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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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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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Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

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Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
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相关实验视频

Updated: May 8, 2025

Phase Contrast and Differential Interference Contrast DIC Microscopy
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Phase Contrast and Differential Interference Contrast DIC Microscopy

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非线性差异干扰对比成像对比成像

Fei Lin, Ling Hong, Yu Zhang

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    此摘要是机器生成的。

    研究人员开发了非线性DIC成像,以克服红外照明的挑战. 这种新的上转换技术可视化红外相信息,促进生物研究和医学诊断.

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    Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
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    Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy
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    相关实验视频

    Last Updated: May 8, 2025

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    Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
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    Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy
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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 生物医学成像技术 生物医学成像技术
    • 非线性光学是非线性光学.

    背景情况:

    • 差异干扰对比 (DIC) 成像对于生物研究和医学诊断至关重要.
    • 由于相机的局限性,直接红外 (IR) DIC成像具有挑战性,尽管它在各种领域急需.
    • 现有的DIC方法与红外线照明作斗争,阻碍了需要深层组织透或降低光毒性的应用.

    研究的目的:

    • 开发一种用于直接红外DIC成像的新方法.
    • 克服当前DIC技术在红外频谱中的局限性.
    • 为了使相位对比成像使用红外照明用于先进显微镜.

    主要方法:

    • 利用非线性光学断路效应创建一个非线性光束移位器 (NBD).
    • 在NBD中使用两种四边形级联的I型非线性晶体.
    • 在红外物体光束和光束之间实现非线性合,以产生可见光.

    主要成果:

    • 通过非线性向上转换,成功地从一个红外光束中生成了两个直角偏振的可见光束.
    • 通过控制光束极化,实现了DIC成像的侧向剪切干扰.
    • 通过非线性DIC.使用红外照明对象的可视化相间断.

    结论:

    • 引入非线性DIC成像,使得红外相位信息能够向上转换为可见光谱.
    • 该NBD方案有效地克服了IR DIC成像的局限性.
    • 这一突破为红外相位显微镜和在生命科学和诊断领域的更广泛应用铺平了道路.