TY - JOUR
T1 - A Flexible and Biomimetic Olfactory Synapse with Gasotransmitter-Mediated Plasticity
AU - Deng, Yuping
AU - Zhao, Mingyou
AU - Ma, Yuan
AU - Liu, Shangbin
AU - Liu, Mingda
AU - Shen, Boyu
AU - Li, Rongfeng
AU - Ding, He
AU - Cheng, Huanyu
AU - Sheng, Xing
AU - Fu, Wangyang
AU - Li, Zehui
AU - Zhang, Milin
AU - Yin, Lan
N1 - Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2023/5/2
Y1 - 2023/5/2
N2 - Neuromorphic electronics has demonstrated great promise in mimicking the sensory and memory functions of biological systems. However, synaptic devices with desirable sensitivity, selectivity, and operational voltage imitating the olfactory system have rarely been reported. Here, a flexible and biomimetic olfactory synapse based on an organic electrochemical transistor (OECT) coupled with a breath-figure derived porous solid polymer electrolyte (SPE) is proposed. The device demonstrates excellent sensitivity with a ppb-level response limit and desirable selectivity toward hydrogen sulfide (H2S) over other gases, and successfully achieves wireless real-time detection of excessive concentration of H2S from rotten eggs. H2S-mediated synaptic plasticity is accomplished with the device and typical synaptic behaviors are realized, including short-term memory (STM), long-term memory (LTM), transition from STM to LTM, etc., enabling the imitation of potential cumulative damages upon H2S exposure. The proposed device paves new ways toward next-generation olfactory systems capable of sensing and memorizing functionalities mimicking neurobiological systems, offering critical materials strategies to accomplish intelligent artificial sensory systems.
AB - Neuromorphic electronics has demonstrated great promise in mimicking the sensory and memory functions of biological systems. However, synaptic devices with desirable sensitivity, selectivity, and operational voltage imitating the olfactory system have rarely been reported. Here, a flexible and biomimetic olfactory synapse based on an organic electrochemical transistor (OECT) coupled with a breath-figure derived porous solid polymer electrolyte (SPE) is proposed. The device demonstrates excellent sensitivity with a ppb-level response limit and desirable selectivity toward hydrogen sulfide (H2S) over other gases, and successfully achieves wireless real-time detection of excessive concentration of H2S from rotten eggs. H2S-mediated synaptic plasticity is accomplished with the device and typical synaptic behaviors are realized, including short-term memory (STM), long-term memory (LTM), transition from STM to LTM, etc., enabling the imitation of potential cumulative damages upon H2S exposure. The proposed device paves new ways toward next-generation olfactory systems capable of sensing and memorizing functionalities mimicking neurobiological systems, offering critical materials strategies to accomplish intelligent artificial sensory systems.
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U2 - 10.1002/adfm.202214139
DO - 10.1002/adfm.202214139
M3 - Article
AN - SCOPUS:85148631928
SN - 1616-301X
VL - 33
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 18
M1 - 2214139
ER -