Coupled resonance via localized surface plasmon polaritons in Iridium-based refractory metamaterials
| Autor: | Thomas E. Vandervelde, Minsu Oh, Emily S. Carlson |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Computer Science Physics::Optics General Physics and Astronomy 02 engineering and technology 010402 general chemistry 01 natural sciences Photovoltaics Physics::Atomic and Molecular Clusters Polariton General Materials Science Plasmon business.industry Resonance Metamaterial General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Computational Mathematics Wavelength Mechanics of Materials Optoelectronics 0210 nano-technology business Excitation Localized surface plasmon |
| Zdroj: | Computational Materials Science. 197:110598 |
| ISSN: | 0927-0256 |
| DOI: | 10.1016/j.commatsci.2021.110598 |
| Popis: | Plasmonic metamaterials (MMs) have enabled their novel applications across numerous engineering fields ranging from photodetecting to bio-imaging, cancer diagnosis, and photovoltaics. However, as a vast majority of reported plasmonic MMs are based on materials with a relatively low melting point such as Au or Ag, their utilities are limited for lower-temperature applications. Thus, realizing plasmonic resonance based on refractory materials will further extend their applications to higher-temperature environments. In this work, we numerically report plasmonic MMs built with Ir and HfO2, which are well-known highly refractory materials. These plasmonic MMs resonate selectively based on the excitation of localized surface plasmon polaritons and magnetic resonances. The wavelength where resonance occurs can be modulated by changing the width of the top metal of the structure. Moreover, we find that the resonance wavelength and the top metal’s width are in a polynomial relationship over the wavelength range studied. Therefore, with the tunable properties, the refractory plasmonic MMs in this work present a potential to extend the utilities of plasmonic devices for higher-temperature applications. |
| Databáze: | OpenAIRE |
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