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A Hippocampus‐Inspired Dual‐Gated Organic Artificial Synapse for Simultaneous Sensing of a Neurotransmitter and Light
Author(s) -
Lee Hae Rang,
Lee Doyoung,
Oh Joon Hak
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202100119
Subject(s) - neuromorphic engineering , materials science , synapse , neuroscience , nanotechnology , computer science , artificial neural network , artificial intelligence , biology
Organic neuromorphic devices and sensors that mimic the functions of chemical synapses and sensory perception in humans have received much attention for next‐generation computing and integrated logic circuits. Despite recent advances, organic artificial synapses capable of detecting both neurotransmitters in liquid environments and light are not reported. Herein, inspired by hippocampal synapses, a dual‐gate organic synaptic transistor platform with a photoconductive polymer semiconductor, a ferroelectric insulator of P(VDF‐TrFE), and an extended‐gate electrode functionalized with boronic acid is developed to simultaneously detect the neurotransmitter dopamine and light. The developed synaptic transistor enables memory consolidation upon repetitive exposure to dopamine and polychromatic light, exhibiting effectively modulated postsynaptic currents. This proof‐of‐concept hippocampal‐synapse‐mimetic organic neuromorphic system combining a chemical sensor and a photosensor opens new possibilities for developing low‐power organic artificial synaptic multisensors and light‐induced memory consolidative artificial synapses, and can also contribute to the development of human–machine interfaces.