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相关概念视频

Super-resolution Fluorescence Microscopy01:37

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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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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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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.
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相关实验视频

Updated: Sep 13, 2025

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基于芯片的无标签不连贯超分辨率光学显微镜.

Nikhil Jayakumar1, Luis E Villegas-Hernández2, Weisong Zhao3

  • 1Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, 9037, Norway. nik.jay.hil@gmail.com.

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概括
此摘要是机器生成的。

研究人员开发了Evanescently衰变的光发光散射使无标签光学纳米镜 (EPSLON) 能够用于无标签超分辨率显微镜. 这种技术克服了无需样本标记的衍射极限,使得自然生物成像成为可能.

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科学领域:

  • 光学和光子学 在光学和光子学.
  • 生物物理学的生物物理.
  • 显微镜的使用方法

背景情况:

  • 超分辨率显微镜利用光分子绕过光学衍射极限.
  • 标记生物样本可以干扰微妙的细胞过程.
  • 现有的无标签方法与分散光相干性作斗争,阻碍了超分辨率应用.

研究的目的:

  • 开发一种超高分辨率的无标签显微镜技术,克服衍射极限.
  • 为了使生物样本在它们的原始状态下进行成像,而无需外源标签.
  • 适应现有的超高分辨率方法,用于无标签的成像.

主要方法:

  • 利用化波导的光发光 (PL) 进行近场照明.
  • 使用Evanescently衰变的光发光散射使无标签光学纳米镜 (EPSLON) 成为可能.
  • 展示模仿纳米尺寸光分子的照明特性,以实现不连贯性.

主要成果:

  • 在纳米珠上实现了~180nm的两点分辨率.
  • 在使用富里埃环相关性 (FRC) 的衍射极限上观察到1.9×到2.8×的分辨率改进.
  • 在各种生物样本上验证了该技术.

结论:

  • 通过产生不连贯的照明,EPSLON可以实现远场,无标签的超高分辨率成像.
  • 该技术允许在没有标签的情况下应用结构化照明显微镜 (SIM) 和基于强度波动的光学纳米镜 (IFON) 等方法.
  • 对于研究没有外源标签的生物系统来说,EPSLON代表了一项重大进展.