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3 October 2022 Plasma frequency tuning of epsilon-near-zero metafilm with ITO-SiO2 multilayer structure
Jimmy H. Ni
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Proceedings Volume PC12195, Metamaterials, Metadevices, and Metasystems 2022; PC121950I (2022) https://doi.org/10.1117/12.2633619
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
In this summary, we report an experimental demonstration of plasma frequency tuning of a multilayer-based ENZ metafilm. The demonstrated ENZ metafilm consists of alternating layers of ITO and SiO2. The optical properties, such as the effective plasma frequency and damping coefficients, of the demonstrated metafilm were controlled by changing the volume fraction of the metal layer. The measured effective permittivity values from an ellipsometry analysis show good agreement with the calculated results using a simple Maxwell-Garnett effective medium theory.
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Jimmy H. Ni "Plasma frequency tuning of epsilon-near-zero metafilm with ITO-SiO2 multilayer structure", Proc. SPIE PC12195, Metamaterials, Metadevices, and Metasystems 2022, PC121950I (3 October 2022); https://doi.org/10.1117/12.2633619
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KEYWORDS
Multilayers
Plasma
Annealing
Dielectrics
Ellipsometry
Near infrared
Transmittance
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