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相关概念视频

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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Conducting Multiple Imaging Modes with One Fluorescence Microscope
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自动对焦富里埃单像素显微镜自动对焦

Zilin Deng, Shaoting Qi, Zibang Zhang

    Optics letters
    |November 15, 2023
    PubMed
    概括

    我们开发了一种用于富里埃单像素显微镜的快速自动对焦方法. 这种技术有效地找到焦点位置,而不需要捕获或重建完整的图像,增强在无形波段的可用性.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 显微镜技术 显微镜技术
    • 计算成像技术的成像

    背景情况:

    • 单像素显微镜 (SPM) 为成像微型样本提供了独特的功能,特别是在无形波段.
    • 准确的焦点确定对于高分辨率成像至关重要,但在SPM中具有挑战性,特别是在无形照明下.
    • 在看不见的波段中手动聚焦是不切实际的,耗时的.

    研究的目的:

    • 推出一种新的快速自动对焦方法,专门为里埃单像素显微镜 (FSPM) 设计.
    • 为了实现对焦位置的确定,而不需要完整的图像采集或重建.
    • 增强SPM的实际应用,特别是在挑战无形波段时.

    主要方法:

    • 开发了一个自动对焦算法,该算法基于一组有限的富里埃系数的大小总和.
    • 该方法通过分析特定的光谱信息来确定焦点,避免完全的图像处理.
    • 在可见和近红外光谱范围内使用FSPM进行实验验证.

    主要成果:

    • 拟议的自动对焦方法成功地迅速确定了最佳的对焦位置.
    • 在不重建整个样本图像的情况下,可以实现对焦的确定.
    • 该技术在可见和近红外成像中证明了对各种物体的有效性.

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    Single-Molecule Tracking Microscopy - A Tool for Determining the Diffusive States of Cytosolic Molecules
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    Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM
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    结论:

    • 开发的自动对焦方法显著提高了福里埃单像素显微镜的效率和实用性.
    • 这种方法克服了手动聚焦在无形波段的关键局限性.
    • 该方法扩大了SPM在各种科学和工业应用中的实用性.