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High-Throughput Total Internal Reflection Fluorescence and Direct Stochastic Optical Reconstruction Microscopy Using a Photonic Chip
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Coherent total internal reflection dark-field microscopy: label-free imaging beyond the diffraction limit.

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    Area of Science:

    • Microscopy
    • Optical Imaging
    • Biophysics

    Background:

    • Coherent imaging in life sciences is limited by interference artifacts.
    • Conventional microscopy struggles with resolving fine structures.

    Purpose of the Study:

    • To utilize interference artifacts for improved image resolution and contrast.
    • To develop a super-resolution imaging technique for live-cell microscopy.

    Main Methods:

    • Dark-field microscopy with evanescent illumination via total internal reflection.
    • Incoherent averaging of multiple coherent images from different illumination directions.
    • Analytical modeling and numerical simulations.

    Main Results:

    • High-contrast imaging of coherently scattering samples.
    • Resolution beyond the diffraction limit for 190 nm beads.
    • Demonstration of increased object distance resolution.

    Conclusions:

    • Interference artifacts can be leveraged to enhance microscopy.
    • The developed technique offers a path to fast, label-free, super-resolution live-cell imaging.