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相关概念视频

Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

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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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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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Total Internal Reflection Fluorescence Microscopy01:05

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Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
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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

Updated: May 24, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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继电投射显微镜望远镜.

Wenjun Yi1, Shuyue Zhu2,3, Meicheng Fu2

  • 1College of Science, National University of Defense Technology, Changsha, China. yiwenjun@nudt.edu.cn.

Light, science & applications
|March 6, 2025
PubMed
概括
此摘要是机器生成的。

一种新的成像方法,即继电投射显微望远镜 (rPMT),克服了距离和分辨率的限制. 该技术可实现高分辨率,非视线成像,用于生物医学和遥感应用.

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A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins
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科学领域:

  • 光学和光子学 在光学和光子学.
  • 影像科学 影像科学
  • 生物医学工程 生物医学工程

背景情况:

  • 空间分辨率和成像距离之间的权衡限制了生物医学诊断和遥感中的传统技术.
  • 现有的方法通常需要复杂的设置,标签或特定的扫描程序.
  • 非视线成像和克服衍射极限仍然是重大挑战.

研究的目的:

  • 引入一种新的概念方法,即继电投射显微望远镜 (rPMT),用于成像动态振幅相混合物体.
  • 为了证明rPMT在长距离上实现高分辨率成像的能力,超越了传统的限制.
  • 为各种应用提供简化,实用的成像系统.

主要方法:

  • 使用的非视线光采集使用方形法继电器投射机制.
  • 利用在中继屏幕上捕获的单一拍摄空间功率光谱图像.
  • 实施了一个包括激光二极管,便携式摄像头和分散反射白板的系统.

主要成果:

  • 在1019.0毫米处成功解析了2.76微米的特征,在26.4米处成功解析了22.10微米的特征,在96.0米处成功解析了35.08微米的特征.
  • 实现了7.9,25.4和58.2的分辨率改进系数,明显超过了阿贝衍射极限.
  • 通过散射介质展示了强大的成像,超过了聚焦范围的限制.

结论:

  • 继电投射显微望远镜 (rPMT) 提供了远距离,宽范围,高分辨率的成像能力.
  • 该方法通过避免标记,波面调制或复杂扫描来简化成像系统.
  • rPMT显示出无标签的生物医学成像和远程监控的显著前景.