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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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相关实验视频

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扫描开关显微镜用于超分辨率光成像.

Zhaoshuai Gao1,2, Shangguo Hou3,4, Suhui Deng3,5

  • 1School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, 200240 Shanghai, China.

Nano letters
|September 19, 2024
PubMed
概括
此摘要是机器生成的。

扫描切换显微镜 (SSM) 通过使用光体闪来实现使用标准共聚焦显微镜的超高分辨率成像. 这种技术可以实现固定和活样本的100nm分辨率,从而提高了超高分辨率显微镜的可访问性.

关键词:
混焦显微镜 混焦显微镜暴露剂量 暴露剂量光子关闭效应是光子关闭效应.超高分辨率显微镜的使用

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科学领域:

  • 光学显微镜的使用方法
  • 生物物理学的生物物理.
  • 纳米技术纳米技术

背景情况:

  • 超分辨率 (SR) 显微镜突破了衍射极限,提供比传统光显微镜更高的分辨率.
  • 专用设备的复杂性和成本限制了SR显微镜的广泛采用.
  • 光子的闪或关闭反应是许多光分子的固有特性.

研究的目的:

  • 介绍一种新的超高分辨率成像概念,称为扫描切换显微镜 (SSM).
  • 为了证明SSM可以使用商业共聚焦显微镜实现超高分辨率,而无需专门的光学.
  • 通过理论计算和实验结果验证SSM方法.

主要方法:

  • 开发了扫描切换显微镜 (SSM) 的概念.
  • 利用光体的固有关闭反应用于图像重建.
  • 在DNA原始结构纳米结构和细胞细胞骨架上进行成像实验.
  • 使用Dronpa光蛋白实现了活细胞的超高分辨率成像.

主要成果:

  • 获得了大约100nm的成像分辨率,用于各种生物和纳米样本.
  • 成功成像固定样本,包括DNA原形和细胞细胞骨.
  • 展示了SSM对活细胞超分辨率成像的能力.
  • 用实验数据验证了SSM的理论模型.

结论:

  • SSM提供了一种实用的方法,用于使用随时可用的共焦显微镜进行超高分辨率成像.
  • 该方法利用光体的自然闪行为,简化了仪器仪表的要求.
  • SSM可适应各种基于激光扫描的显微镜,扩大其潜在的应用.