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Phase Contrast and Differential Interference Contrast Microscopy

Phase Contrast and Differential Interference Contrast Microscopy

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: Jul 16, 2025

Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope

Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope

Published on: April 7, 2014

在反射差干扰对比度 profilometry 的定量阶段幅度表面测定.

|September 14, 2023

概括

本研究提出了Nomarski差异干扰方法来测量表面形状,即使有不同的反射率. 该技术准确地测量了微机械和微系统元素.

科学领域:

光学计量学在光学计量学
表面的表征表征表面的表征
显微镜的使用方法

背景情况:

精确的表面造型对于微力学和微系统至关重要.
现有的方法可能会与表现出反射率不均的样本发生冲突.
不同干扰对比显微镜为增强表面分析提供了潜力.

研究的目的:

开发和验证Nomarski差异干扰方法,用于测量表面形状.
为了考虑光学系统中的偏振效应,包括非偏振光束分割器.
为了从干扰强度中准确地确定表面形状,即使采用可变的样本反射率.

主要方法:

使用诺马斯基差异干扰显微镜.
采用斯矩阵进行系统分析,并结合了极化效应.
开发了方程,从干扰强度数据中推导出表面形状.
通过在高反射率基板上测量附着的悬臂来验证该方法.

主要成果:

成功演示了一种用于测量具有反射变化的表面形状的方法.
验证了开发的测量方法的准确性和可靠性.
量化了偏振效应对测量系统的影响.

更多相关视频

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Published on: February 27, 2013

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

相关实验视频

Last Updated: Jul 16, 2025

Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope

Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope

Published on: April 7, 2014

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Published on: February 27, 2013

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

结论:

提出的诺马斯基差异干扰方法对于具有非均反射率的表面造型是有效的.
这种技术为检查微力学和微系统提供了有价值的工具.
结合斯矩阵和偏振分析,提高了测量准确度.