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相关概念视频

Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Ultrasound II: Endoscopic Ultrasound and FibroScan01:25

Ultrasound II: Endoscopic Ultrasound and FibroScan

Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):

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相关实验视频

Updated: Jul 11, 2026

Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM
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Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM

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基于多核纤维和压缩成像的Speckle波测仪.

Huan Liu, Haole Kong, Jiajun He

    Applied optics
    |January 31, 2024
    PubMed
    概括

    研究人员使用七核光纤 (SCF) 和多模光纤 (MMF) 开发了一种具有成本效益的光纤波量计. 这种新的方法避免了昂贵的相机用于精确的波长测量,从而使光学传感的应用更广泛.

    科学领域:

    • 光学物理学 光学物理学
    • 光纤光学是指光纤的使用.
    • 计量学 计量学 计量学

    背景情况:

    • 多模纤维 (MMF) 中的斑点图案提供了宝贵的光信息.
    • 传统的基于斑点的光谱仪/波量计通常依赖于昂贵而缓慢的摄像机.
    • 摄像机的局限性阻碍了光通信,计量学和传感等领域的应用.

    研究的目的:

    • 开发一种使用光纤的经济高效且强大的波测仪.
    • 为了克服基于摄像头的斑点分析的局限性.
    • 增强光学传感和计量学的波长测量能力.

    主要方法:

    • 将七核纤维 (SCF) 与MMF融合在一起,以捕获斑点图案.
    • 利用SCF的空间分割多重复合与光学开关用于各种斑点生成.
    • 采用卷积神经网络 (CNN) 回归算法进行斑点数据分析.

    主要成果:

    • 实现了高波长分辨率,可以分辨下午1点的相邻波长.
    • 显示了大约0.2分钟的低测量误差.
    • 研究了货币市场基金长度对波长分辨率的影响.

    结论:

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    • 介绍了一种强大且具有成本效益的波长测量设备.
    • 成功利用SCF和CNN进行先进的斑点分析.
    • 拟议的方法为基于摄像头的光学传感系统提供了可行的替代方案.