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相关概念视频

Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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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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相关实验视频

Updated: May 9, 2025

A Guide to Structured Illumination TIRF Microscopy at High Speed with Multiple Colors
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A Guide to Structured Illumination TIRF Microscopy at High Speed with Multiple Colors

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通过结构化照明,提高3D定位和3D定向的精度,同时实现3D定位和3D定向.

Zhengyi Zhan, Xiaofan Sun, Chenying He

    Optics letters
    |May 1, 2025
    PubMed
    概括

    V-SIMFLUX通过将顺序结构化照明 (SSI) 与点扩散函数 (PSF) 结合起来来增强分子成像. 这种新的方法可以提高3D定位和定向精度,而无需极化分裂.

    科学领域:

    • 超高分辨率显微镜的使用方法
    • 分子成像学分子成像学
    • 生物物理学的生物物理.

    背景情况:

    • 精确的3D分子位置和方向确定是至关重要的,但在有限的光子中具有挑战性.
    • 像调制照明显微镜这样的当前方法可以提高精度,但通常依赖于极化分裂,这是对信号与背景比率敏感的.
    • 顺序结构化照明 (SSI) 可以进一步损害现有方法的稳定性.

    研究的目的:

    • 开发一种可靠的方法,用于精确的3D分子定位和定向确定.
    • 为了克服超分辨率显微镜中偏振依赖检测的局限性.
    • 提高分子成像技术的精度,特别是在低信号条件下.

    主要方法:

    • 引入V-SIMFLUX,将顺序结构化照明 (SSI) 与旋转点传播功能 (PSF) 集成在一起.
    • 消除偏振分裂检测,降低对信号与背景比率的灵敏度.
    • 理论分析以评估V-SIMFLUX方法提供的精度改进.

    主要成果:

    • 对于所有估计的分子参数,V-SIMFLUX的精度提高了.
    • 与传统的广场照明相比,在横向定位精度上实现了典型的2.9倍的改进.
    • 在亚齐木斯通方向精度上表现出1.7倍的增强.

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    High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
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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:

    • V-SIMFLUX为3D分子定位和定位提供了一个强大而精确的方法.
    • 在没有极化分裂的情况下,SSI和Vortex PSF的集成显著提高了成像性能.
    • 这种技术提升了超分辨率显微镜的功能,用于分子规模的研究.