红外光敏感的CuSbS2光电子人造突触使高精度的彩色图像识别和分类成为可能
Jianping Lan1, Haiying Zhou2, Hailong Li3
1School of Intelligent Connected Vehicle, Hubei University of Automotive Technology, Shiyan 442002, China.
The Journal of chemical physics
|December 1, 2025
概括
铜硫化物 (CuSbS2) 能够实现新的近红外光电子突触记忆器,以实现高效的神经形态计算. 这些设备模仿大脑功能,在图像识别任务中实现高精度.
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.
- 计算机工程 计算机工程
背景情况:
- 神经形态计算需要高效的人工突触来进行感知和记忆.
- 光电子突触记忆元集成光和电信号,用于先进的计算.
- 开发新材料对于高性能的人工突触器件至关重要.
研究的目的:
- 引入铜硫化物 (CuSbS2) 作为近红外 (NIR) 光电子突触记忆体的材料.
- 为了研究基于CuSbS2的设备的突触可塑性仿真能力.
- 为了评估神经形态系统的性能,利用这些人工突触进行视觉任务.
主要方法:
- 基于CuSbS2的memristor的制造,表现出双极电阻切换.
- 使用电信号和NIR光来模拟突触行为的设备的刺激.
- 实现一个神经形态计算系统用于色彩图像识别和分类.
主要成果:
- CuSbS2记忆器显示出稳定的非挥发性电阻切换,具有高开/关比 (~99) 和耐久性 (>10^4秒).
- 这些设备成功模拟了各种突触可塑性行为,包括短期潜能/抑郁和尖端时间依赖的可塑性.
- 一个基于CuSbS2的memristor系统在彩色图像识别中实现了92.3%的准确性,证明了高效的学习速率调节.
结论:
- CuSbS2是NIR光电子人造突触的有希望的材料,可以推进神经形态计算.
- 开发的设备整合了传感,存储和处理以获得大脑启发的AI.
- 这项工作为智能视觉感知和未来的人工智能系统提供了一个新的材料平台.
相关概念视频
01:22Photoreceptors and Visual Pathways
8.6K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
8.6K
02:00Photoreceptors and Plant Responses to Light
28.2K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
28.2K
01:24Vision
59.2K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
59.2K
01:11Channel Rhodopsins
3.1K
Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
3.1K