Optoelectronic graded neurons for bioinspired in-sensor motion perception

Chen, Jiewei; Zhou, Zheng; Kim, Beom Jin; Zhou, Yue; Wang, Zhaoqing; Wan, Tianqing; Yan, Jianping; Kang, Jinfeng; Ahn, Jong Hyun; Chai, Yang

doi:10.1038/s41565-023-01379-2

Cited by 142 publications

(65 citation statements)

References 33 publications

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“…Recently, the application of synaptic photodetectors was expanded to dynamically moving objects for improving the efficiency of motion perception (Figure 4c, (vi)). 88 The object's moving direction could be inferred by utilizing the afterimages of moving objects, generated by synaptic photodetectors.…”

Section: Artificial Vision Systems Based On Nanomaterialsmentioning

confidence: 99%

Nanomaterial-Based Artificial Vision Systems: From Bioinspired Electronic Eyes to In-Sensor Processing Devices

Choi,

Lee,

Chang

et al. 2024

ACS Nano

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High-performance robotic vision empowers mobile and humanoid robots to detect and identify their surrounding objects efficiently, which enables them to cooperate with humans and assist human activities. For error-free execution of these robots' tasks, efficient imaging and data processing capabilities are essential, even under diverse and complex environments. However, conventional technologies fall short of meeting the high-standard requirements of robotic vision under such circumstances. Here, we discuss recent progress in artificial vision systems with high-performance imaging and data processing capabilities enabled by distinctive electrical, optical, and mechanical characteristics of nanomaterials surpassing the limitations of traditional silicon technologies. In particular, we focus on nanomaterial-based electronic eyes and insensor processing devices inspired by biological eyes and animal visual recognition systems, respectively. We provide perspectives on key nanomaterials, device components, and their functionalities, as well as explain the remaining challenges and future prospects of the artificial vision systems.

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Section: Artificial Vision Systems Based On Nanomaterialsmentioning

confidence: 99%

Nanomaterial-Based Artificial Vision Systems: From Bioinspired Electronic Eyes to In-Sensor Processing Devices

Choi,

Lee,

Chang

et al. 2024

ACS Nano

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“…To explore the capability of motion recognition by artificial visual systems in complicated environments, Chai and colleagues developed an optoelectronic graded neuron for agile in‐sensor motion perception inspired by insect visual systems. [ 156 ] The prepared phototransistor array allowed direct sensing and encoding of spatiotemporal motion information at the single‐pixel level and detecting of motion trajectories in the visual field. Notably, the motion perception at different speeds could be achieved by modulating charge‐trapping dynamics of artificially graded neurons.…”

Section: Osds Based On Organic Semiconductor/halide Perovskite Hetero...mentioning

confidence: 99%

Optoelectronic Synapses and Photodetectors Based on Organic Semiconductor/Halide Perovskite Heterojunctions: Materials, Devices, and Applications

Guo

Zhang

et al. 2023

Adv Funct Materials

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Both photodetectors (PDs) and optoelectronic synaptic devices (OSDs) are optoelectronic devices converting light signals into electrical responses. Optoelectronic devices based on organic semiconductors and halide perovskites have aroused tremendous research interest owing to their exceptional optical/electrical characteristics and low‐cost processability. The heterojunction formed between organic semiconductors and halide perovskites can modify the exciton dissociation/recombination efficiency and modulate the charge‐trapping effect. Consequently, organic semiconductor/halide perovskite heterojunctions can endow PDs and OSDs with high photo responsivity and the ability to simulate synaptic functions respectively, making them appropriate for the development of energy‐efficient artificial visual systems with sensory and recognition functions. This article summarizes the recent advances in this research field. The physical/chemical properties and preparation methods of organic semiconductor/halide perovskite heterojunctions are briefly introduced. Then the development of PDs and OSDs based on organic semiconductor/halide perovskite heterojunctions, as well as their innovative applications, are systematically presented. Finally, some prospective challenges and probable strategies for the future development of optoelectronic devices based on organic semiconductor/halide perovskite heterojunctions are discussed.

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“…Diodes, on the other hand, are mainly used as rectifiers, photovoltaic cells, and high-speed photodetectors (PDs). − The devices designed with transistors as a sensing unit possess the advantages of signal amplification and low power consumption. These devices are often utilized for chemical and biological sensing applications. ,,− Furthermore, the computing function can be introduced to the transistor-type sensor to be used as in-sensor computing applications. , …”

Section: Challenges In 2d Materials-based Flexible Electronicsmentioning

confidence: 99%

2D Materials in Flexible Electronics: Recent Advances and Future Prospectives

Katiyar,

Hoang,

et al. 2023

Chem. Rev.

Self Cite

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Flexible electronics have recently gained considerable attention due to their potential to provide new and innovative solutions to a wide range of challenges in various electronic fields. These electronics require specific material properties and performance because they need to be integrated into a variety of surfaces or folded and rolled for newly formatted electronics. Two-dimensional (2D) materials have emerged as promising candidates for flexible electronics due to their unique mechanical, electrical, and optical properties, as well as their compatibility with other materials, enabling the creation of various flexible electronic devices. This article provides a comprehensive review of the progress made in developing flexible electronic devices using 2D materials. In addition, it highlights the key aspects of materials, scalable material production, and device fabrication processes for flexible applications, along with important examples of demonstrations that achieved breakthroughs in various flexible and wearable electronic applications. Finally, we discuss the opportunities, current challenges, potential solutions, and future investigative directions about this field.

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Optoelectronic graded neurons for bioinspired in-sensor motion perception

Cited by 142 publications

References 33 publications

Nanomaterial-Based Artificial Vision Systems: From Bioinspired Electronic Eyes to In-Sensor Processing Devices

Nanomaterial-Based Artificial Vision Systems: From Bioinspired Electronic Eyes to In-Sensor Processing Devices

Optoelectronic Synapses and Photodetectors Based on Organic Semiconductor/Halide Perovskite Heterojunctions: Materials, Devices, and Applications

2D Materials in Flexible Electronics: Recent Advances and Future Prospectives

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