Optoelectronic resistive random access memory for neuromorphic vision sensors

Neuromorphic visual systems have considerable potential to emulate basic functions of the human visual system even beyond the visible light region. However, the complex circuitry of artificial visual systems based on conventional image sensors, memory and processing units presents serious challenges...

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Bibliographic Details
Published in:Nature nanotechnology Vol. 14; no. 8; pp. 776 - 782
Main Authors: Zhou, Feichi, Zhou, Zheng, Chen, Jiewei, Choy, Tsz Hin, Wang, Jingli, Zhang, Ning, Lin, Ziyuan, Yu, Shimeng, Kang, Jinfeng, Wong, H-S Philip, Chai, Yang
Format: Journal Article
Language:English
Published: England Nature Publishing Group 01.08.2019
Subjects:
Artificial Organs
BASIC (programming language)
Bionics - instrumentation
Circuits
Edge computing
Equipment Design
Flight simulation
Humans
Information processing
Internet of Things
Light
Memory devices
Object recognition
Optoelectronic devices
Power consumption
Random access memory
Sensors
Vision, Ocular
Visual system
ISSN:1748-3387, 1748-3395, 1748-3395
Online Access:Get full text
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Summary:Neuromorphic visual systems have considerable potential to emulate basic functions of the human visual system even beyond the visible light region. However, the complex circuitry of artificial visual systems based on conventional image sensors, memory and processing units presents serious challenges in terms of device integration and power consumption. Here we show simple two-terminal optoelectronic resistive random access memory (ORRAM) synaptic devices for an efficient neuromorphic visual system that exhibit non-volatile optical resistive switching and light-tunable synaptic behaviours. The ORRAM arrays enable image sensing and memory functions as well as neuromorphic visual pre-processing with an improved processing efficiency and image recognition rate in the subsequent processing tasks. The proof-of-concept device provides the potential to simplify the circuitry of a neuromorphic visual system and contribute to the development of applications in edge computing and the internet of things.
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ISSN:1748-3387
1748-3395
1748-3395
DOI:10.1038/s41565-019-0501-3