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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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Confocal Fluorescence Microscopy01:16

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,...
Scanning Electron Microscopy01:07

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
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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...

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Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping
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Published on: October 24, 2014

Scanning force microscope as a tool for studying optical surfaces.

J M Bennett, J Jahanmir, J C Podlesny

    Applied Optics
    |October 22, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Scanning force microscopy (SFM) reveals new details of optical surface defects like scratches and clumpiness on dielectric films. Understanding SFM characteristics is crucial for accurate optical surface analysis.

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    Area of Science:

    • Materials Science
    • Surface Science
    • Optical Engineering

    Background:

    • Optical surfaces require precise characterization for performance.
    • Scanning Force Microscopy (SFM) is a key technique for surface analysis.
    • Understanding SFM limitations is vital for interpreting results.

    Purpose of the Study:

    • To present novel SFM imaging of defects on optical surfaces.
    • To discuss critical SFM parameters for optical surface studies.
    • To enhance the understanding of SFM capabilities in optical metrology.

    Main Methods:

    • Utilized Scanning Force Microscopy (SFM) for high-resolution surface imaging.
    • Analyzed optical surfaces including polished, machined, and thin-film structures.
    • Investigated the impact of SFM operational parameters on image fidelity.

    Main Results:

    • Presented previously unreported images of raised surface scratches.
    • Documented surface clumpiness on extremely smooth dielectric films.
    • Detailed the influence of tip geometry, charging, contamination, and artifacts on SFM data.

    Conclusions:

    • SFM provides unprecedented insights into micro-scale defects on optical surfaces.
    • Careful consideration of SFM characteristics is essential for reliable optical surface metrology.
    • This study advances the application of SFM in characterizing advanced optical materials.