Abstract
Formulated, processed, and dried Aloe polysaccharides thin film sandwiched between ITO as bottom electrode and Au as top electrode has been adopted as an artificial synapse to emulate behavior of neuromorphic computing. The synaptic plasticity or weight has been modulated with this simple metal-insulator-metal structure by applying voltage sweep and voltage pulse, with excitatory postsynaptic current being monitored. Synaptic potentiation and depression have been demonstrated by applying 6 consecutive sweeps of voltage in positive and negative polarity, respectively. By varying number (10 - 50) of voltage pulses, variable synaptic weight has been measured with paired pulse facilitation and post-tetanic potentiation indexes of 2.61x10and 1.45x10, respectively. The short-term plasticity and long-term potentiation can be clearly revealed when applying 40 pulses and beyond, with extracted time constants of approximately 28 s at 40 pulses and 90 s at 50 pulses.
Recommended Citation
Z. X. Lim et al., "Artificial Synaptic Behavior of Aloe Polysaccharides-Based Device with Au as Top Electrode," MRS Advances, vol. 5, no. 14 thru 15, pp. 693 - 698, Springer; Materials Research Society, Jan 2020.
The definitive version is available at https://doi.org/10.1557/adv.2019.461
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
dielectric; electronic material; memory; microelectronics; organic
International Standard Serial Number (ISSN)
2059-8521
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Springer; Materials Research Society, All rights reserved.
Publication Date
01 Jan 2020
