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相关概念视频

Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

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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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Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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相关实验视频

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Highly Resolved Intravital Striped-illumination Microscopy of Germinal Centers
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Highly Resolved Intravital Striped-illumination Microscopy of Germinal Centers

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快速有限差分解析器用于深层生物组织光学显微镜.

Thariq Shanavas, Robert R McLeod, Mark E Siemens

    Optics letters
    |August 2, 2024
    PubMed
    概括

    一个新的计算模型预测了深层组织显微镜中的光学散射效应. 它模拟了没有对轴近似的激光束降解,帮助在厚厚的生物样本中进行高分辨率成像.

    科学领域:

    • 生物物理学的生物物理.
    • 光学工程是指光学工程.
    • 计算成像技术的成像

    背景情况:

    • 生物组织中的光学散射限制了高分辨率显微镜的深度.
    • 精确的光传播建模对于先进的成像技术至关重要.

    研究的目的:

    • 开发一种计算模型,用于预测高分散介质中的显微镜性能.
    • 为了模拟激光束点传播功能 (PSF) 的恶化,而无需对轴近似.

    主要方法:

    • 对于高度分散的介质,解决麦克斯韦方程.
    • 模拟PSF降解用于各种扫描显微镜技术 (共聚焦,STED).
    • 使用宏观组织参数作为模型输入.

    主要成果:

    • 该模型准确地预测了在显微镜上散射的影响.
    • 它可以模拟高数值孔径 (NA) 目标镜头.
    • 在STED显微镜中比较Laguerre-Gaussian (LG) 和Hermite-Gaussian (HG) 束的证明应用.

    结论:

    • 开发的计算框架增强了深层组织显微镜的预测.

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  • 它为优化扫描显微镜技术提供了一种多功能工具.
  • 该方法使用可访问的组织参数简化了性能分析.