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相关概念视频

Shearing Strain01:20

Shearing Strain

The shearing strain represents a cubic element's angular change when subjected to shearing stress. This type of stress can transform a cube into an oblique parallelepiped without influencing normal strains. The cubic element experiences a significant transformation when exposed solely to shearing stress. Its shape alters from a perfect cube into a rhomboid, clearly demonstrating the effect of shearing strain. The degree of this strain is considered positive if it reduces the angle between the...
Shear on the Horizontal Face of a Beam Element01:16

Shear on the Horizontal Face of a Beam Element

To understand shear on the flat side of a prismatic beam element, consider the vertical and horizontal shearing forces, and the normal forces, acting on the element. The element's upper (U) and lower (L) sections, which are divided by the beam's neutral axis, are examined. The equilibrium of these forces is determined by applying the equilibrium equation, which helps identify the horizontal shearing force. This force is directly related to the bending moments and the cross-section's first...

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相关实验视频

Updated: Jun 10, 2026

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
11:47

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

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高清四波横切切干扰测试高清四波干扰测试

Benoit Wattellier, Anaïs Saintoyant, Julien Savatier

    Journal of the Optical Society of America. A, Optics, image science, and vision
    |January 31, 2025
    PubMed
    概括
    此摘要是机器生成的。

    我们使用一项新的四波横切切干扰技术增强了定量相位成像. 这种方法产生超高分辨率的图像,达到550万像素,这是有史以来最大的波面传感器.

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    Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays
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    Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

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    相关实验视频

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    Real-time Monitoring of High Intensity Focused Ultrasound HIFU Ablation of In Vitro Canine Livers Using Harmonic Motion Imaging for Focused Ultrasound HMIFU
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    Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays
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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 显微镜的使用方法
    • 图像处理 图像处理

    背景情况:

    • 定量相成像 (QPI) 对于无标签显微镜至关重要.
    • 现有的QPI技术往往在空间分辨率和像素数量方面面临限制.
    • 波面传感对于准确的相位检索至关重要.

    研究的目的:

    • 引入一个先进的四波横向剪切干扰测量 (QWLSI) 方法.
    • 显著提高定量阶段图像的像素定义和分辨率.
    • 为了证明产生超大像素数相位图像的能力.

    主要方法:

    • 使用一个衍射格子移动到摄像机前面.
    • 线性结合至少9个获得的干涉图.
    • 实施QWLSI的演变,以增强相位检索.

    主要成果:

    • 实现了550万像素的定量相位图像.
    • 在校准和生物样本上展示了高分辨率成像.
    • 生产的图像与像素数量匹配的录音摄像头.

    结论:

    • 开发的QWLSI技术在相对比显微镜中实现了前所未有的图像分辨率.
    • 这一进步提供了迄今为止任何波面传感器产生的最大的像素数相位图像.
    • 该技术具有在各种显微镜应用中进行详细分析的巨大潜力.