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Molecular Cocrystal Strategy for Retinamorphic Vision with UV-Vis-NIR Perception and Fast Recognition.

Xue-Mei Dong1, Chen Chen1, Yin-Xiang Li1

  • 1State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, China.

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Summary
This summary is machine-generated.

Researchers developed a novel organic nanowire sensor for artificial vision. This neuromorphic vision sensor mimics the retina, offering ultrawide light perception and efficient image recognition for advanced bioretina emulation.

Keywords:
Artificial photosynapseCocrystal nanowireColor recognitionNeuromorphic visionWideband perception

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Area of Science:

  • Materials Science
  • Neuroscience
  • Electrical Engineering

Background:

  • Neuromorphic vision sensors are crucial for bioretina emulation but face realization challenges.
  • Efficient multispectral perception and recognition are key requirements for these sensors.

Purpose of the Study:

  • To present a cocrystal strategy for an organic nanowire retinamorphic vision sensor.
  • To achieve UV-vis-NIR perception and fast recognition using this novel sensor.

Main Methods:

  • Fabrication of an organic nanowire sensor using a cocrystal strategy.
  • Leveraging molecular-scale donor-acceptor interpenetration and charge-transfer interfaces.
  • Integration with a convolutional neural network for image recognition.

Main Results:

  • The sensor demonstrated ultrawide photoperception (350-1050 nm), fast photoresponse (150 ms), high detectivity (8.2 × 10^12 Jones), and high responsivity (15 A W^-1).
  • Retina-like photosynaptic plasticity behaviors were observed.
  • Achieved 90% accuracy in recognizing colorful images when combined with a convolutional neural network.

Conclusions:

  • The cocrystal design is an effective method for creating high-performance nanowire photosynases.
  • This approach advances artificial visual systems and bioretina emulation.