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Minimalist Mie coefficient model.

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    Area of Science:

    • Electromagnetism and Optics
    • Materials Science

    Background:

    • Mie coefficients describe light scattering by spheres.
    • Existing expressions are complex and limited to non-absorbing materials.

    Purpose of the Study:

    • To derive simplified Mie coefficient expressions for absorbing spheres.
    • To explore parameter space for specific functionalities in spherical scatterer systems.

    Main Methods:

    • Developed new analytical expressions for Mie coefficients.
    • Investigated absorption cross-section upper bounds for electric dipolar spheres.
    • Designed a trimer structure for maximal absorption.

    Main Results:

    • Presented novel, simplified Mie coefficient expressions for absorbing spheres.
    • Identified an upper bound for absorption cross-section.
    • Designed an indium tin oxide (ITO) trimer with maximal absorption.

    Conclusions:

    • The new expressions simplify analysis of light scattering from absorbing spheres.
    • The approach enables the design of optical materials with tailored absorption properties.
    • This method is applicable to higher-order scattering terms and various spherical scatterer systems.