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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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Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
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相关实验视频

Updated: Jul 26, 2025

Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
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使用定量相位显微镜进行热光学测量.

Nicholaus Kevin Tanjaya, Keiichiro Toda, Takuro Ideguchi

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    此摘要是机器生成的。

    本研究引入了一种使用定量相显微镜 (QPM) 测量透明材料的导热率和热光系数 (TOC) 的新方法. 该技术为材料表征提供了一个更简单的方法.

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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 材料科学 材料科学 材料科学
    • 热力工程是热力工程中的一个.

    背景情况:

    • 定量相位显微镜 (QPM) 可视化了透明材料中的相位变化.
    • 激光加热可以改变这些相位移,提供一种潜在的测量途径.
    • 对于材料应用而言,精确的热特性表征至关重要.

    研究的目的:

    • 为了同时确定透明基板的导热率和热光系数 (TOC).
    • 开发一种基于QPM的方法,用于高效地测量材料属性.
    • 为了验证该方法的准确性和更广泛应用的潜力.

    主要方法:

    • 使用定量相显微镜 (QPM) 设置与外部加热激光.
    • 用薄薄的化薄膜涂覆透明基板,用于光热热量产生.
    • 采用基于传热和热光效应的半分析建模来提取材料特性.

    主要成果:

    • 实现了同时测量导热率和TOC.
    • 提取的导热率和TOC值显示出合理的一致性.
    • 该方法证明了对各种透明基板的特性有潜力.

    结论:

    • 开发的基于QPM的技术提供了一种简洁有效的方法,用于同时确定热性质.
    • 简单的建模和设置比现有技术具有优势.
    • 这种方法对表征各种透明材料的导热率和TOC具有前景.