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相关概念视频

Anatomy of the Eyeball01:20

Anatomy of the Eyeball

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The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
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The Retina01:32

The Retina

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The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.
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Patch Clamp Recording of Starburst Amacrine Cells in a Flat-mount Preparation of Deafferentated Mouse Retina
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人工阿马克林视网膜电路

Mohammad M Al Mahfuz1, Rakina Islam1, Dong-Kyun Ko1

  • 1Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, New Jersey 07102, United States.

ACS applied materials & interfaces
|August 22, 2024
PubMed
概括

研究人员开发了一种基于事件的新型成像传感器,使用简单的体量子点 (CQD) 电路. 这种生物灵感的人工视网膜只通过信号光变化来实现高速和能源效率,克服了传统机器视觉的局限性.

科学领域:

  • 材料科学 材料科学 材料科学
  • 神经科学是一个神经科学.
  • 电气工程 电气工程

背景情况:

  • 使用互补金属氧化物半导体 (CMOS) 技术的传统机器视觉技术面临速度和能源效率的限制.
  • 现有的基于事件的成像系统通常需要复杂的非常大规模集成 (VLSI) 电路.

研究的目的:

  • 为了展示一个简化的方法,以事件驱动的传感使用一个电阻,一个电容器 (1R1C) 电路.
  • 开发一种人工视网膜,模拟生物运动跟踪功能,以增强视觉信息处理.

主要方法:

  • 基于光电容器的体量子点 (CQD) 1R1C电路的制造和表征.
  • 使用CQD修改电容器以实现光响应.
  • 测试电路的性能参数,包括1550nm (短波红外线) 的光谱响应.

主要成果:

  • 通过使用CQDs的简单1R1C电路成功展示了事件驱动的传感.
  • 该电路模拟了生物视网膜对光强度变化的暂时尖峰反应.
  • 在短波红外 (SWIR) 区域实现了光谱响应.

结论:

  • 开发的CQD光电容器电路为基于事件的成像提供了一种简化和高效的方法.
关键词:
人工视网膜 人工视网膜合体量子点是一种量子点.事件摄像机事件摄像机运动跟踪 运动跟踪光电容器的光电容器

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  • 这项技术为将生物灵感视觉传感器扩展到中波和长波红外区域奠定了基础.
  • 这些发现为下一代节能机器视觉系统铺平了道路.