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Related Concept Videos

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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...
X-ray Crystallography02:18

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Related Experiment Video

Updated: Jun 23, 2026

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
10:12

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

Diffracting aperture based differential phase contrast for scanning X-ray microscopy.

Burkhard Kaulich, Francois Polack, Ulrich Neuhaeusler

    Optics Express
    |May 20, 2009
    PubMed
    Summary

    A new differential phase contrast (DPC) method for X-ray microscopy requires no extra optics. This technique enhances imaging contrast for low-absorbing materials by adjusting aperture alignment, proving effective in synchrotron experiments.

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    Last Updated: Jun 23, 2026

    Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
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    Synthesis and Microdiffraction at Extreme Pressures and Temperatures

    Published on: October 7, 2013

    Area of Science:

    • X-ray microscopy
    • Phase contrast imaging
    • Mesoscopic imaging

    Background:

    • Zone plate-based scanning X-ray microscopes image heterogeneous matter at mesoscopic scales.
    • Low absorbing materials present imaging challenges due to poor contrast.

    Purpose of the Study:

    • To implement differential phase contrast (DPC) in a zone plate-based scanning X-ray microscope without additional optical components.
    • To enhance the imaging contrast of low-absorbing specimens.

    Main Methods:

    • Implemented DPC by adjusting the positioning and alignment of microscope apertures.
    • Utilized the non-uniform intensity wave front produced by aperture diffraction.
    • Recorded signals with a pinhole photodiode sensitive to phase changes.

    Main Results:

    • Achieved DPC without adding new optical elements to the scanning X-ray microscope.
    • Demonstrated a significant increase in image contrast (up to 20%) for low-absorbing specimens.
    • Validated the technique using a scanning X-ray microscope at the European Synchrotron Radiation Facility (ESRF) at 6 keV.

    Conclusions:

    • The novel DPC method is feasible and effective for X-ray microscopy.
    • This technique offers a substantial contrast enhancement, comparable to Nomarski's differential interference contrast in light microscopy.
    • The method simplifies DPC implementation, making it more accessible for imaging challenging samples.