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Updated: May 7, 2025

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Perovskite retinomorphic image sensor for embodied intelligent vision.

Zhilong He1, Hongxiao Duan1, Jianmin Zeng1,2

  • 1Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

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|January 3, 2025
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Summary

This study introduces a novel retinomorphic hardware prototype using a perovskite image sensor. This system enables robots to see, process, and respond to real-time visual data for enhanced embodied intelligence.

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Area of Science:

  • Robotics and Artificial Intelligence
  • Materials Science and Engineering
  • Neuroscience and Bio-inspired Computing

Background:

  • Exoskeleton robots require advanced vision systems for enhanced human assistance.
  • Current retinomorphic devices lack sensitivity, reconfigurability, and large-scale integration.
  • Developing efficient edge-processing algorithms is crucial for realizing retinomorphic hardware.

Purpose of the Study:

  • To develop a retinomorphic hardware prototype with embodied intelligent vision functionalities.
  • To create a system capable of real-time environmental perception and response.
  • To advance the capabilities of exoskeleton robots for assisting physically disabled individuals.

Main Methods:

  • Developed a 4096-pixel perovskite image sensor array as the core module.
  • Employed a one photodetector-one transistor geometry mimicking retinal circuits.
  • Implemented adaptive imaging with contrast enhancement and 1D feature extraction algorithms.

Main Results:

  • Achieved ~620% contrast enhancement under low-light conditions (10 microwatts/cm²).
  • Demonstrated broadband, ultrahigh, and reconfigurable photoresponsivities.
  • Successfully decomposed visual scenarios into encoded spatiotemporal information.

Conclusions:

  • The retinomorphic system provides embodied intelligence with adaptive imaging, in situ processing, and decision-making.
  • This technology holds significant potential for autonomous robot applications, particularly in assistive robotics.
  • The perovskite-based sensor array offers a scalable and effective solution for advanced robotic vision.