Volume 19, Issue 25 2205893
Research Article

Learning and Predicting Photonic Responses of Plasmonic Nanoparticle Assemblies via Dual Variational Autoencoders

Muammer Y. Yaman

Muammer Y. Yaman

Department of Chemistry, University of Washington, Seattle, WA, 98195 USA

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Sergei V. Kalinin

Sergei V. Kalinin

Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN, 37996 USA

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Kathryn N. Guye

Kathryn N. Guye

Department of Chemistry, University of Washington, Seattle, WA, 98195 USA

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David S. Ginger

Corresponding Author

David S. Ginger

Department of Chemistry, University of Washington, Seattle, WA, 98195 USA

Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354 USA

E-mail: [email protected]; [email protected]

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Maxim Ziatdinov

Corresponding Author

Maxim Ziatdinov

Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831 USA

Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831 USA

E-mail: [email protected]; [email protected]

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First published: 21 March 2023
Citations: 12

Abstract

The application of machine learning is demonstrated for rapid and accurate extraction of plasmonic particles cluster geometries from hyperspectral image data via a dual variational autoencoder (dual-VAE). In this approach, the information is shared between the latent spaces of two VAEs acting on the particle shape data and spectral data, respectively, but enforcing a common encoding on the shape-spectra pairs. It is shown that this approach can establish the relationship between the geometric characteristics of nanoparticles and their far-field photonic responses, demonstrating that hyperspectral darkfield microscopy can be used to accurately predict the geometry (number of particles, arrangement) of a multiparticle assemblies below the diffraction limit in an automated fashion with high fidelity (for monomers (0.96), dimers (0.86), and trimers (0.58). This approach of building structure-property relationships via shared encoding is universal and should have applications to a broader range of materials science and physics problems in imaging of both molecular and nanomaterial systems.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are openly available in https://github.com/ziatdinovmax/dualVAE at https://github.com/ziatdinovmax/dualVAE, reference number 1.

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