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Related Concept Videos

Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
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Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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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.
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Surface profiling with scanning optical microscopes using two-mode optical fibers.

R Juskaitis, T Wilson

    Applied Optics
    |August 21, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel scanning optical microscope using a dual-mode optical fiber. It achieves linear surface height response for noncontacting profilometry, enabling detailed surface analysis.

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    Area of Science:

    • Optical Microscopy
    • Nanotechnology
    • Surface Metrology

    Background:

    • Traditional surface profilometry methods can be limited by contact or resolution.
    • Optical microscopy offers noncontact measurement but often struggles with linearity and complex surfaces.

    Purpose of the Study:

    • To develop a scanning optical microscope system with enhanced linearity for surface height measurement.
    • To enable noncontact surface profilometry for specimens with uniform and varying reflectivity.

    Main Methods:

    • Utilizing a laterally offset optical fiber supporting two modes.
    • Detecting the interference between the two optical fiber modes.
    • Implementing a feedback system for intensity-coded height imaging on non-uniform surfaces.

    Main Results:

    • Demonstrated a linear response to surface height within the focal region.
    • Achieved readily obtainable noncontacting surface profilometry for uniform reflectivity specimens.
    • Successfully obtained surface profiles and intensity-coded height images for varied reflectivity specimens using a feedback system.

    Conclusions:

    • The proposed scanning optical microscope system effectively provides linear surface height response.
    • The system enables versatile noncontact surface profilometry, adaptable to different specimen types.
    • This technique offers a promising approach for advanced surface characterization.