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Flexible Artificial Synapses with a Biocompatible Maltose-Ascorbic Acid Electrolyte Gate for Neuromorphic Computing.

Wei Qin¹, Byung Ha Kang¹, Hyun Jae Kim¹

¹School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea.

ACS Applied Materials & Interfaces

|July 19, 2021

Summary

This summary is machine-generated.

Researchers developed novel artificial synaptic transistors using a biocompatible maltose-ascorbic acid electrolyte. These devices emulate brain functions and show promise for eco-friendly neuromorphic electronics.

Keywords:

artificial synapse ascorbic acid indium tin oxide maltose synaptic transistor

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Area of Science:

Materials Science
Neuroscience
Electronics Engineering

Background:

Artificial synaptic electronics are crucial for developing brain-like computers and AI.
Electrolyte-gated synaptic transistors offer advantages like higher driving currents and lower operating voltages.

Purpose of the Study:

To propose and investigate novel synaptic transistors utilizing a maltose-ascorbic acid electrolyte.
To demonstrate the emulation of fundamental synaptic functions using these devices.

Main Methods:

Fabrication of synaptic transistors with a maltose-ascorbic acid electrolyte (MAE).
Modulation of channel conductance via gate input pulse voltage.
Testing of synaptic functions: excitatory postsynaptic current, paired-pulse facilitation, long-term potentiation, and long-term depression.

Main Results:

Successful emulation of key synaptic functions.
Demonstration of high mechanical endurance (1000 bending cycles at 5 mm radius).
Near-linear conductivity modulation and good repeatability observed.

Conclusions:

The proposed MAE-gated synaptic transistors exhibit excellent biocompatibility, biodegradability, and mechanical stability.
These devices show potential for environmentally friendly, high-performance neuromorphic electronics.
Future applications include dermal and implantable electronics.