Plasmonics in cubic Au crystals

Jeong-Eun Park

doi:10.1117/12.2675888

5 October 2023 Plasmonics in cubic Au crystals

Jeong-Eun Park

Proceedings Volume PC12654, Enhanced Spectroscopies and Nanoimaging 2023; PC126540J (2023) https://doi.org/10.1117/12.2675888
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Plasmonics utilize light-matter interaction at a dimension smaller than the wavelength of light. Due to their flexible shapes and geometries, metal-based plasmonic materials can be a reliable tool for obtaining desired plasmonic near- and far-field properties. In this talk, I will first introduce the highly controlled synthesis of gold nanocubes. The strategy relies on surface-protecting agents-dependent growth kinetics control and shape-selective flocculation process, which yielded exquisite control over the shape with an ultrahigh yield exceeding 98%. In this manner, structural fine-tuning is translated into controllability and high uniformity of optical signals. Adapting the concept of plasmon hybridization theory, I also developed plasmonic cube-in-cube nanoparticles where the coupling between core and shell supports super-radiant plasmon modes with an increased radiative damping rate. As a result, the cube-in-cube nanoparticles showed the highest photoluminescence quantum yield reported for metallic nanostructures without photobleaching or photoblinking.

Conference Presentation

Citation Download Citation

Jeong-Eun Park "Plasmonics in cubic Au crystals", Proc. SPIE PC12654, Enhanced Spectroscopies and Nanoimaging 2023, PC126540J (5 October 2023); https://doi.org/10.1117/12.2675888

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