PMID- 34957687
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20220301
LR  - 20220301
IS  - 2198-3844 (Electronic)
IS  - 2198-3844 (Linking)
VI  - 9
IP  - 6
DP  - 2022 Feb
TI  - Electrolyte-Gated Vertical Synapse Array based on Van Der Waals Heterostructure 
      for Parallel Computing.
PG  - e2103808
LID - 10.1002/advs.202103808 [doi]
LID - 2103808
AB  - Recently, three-terminal synaptic devices, which separate read and write 
      terminals, have attracted significant attention because they enable 
      nondestructive read-out and parallel-access for updating synaptic weights. 
      However, owing to their structural features, it is difficult to address the 
      relatively high device density compared with two-terminal synaptic devices. In 
      this study, a vertical synaptic device featuring remotely controllable weight 
      updates via e-field-dependent movement of mobile ions in the ion-gel layer is 
      developed. This synaptic device successfully demonstrates all essential synaptic 
      characteristics, such as excitatory/inhibitory postsynaptic current (E/IPSC), 
      paired-pulse facilitation (PPF), and long-term potentiation/depression (LTP/D) by 
      electrical measurements, and exhibits competitive LTP/D characteristics with a 
      dynamic range (G(max) /G(min) ) of 31.3, and asymmetry (AS) of 8.56. The 
      stability of the LTP/D characteristics is also verified through repeated 
      measurements over 50 cycles; the relative standard deviations (RSDs) of G(max) 
      /G(min) and AS are calculated as 1.65% and 0.25%, respectively. These excellent 
      synaptic properties enable a recognition rate of  approximately 99% in the training and 
      inference tasks for acoustic and emotional information patterns. This study is 
      expected to be an important foundation for the realization of future parallel 
      computing networks for energy-efficient and high-speed data processing.
CI  - (c) 2021 The Authors. Advanced Science published by Wiley-VCH GmbH.
FAU - Oh, Seyong
AU  - Oh S
AD  - Department of Electrical and Computer Engineering, Sungkyunkwan University, 
      Suwon, 16419, Korea.
FAU - Lee, Ju-Hee
AU  - Lee JH
AD  - Department of Electrical and Computer Engineering, Sungkyunkwan University, 
      Suwon, 16419, Korea.
FAU - Seo, Seunghwan
AU  - Seo S
AD  - Department of Electrical and Computer Engineering, Sungkyunkwan University, 
      Suwon, 16419, Korea.
FAU - Choo, Hyongsuk
AU  - Choo H
AD  - Department of Electrical and Computer Engineering, Sungkyunkwan University, 
      Suwon, 16419, Korea.
FAU - Lee, Dongyoung
AU  - Lee D
AD  - Department of Electrical and Computer Engineering, Sungkyunkwan University, 
      Suwon, 16419, Korea.
FAU - Cho, Jeong-Ick
AU  - Cho JI
AD  - Department of Electrical and Computer Engineering, Sungkyunkwan University, 
      Suwon, 16419, Korea.
FAU - Park, Jin-Hong
AU  - Park JH
AUID- ORCID: 0000-0001-8401-6920
AD  - Department of Electrical and Computer Engineering, Sungkyunkwan University, 
      Suwon, 16419, Korea.
AD  - Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan 
      University, Suwon, 16417, Korea.
LA  - eng
GR  - 2019M3F3A1A0107445113/National Research Foundation of Korea/
GR  - 2020R1A4A200280612/National Research Foundation of Korea/
GR  - 2020M3F3A2A0208247312/National Research Foundation of Korea/
GR  - 2021R1A2C201002611/National Research Foundation of Korea/
GR  - IO201210-07994-01/Samsung Electronics Co., Ltd/
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20211226
PL  - Germany
TA  - Adv Sci (Weinh)
JT  - Advanced science (Weinheim, Baden-Wurttemberg, Germany)
JID - 101664569
SB  - IM
PMC - PMC8867203
OTO - NOTNLM
OT  - hardware artificial neural networks
OT  - ion gel
OT  - parallel computing
OT  - synapse arrays
OT  - van der Waals heterostructures
OT  - vertical synaptic devices
COIS- The authors declare no conflict of interest.
EDAT- 2021/12/28 06:00
MHDA- 2021/12/28 06:01
PMCR- 2021/12/26
CRDT- 2021/12/27 06:55
PHST- 2021/11/11 00:00 [revised]
PHST- 2021/08/30 00:00 [received]
PHST- 2021/12/28 06:00 [pubmed]
PHST- 2021/12/28 06:01 [medline]
PHST- 2021/12/27 06:55 [entrez]
PHST- 2021/12/26 00:00 [pmc-release]
AID - ADVS3306 [pii]
AID - 10.1002/advs.202103808 [doi]
PST - ppublish
SO  - Adv Sci (Weinh). 2022 Feb;9(6):e2103808. doi: 10.1002/advs.202103808. Epub 2021 
      Dec 26.