Nanocrystal self-assembly for optical metasurfaces

Andrea Tao

doi:10.1117/12.3003052

13 March 2024 Nanocrystal self-assembly for optical metasurfaces

Andrea Tao

Proceedings Volume PC12897, High Contrast Metastructures XIII; PC128970R (2024) https://doi.org/10.1117/12.3003052
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Self-assembly provides a powerful approach for fabricating metasurfaces using bespoke colloidal nanocrystals (NCs) whose sizes, shapes, and surface chemistry can be rationally designed to achieve complex, heterogeneous, and hierarchical photonic architectures. I will present our group’s work in the area of NC assembly for plasmonic metasurfaces, where shaped metal NCs serve as the building blocks for resonant optical nanojunctions. We have demonstrated that metal NCs can be assembled into large-scale periodic arrays using interfacial assembly, or into more exquisite architectures (e.g. chains, lattices) using entropy-driven steric forces. Uniquely, these metal NCs possess single-crystalline surfaces with low roughness that enable the generation of low-loss structures that support phenomena such as intense electromagnetic field localization, non-linear optical response, and inelastic electron tunneling.

Conference Presentation

Citation Download Citation

Andrea Tao "Nanocrystal self-assembly for optical metasurfaces", Proc. SPIE PC12897, High Contrast Metastructures XIII, PC128970R (13 March 2024); https://doi.org/10.1117/12.3003052

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