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相关概念视频

Imaging Biological Samples with Optical Microscopy01:18

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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相关实验视频

Updated: Jun 11, 2025

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT
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在斜平面显微镜中的自适应光学.

Conor Mcfadden1,2, Zach Marin1,3, Bingying Chen1,2

  • 1Lyda Hill Department for Bioinformatics, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA.

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概括
此摘要是机器生成的。

适应光学 (AO) 纠正斜平面显微镜 (OPM) 中的偏差,这是一种3D光片光显微镜技术. 这简化了系统,并改善了像斑马鱼胚胎这样的生物样本的成像.

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科学领域:

  • 生物医学光学 生物医学光学
  • 显微镜的使用方法
  • 光学工程是指光学工程.

背景情况:

  • 适应光学 (AO) 通过纠正光学偏差来提高显微镜中的成像分辨率.
  • 光板光显微镜 (LSFM) 是一种3D成像技术,但在单独的照明和检测路径中的偏差使性能复杂化.
  • 斜平面显微镜 (OPM) 提供了一种简化的LSFM方法,使用单一的目标镜头.

研究的目的:

  • 研究适应光学 (AO) 在斜平面显微镜 (OPM) 中的应用,以改进3D成像.
  • 展示一个简化的AO系统,同时纠正照明和检测路径中的偏差.
  • 评估 AO 校正 OPM 对生物样本成像分辨率和信号强度的影响.

主要方法:

  • 在OPM系统的照明和检测路径中实现单个可变形镜来同时纠正偏差.
  • 利用投影成像模式来稳定和增强无传感器AO配置中的波面校正.
  • 在光纳米球上测试了AO-OPM系统,并对斑马鱼胚胎进行了实时成像.

主要成果:

  • 在OPM中AO校正恢复了超越表面层的成像的衍射限制分辨率.
  • 一个可变形镜成功地纠正了照明和检测路径中的偏差,简化了显微镜的设置.
  • AO-OPM系统提高了信号强度的两倍,并增强了光板和焦点平面之间的对齐.
  • 斑马鱼血管和癌细胞的成像显示了该系统对先进的生物研究的能力.

结论:

  • 适应光学显著提高了斜平面显微镜的性能,通过简化偏差校正.
  • 在OPM中的AO恢复了光学质量,并改善了信号检测,使生物标本的3D成像更深入,更清晰.
  • 这种集成的AO-OPM方法为生物和生物医学研究中先进的3D光显微镜提供了强大的工具.