Toward meta-atom library: experimental validation of machine-learning-based Mie-tronics

Natalia M. Litchinitser; Hooman Barati Sedeh; Renee George; Fangxing Lai; Wenhao Li; Yuruo Zheng; Jiannan Gao; Dmitrii Tsvetkov; Shumin Xiao; Jingbo Sun

doi:10.1117/12.3031836

3 October 2024 Toward meta-atom library: experimental validation of machine-learning-based Mie-tronics

Natalia M. Litchinitser, Hooman Barati Sedeh, Renee George, Fangxing Lai, Wenhao Li, Yuruo Zheng, Jiannan Gao, Dmitrii Tsvetkov, Shumin Xiao, Jingbo Sun

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Proceedings Volume PC13109, Metamaterials, Metadevices, and Metasystems 2024; PC1310909 (2024) https://doi.org/10.1117/12.3031836
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

We report an experimental validation of a machine learning-based design method that significantly accelerates the development of all-dielectric complex-shaped meta-atoms supporting specified Mie-type resonances at the desired wavelength, circumventing the conventional time-consuming approaches. We used machine learning to design isolated meta-atoms with specific electric and magnetic responses, verified them within the quasi-normal mode expansion framework, and explored the effects of the substrate and periodic arrangements of such meta-atoms. Since the implemented method allowed for the swift transition from design to fabrication, the optimized meta-atoms were fabricated, and their corresponding scattering spectra were measured using white light spectroscopy, demonstrating an excellent agreement with the theoretical predictions.

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Natalia M. Litchinitser, Hooman Barati Sedeh, Renee George, Fangxing Lai, Wenhao Li, Yuruo Zheng, Jiannan Gao, Dmitrii Tsvetkov, Shumin Xiao, and Jingbo Sun "Toward meta-atom library: experimental validation of machine-learning-based Mie-tronics", Proc. SPIE PC13109, Metamaterials, Metadevices, and Metasystems 2024, PC1310909 (3 October 2024); https://doi.org/10.1117/12.3031836

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KEYWORDS

Machine learning

Design

Atmospheric particles

Light scattering

Mie scattering

Aerosols

Spectroscopy

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