Light-enhanced molecular polarity enabling multispectral color-cognitive memristor for neuromorphic visual system
Abstract An optoelectronic synapse having a multispectral color-discriminating ability is an essential prerequisite to emulate the human retina for realizing a neuromorphic visual system. Several studies based on the three-terminal transistor architecture have shown its feasibility; however, its imp...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-09-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-41419-y |
| _version_ | 1797558241323909120 |
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| author | Jongmin Lee Bum Ho Jeong Eswaran Kamaraj Dohyung Kim Hakjun Kim Sanghyuk Park Hui Joon Park |
| author_facet | Jongmin Lee Bum Ho Jeong Eswaran Kamaraj Dohyung Kim Hakjun Kim Sanghyuk Park Hui Joon Park |
| author_sort | Jongmin Lee |
| collection | DOAJ |
| description | Abstract An optoelectronic synapse having a multispectral color-discriminating ability is an essential prerequisite to emulate the human retina for realizing a neuromorphic visual system. Several studies based on the three-terminal transistor architecture have shown its feasibility; however, its implementation with a two-terminal memristor architecture, advantageous to achieving high integration density as a simple crossbar array for an ultra-high-resolution vision chip, remains a challenge. Furthermore, regardless of the architecture, it requires specific material combinations to exhibit the photo-synaptic functionalities, and thus its integration into various systems is limited. Here, we suggest an approach that can universally introduce a color-discriminating synaptic functionality into a two-terminal memristor irrespective of the kinds of switching medium. This is possible by simply introducing the molecular interlayer with long-lasting photo-enhanced dipoles that can adjust the resistance of the memristor at the light-irradiation. We also propose the molecular design principle that can afford this feature. The optoelectronic synapse array having a color-discriminating functionality is confirmed to improve the inference accuracy of the convolutional neural network for the colorful image recognition tasks through a visual pre-processing. Additionally, the wavelength-dependent optoelectronic synapse can also be leveraged in the design of a light-programmable reservoir computing system. |
| first_indexed | 2024-03-10T17:27:33Z |
| format | Article |
| id | doaj.art-899f2c9c70074ce394a223293678cbe1 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-10T17:27:33Z |
| publishDate | 2023-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-899f2c9c70074ce394a223293678cbe12023-11-20T10:07:34ZengNature PortfolioNature Communications2041-17232023-09-0114111910.1038/s41467-023-41419-yLight-enhanced molecular polarity enabling multispectral color-cognitive memristor for neuromorphic visual systemJongmin Lee0Bum Ho Jeong1Eswaran Kamaraj2Dohyung Kim3Hakjun Kim4Sanghyuk Park5Hui Joon Park6Department of Organic and Nano Engineering, Hanyang UniversityDepartment of Organic and Nano Engineering, Hanyang UniversityDepartment of Chemistry, Kongju National UniversityDepartment of Organic and Nano Engineering, Hanyang UniversityDepartment of Organic and Nano Engineering, Hanyang UniversityDepartment of Chemistry, Kongju National UniversityDepartment of Organic and Nano Engineering, Hanyang UniversityAbstract An optoelectronic synapse having a multispectral color-discriminating ability is an essential prerequisite to emulate the human retina for realizing a neuromorphic visual system. Several studies based on the three-terminal transistor architecture have shown its feasibility; however, its implementation with a two-terminal memristor architecture, advantageous to achieving high integration density as a simple crossbar array for an ultra-high-resolution vision chip, remains a challenge. Furthermore, regardless of the architecture, it requires specific material combinations to exhibit the photo-synaptic functionalities, and thus its integration into various systems is limited. Here, we suggest an approach that can universally introduce a color-discriminating synaptic functionality into a two-terminal memristor irrespective of the kinds of switching medium. This is possible by simply introducing the molecular interlayer with long-lasting photo-enhanced dipoles that can adjust the resistance of the memristor at the light-irradiation. We also propose the molecular design principle that can afford this feature. The optoelectronic synapse array having a color-discriminating functionality is confirmed to improve the inference accuracy of the convolutional neural network for the colorful image recognition tasks through a visual pre-processing. Additionally, the wavelength-dependent optoelectronic synapse can also be leveraged in the design of a light-programmable reservoir computing system.https://doi.org/10.1038/s41467-023-41419-y |
| spellingShingle | Jongmin Lee Bum Ho Jeong Eswaran Kamaraj Dohyung Kim Hakjun Kim Sanghyuk Park Hui Joon Park Light-enhanced molecular polarity enabling multispectral color-cognitive memristor for neuromorphic visual system Nature Communications |
| title | Light-enhanced molecular polarity enabling multispectral color-cognitive memristor for neuromorphic visual system |
| title_full | Light-enhanced molecular polarity enabling multispectral color-cognitive memristor for neuromorphic visual system |
| title_fullStr | Light-enhanced molecular polarity enabling multispectral color-cognitive memristor for neuromorphic visual system |
| title_full_unstemmed | Light-enhanced molecular polarity enabling multispectral color-cognitive memristor for neuromorphic visual system |
| title_short | Light-enhanced molecular polarity enabling multispectral color-cognitive memristor for neuromorphic visual system |
| title_sort | light enhanced molecular polarity enabling multispectral color cognitive memristor for neuromorphic visual system |
| url | https://doi.org/10.1038/s41467-023-41419-y |
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