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Updated: Dec 14, 2025

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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Hard x-ray phase-contrast microscopy using a Gabor hologram without a zero-order term.

Kiyofumi Matsuda, Masato Yasumoto, Nahida Akter

    Applied Optics
    |July 17, 2020
    PubMed
    Summary
    This summary is machine-generated.

    This study developed a Gabor-type x-ray hologram microscopy to achieve nanometer resolution. A phase-contrast image of a 50 nm gold nanocube was successfully reconstructed with 19.8 nm resolution.

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    Area of Science:

    • X-ray microscopy
    • Diffraction optics
    • Nanotechnology

    Background:

    • Achieving nanometer-scale resolution is crucial for advanced imaging.
    • Gabor-type holography offers potential for high-resolution imaging.
    • Phase contrast techniques enhance visibility of transparent objects.

    Purpose of the Study:

    • To develop an x-ray microscopy system with nanometer-scale resolution.
    • To demonstrate the reconstruction of nanoscale objects using Gabor-type holography.
    • To implement phase contrast for improved imaging.

    Main Methods:

    • Utilized a Fresnel zone plate for strong object illumination.
    • Physically eliminated the zero-order diffraction using a center stop.
    • Numerically created a π/2 phase plate for phase-contrast imaging.

    Main Results:

    • Achieved a theoretical resolution of 19.8 nm.
    • Successfully reconstructed a 50 nm gold nanocube.
    • Demonstrated the effectiveness of the phase-contrast technique.

    Conclusions:

    • The developed Gabor-type x-ray hologram microscopy system enables nanometer-scale resolution.
    • The method is capable of reconstructing nanoscale objects with high fidelity.
    • Phase contrast imaging significantly improves the imaging capabilities of the system.