Details

Autor(en) / Beteiligte

• Chen, Kang
• Pan, Keyuan
• He, Shang
• Liu, Rui
• Zhou, Zhe
• Zhu, Duoyi
• Liu, Zhengdong
• He, Zixi
• Sun, Hongchao
• Wang, Min
• Wang, Kaili
• Tang, Minghua
• Liu, Juqing

Titel

Mimicking Bidirectional Inhibitory Synapse Using a Porous‐Confined Ionic Memristor with Electrolyte/Tris(4‐aminophenyl)amine Neurotransmitter

Ist Teil von

• Advanced science, 2024-05, Vol.11 (19), p.e2400966-n/a

Ort / Verlag

Germany: John Wiley & Sons, Inc

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• Ionic memristors can emulate brain‐like functions of biological synapses for neuromorphic technologies. Apart from the widely studied excitatory‐excitatory and excitatory‐inhibitory synapses, reports on memristors with the inhibitory‐inhibitory synaptic behaviors remain a challenge. Here, the first biaxially inhibited artificial synapse is demonstrated, consisting of a solid electrolyte and conjugated microporous polymers bilayer as neurotransmitter, with the former serving as an ion reservoir and the latter acting as a confined transport. Due to the migration, trapping, and de‐trapping of ions within the nanoslits, the device poses inhibitory synaptic plasticity under both positive and negative stimuli. Remarkably, the artificial synapse is able to maintain a low level of stable nonvolatile memory over a long period of time (≈60 min) after multiple stimuli, with feature‐inferencing/‐training capabilities of neural node in neuromorphic computing. This work paves a reliable strategy for constructing nanochannel ionic memristive materials toward fully inhibitory synaptic devices. A bidirectional inhibitory synapse is presented in the vertical porous‐confined ionic memristor with electrolyte EV(ClO4)2 coated microporous tris(4‐aminophenyl)amine as neurotransmitter. The synaptic cell exhibits inhibitory plasticity under both positive and negative pulses due to porous‐confined ion migration for trapping and detrapping.