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Unveiling structured domains of persistent luminescent microparticles using second-harmonic generation microscopy.

Godofredo Bautista, Leevi Kallioniemi, Laeticia Petit

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    Summary
    This summary is machine-generated.

    Second-harmonic generation microscopy visualizes structured domains in persistent luminescent microparticles. This technique noninvasively studies materials embedded in glass, revealing new insights into their structure.

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    Area of Science:

    • Materials Science
    • Optics
    • Solid State Physics

    Background:

    • Persistent luminescent materials store and release energy as light.
    • Understanding the internal structure of these microparticles is crucial for optimizing their properties.
    • Current methods may struggle to noninvasively probe microparticle structures within matrices.

    Purpose of the Study:

    • To introduce and demonstrate second-harmonic generation (SHG) microscopy for analyzing persistent luminescent microparticles.
    • To investigate the internal structure of dysprosium- and europium-doped strontium aluminates.
    • To assess the potential of SHG microscopy for studying embedded microparticles.

    Main Methods:

    • Utilizing second-harmonic generation (SHG) microscopy.
    • Performing three-dimensional (3D) mapping of SHG signals.
    • Analyzing monoclinic dysprosium- and europium-doped strontium aluminates (SrAl2O4:Dy,Eu).

    Main Results:

    • Successfully visualized micrometer-sized structured domains within persistent luminescent microparticles for the first time.
    • Demonstrated the ability to map SHG signals in 3D.
    • Confirmed the presence of internal structures in both prepared and glass-embedded microparticles.

    Conclusions:

    • Second-harmonic generation microscopy is a powerful tool for noninvasively studying persistent luminescent microparticles.
    • The technique reveals previously unseen micro-structured domains.
    • SHG microscopy holds significant potential for analyzing diverse luminescent materials within various glass matrices.