基于地理位置的可见红外双极浮动门光电晶体管用于宽频视网膜生物技术
Qiancui Zhang1, Yichi Zhang1,2, Xie Liu1
1Key Laboratory of Analog Integrated Circuits and Systems (Ministry of Education), School of Integrated Circuits, Xidian University, Xi'an, 710071, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|September 19, 2025
概括
研究人员开发了一种基于的新型光传感器,可以模仿可见光和近红外光的双极细胞功能. 这一突破推动了人工视网膜系统和图像处理,用于车辆和机器人的应用.
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:
- 视网膜中的双极细胞对于视觉信号处理至关重要,将信息分隔成ON和OFF通路.
- 目前的视觉系统仅限于可见光谱,限制双极细胞应用.
- 人工视网膜系统需要能够在更广泛的频谱中模仿生物视觉处理的组件.
研究的目的:
- 开发一种能够模仿广谱双极细胞功能的新型光电晶体管.
- 扩展双极细胞类设备的实用性,超越人工视网膜,到先进的图像处理.
- 创建一个单一的设备,展示双频光响应,用于增强视觉生物芯片.
主要方法:
- 制造一个基于 (Ge) 的浮式门化 (WSe2) 光传感器.
- 使用浮式门的电子/孔的非挥发性存储来调节WSe2通道特征.
- 采用不同的底门电压脉冲调制,以创建与多层石墨烯 (MLG) 对立的Schottky内置电场.
- 利用Ge的近红外 (NIR) 光吸收和光效应来实现双频光响应.
主要成果:
- WSe2光传感器表现出非挥发性双极特征.
- 该设备在可见光照明下表现出双极光响应,这是由于调制的Schottky内置电场.
- 光传感器通过利用Ge吸收和光成功显示了NIR双极光响应.
- 该设备模拟了视网膜双极细胞的神经生物功能,并通过卷积操作执行图像化.
结论:
- 一个基于Ge的WSe2光电晶体管成功模仿了广谱双极细胞的功能.
- 该设备具有独特的双频光响应,可以模拟视网膜神经功能.
- 这一进步具有显著的潜力,可以在自动驾驶汽车和机器人等应用中增强视觉生物芯片.
相关概念视频
Photoreceptors and Visual Pathways
8.8K
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,...
8.8K
The Retina
74.6K
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.
74.6K
Bipolar Junction Transistor
1.4K
Bipolar Junction Transistors (BJTs) are essential elements in electronic circuits, playing a crucial role in the functionality of amplifiers, memories, and microprocessors. These transistors can be designed as NPN or PNP based on their doping patterns. They consist of three layers: the emitter, base, and collector. The configuration of these layers and their respective doping levels—with N-type or P-type impurities—define the transistor's type and its operational...
1.4K
Anatomy of the Eyeball
9.5K
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...
9.5K
G-Protein Gated Ion Channels
5.6K
GPCRs are primarily responsible for our sense of smell, taste, and vision. The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory...
Sensory...
5.6K


