Bioinspired Flexible, Dual‐Modulation Synaptic Transistors toward Artificial Visual Memory Systems

• DOI: 10.1002/admt.201900888
• Publication Date: 2019-11-27T07:53:56Z
• Authors: Fuqin Sun; Qifeng Lu; Lin Liu; Lianhui Li; Yingyi Wang; Mingming Hao; Zhiguang Cao; Zihao Wang; Shuqi Wang; Tie Li; Ting Zhang
• Keywords: Neuromorphic engineering

Abstract A prominent challenge for artificial synaptic devices toward perception systems is hardware redundancy, which demands neuromorphic that integrate both sensing and processing functions. Inspired by the biological visual nervous systems, a novel flexible, dual‐modulation field‐effect transistor (SFET) demonstrated in this work. The flexible SFET constructed with zinc oxide nanowires sodium alginate, acts as semiconductor layer gate dielectric, respectively. An excitatory postsynaptic current synapse can be triggered electrical ultraviolet stimuli presynaptic spikes result of electric double effect photoelectric effect. More importantly, through co‐modulation light stimuli, memory level synapses tuned based on transformation between short‐term plasticity long‐term initiated voltage. Different voltages modulate retention levels optical inputs similar to function optic nerve system. underlying mechanisms are investigated using Fourier transform infrared spectroscopy, photoluminescence, X‐ray photoelectron spectroscopy. Overall, provide idea mimic memory, showing promising strategy future electronic eyes.