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Artificial Synapses with Short- and Long-Term Memory for Spiking Neural Networks Based on Renewable Materials

Title
Artificial Synapses with Short- and Long-Term Memory for Spiking Neural Networks Based on Renewable Materials
Authors
Park, YoungjunLee, Jang-Sik
POSTECH Authors
Lee, Jang-Sik
Date Issued
Sep-2017
Publisher
AMER CHEMICAL SOC
Abstract
Emulation of biological synapses that perform memory and learning functions is an essential step toward realization of bioinspired neuromorphic systems. Artificial synaptic devices have been developed based mostly on inorganic materials and conventional semiconductor device fabrication processes. Here, we propose flexible biomemristor devices based on lignin by a simple solution process. Lignin is one of the most abundant organic polymers on Earth and is biocompatible, biodegradable, as well as environmentally benign. This memristor emulates several essential synaptic behaviors, including analog memory switching, short-term plasticity, long-term plasticity, spike-rate-dependent plasticity, and short-term to long-term transition. A flexible lignin-based artificial synapse device can be operated without noticeable degradation under mechanical bending test. These results suggest lignin can be a promising key component for artificial synapses and flexible electronic devices.
Emulation of biological synapses that perform memory and learning functions is an essential step toward realization of bioinspired neuromorphic systems. Artificial synaptic devices have been developed based mostly on inorganic materials and conventional semiconductor device fabrication processes. Here, we propose flexible biomemristor devices based on lignin by a simple solution process. Lignin is one of the most abundant organic polymers on Earth and is biocompatible, biodegradable, as well as environmentally benign. This memristor emulates several essential synaptic behaviors, including analog memory switching, short-term plasticity, long-term plasticity, spike-rate-dependent plasticity, and short-term to long-term transition. A flexible lignin-based artificial synapse device can be operated without noticeable degradation under mechanical bending test. These results suggest lignin can be a promising key component for artificial synapses and flexible electronic devices.
Keywords
RESISTIVE SWITCHING BEHAVIOR; SYNAPTIC PLASTICITY; FUNCTIONAL MATERIALS; GREEN ELECTRONICS; OXIDE MEMRISTORS; THIN-FILMS; LIGNIN; DEVICES; SYSTEMS; IMPLEMENTATION
URI
http://oasis.postech.ac.kr/handle/2014.oak/50413
DOI
10.1021/acsnano.7b03347
ISSN
1936-0851
Article Type
Article
Citation
ACS NANO, vol. 11, no. 9, page. 8962 - 8969, 2017-09
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 LEE, JANG SIK
Dept of Materials Science & Enginrg
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