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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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相关实验视频

Updated: Jun 27, 2025

Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
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使用渐变阻抗光学显微镜进行定量相位成像.

Jinming Zhang1, Mirsaeid Sarollahi1, Shirley Luckhart2,3

  • 1Department of Physics, University of Idaho, 875 Perimeter Drive, Moscow, ID, 83844, USA.

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概括
此摘要是机器生成的。

梯度延迟光学显微镜 (GROM) 能够对薄和厚的生物样本进行定量相位成像 (QPI). 这项创新增强了在散射环境中的成像对比度和细胞分析.

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科学领域:

  • 生物物理学的生物物理.
  • 光学显微镜的使用方法
  • 细胞成像 细胞成像

背景情况:

  • 定量相成像 (QPI) 对于测量干质量和密度等细胞代谢指标至关重要.
  • 由于散射,在光学厚的标本中QPI是有限的,这减少了对比度并增加了背景噪声.

研究的目的:

  • 引入渐变阻滞光学显微镜 (GROM) 用于薄和厚的生物样本的QPI.
  • 将标准的差异干扰对比 (DIC) 显微镜调整为QPI平台.

主要方法:

  • 格罗姆利用结构化照明干扰计原理.
  • 一个液晶减速器集成到DIC显微镜的照明路径中,以实现剪切光束的独立相位移.

主要成果:

  • GROM成功地在各种样本上进行了QPI,包括微生物,红细胞和光学厚的植物根 (高达300微米).
  • 该方法在不需要样本固定或清除的情况下运行.
  • 在平行成像模式中,GROM简化了配置,降低了成本,并避免了能量损失.

结论:

  • 格罗姆将QPI的适用性扩展到具有挑战性的光学厚度的生物样本.
  • 这种技术为先进的生物成像提供了一种成本效益高且简化的方法.
  • 格罗姆增强了复杂生物组织中细胞代谢和结构的研究.