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5 March 2022 Tuning plasmons of doped indium oxide nanostructures via nanometric gaps
Yina Wu, Andrea Konecná, Jordan A. Hachtel, F. Javier García de Abajo
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Proceedings Volume PC12002, Oxide-based Materials and Devices XIII; PC1200201 (2022) https://doi.org/10.1117/12.2609494
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Fluorine-doped indium oxide (IO) nanocubes separated by nanometric gaps constitute a versatile system hosting high-quality mid-infrared plasmons with potential application in optoelectronics and light harvesting. In this theory-experiment combined work, we predict large tunability of these hybridized plasmon modes by controlling the gap size and the dimensionality of the gap region. We confirm this prediction through electron energy-loss spectroscopy (EELS) measurements performed in a scanning transmission electron microscope (STEM). Our theorical-experimental results elucidate the influence of gap geometry on the coupled plasmons and field concentration in doped IO nanostructures, and further suggest exciting applications in plasmonic sensing and surface-enhanced spectroscopies.
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Yina Wu, Andrea Konecná, Jordan A. Hachtel, and F. Javier García de Abajo "Tuning plasmons of doped indium oxide nanostructures via nanometric gaps", Proc. SPIE PC12002, Oxide-based Materials and Devices XIII, PC1200201 (5 March 2022); https://doi.org/10.1117/12.2609494
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KEYWORDS
Plasmons
Nanostructures
Indium oxide
Information operations
Spectroscopy
Nanoparticles
Plasmonics
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