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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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Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects
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使用聚焦白光萨格纳克干扰计进行无针孔点衍射动态相位成像.

Ana Karen Reyes, Jose Escamilla Angeles, Noel-Ivan Toto-Arellano

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    此摘要是机器生成的。

    这项研究引入了一种新的萨格纳克干扰仪,用于一次性定量相位成像 (QPI). 该系统在没有针孔的情况下实现点衍射式干扰,使透明样品能够获得高灵敏度的相位检索.

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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 干涉测量是干涉测量的方法.
    • 阶段成像成像技术 阶段成像

    背景情况:

    • 定量阶段成像 (QPI) 对于分析透明样品至关重要.
    • 传统方法通常需要针孔或复杂的设置,限制吞吐量和稳定性.
    • 开发强大,高灵敏度,一次性QPI技术仍然是一个活跃的研究领域.

    研究的目的:

    • 介绍一款新型的融合光束白光萨格纳克干扰仪,用于单次射击QPI.
    • 为了在没有针孔的情况下实现点衍射式干扰.
    • 为透明的样本分析展示一个强大的,高吞吐量平台.

    主要方法:

    • 使用了收光束白光萨格纳克干扰仪配置.
    • 在焦平面上引入一个样本,以不对称地修改反传播光束.
    • 采用迈克尔森型复制器,使用彩色CMOS传感器一次性捕获相位移干扰图.

    主要成果:

    • 在没有针孔的情况下产生点衍射式干扰.
    • 实现了一次性定量相位成像,具有共同路径稳定性和宽带兼容性.
    • 在薄膜,酒精蒸发和火焰中成功检索了静态和动态相位分布.
    • 确定CMOS传感器的绿色通道是相位检索中最可靠的.

    结论:

    • 开发的萨格纳克干扰仪为单次射击,高灵敏度QPI提供了一个强大的平台.
    • 没有针孔的设计增强了稳定性和吞吐量.
    • 该技术适用于各种透明样品,包括动态过程.