity

Mahmudul Alam Shakib, Zhaolin Gao and Caterina Lamuta

ACS applied electronic materials, Vol.5(9), pp.4875-4884

09/07/2023

DOI: 10.1021/acsaelm.3c00654

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Abstract

Memristors, also known as artificial synapses, are devices that are able to mimic the memory functions of biological synapses. To emulate synaptic functions, memristors need to exhibit plasticity, which is a pivotal phenomenon in their biological counterparts. In a previous work, we demonstrated that geopolymers present memristive properties. In this work, we study different types of synaptic plasticity properties of geopolymer memristors. We demonstrate short-term and long-term memory resulting from potentiation-depression; Hebbian learning inspired spike-timing-dependent plasticity, spike-rate-dependent plasticity, history-dependent plasticity, paired-pulse facilitation, paired-pulse depression, and post-tetanic potentiation. These synaptic properties can be ascribed to the electro-osmosis-induced movement of ions in the capillaries and pores of the geopolymer memristors. These properties are extremely promising for the use of geopolymers in neuromorphic computing applications.

artificial synapse

geopolymer

synaptic memory

memristor

synaptic plasticity

STDP

SRDP

Hebbian learning

UIOWA OA Agreement

Details

Title: Subtitle: Synaptic Properties of Geopolymer Memristors: Synaptic Plasticity, Spike-Rate-Dependent Plasticity, and Spike-Timing-Dependent Plasticity
Creators: Mahmudul Alam Shakib - University of Iowa
Zhaolin Gao - University of Iowa
Caterina Lamuta - University of Iowa
Resource Type: Journal article
Publication Details: ACS applied electronic materials, Vol.5(9), pp.4875-4884
DOI: 10.1021/acsaelm.3c00654
ISSN: 2637-6113
eISSN: 2637-6113
Publisher: American Chemical Society
Grant note: DOI: 10.13039/100000181, name: Air Force Office of Scientific Research, award: FA9550-21-1-0416
Language: English
Electronic publication date: 09/07/2023
Academic Unit: Mechanical Engineering
Record Identifier: 9984464477202771

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