Аннотация
Spoof localized surface plasmon resonances (LSPRs) in the THz range are promising for bio-sensing and spectroscopy. Using long spiral grooves allows improving the surface mode confinement of LSPRs in the long-wavelength region. Our numerical simulations of sub-wavelength spiral gold disks in the range of 0.04-6 THz have shown that in case of Drude conductivity and normal incidence of EM radiation only the first- and second-order dipole localized surface plasmon resonances (LSPRs) are excited. High order resonances arise at inclined incidence. The spectra and 2D distributions of the EM field at the resonant frequencies depend on the number of spiral arms and symmetry of the spiral structure.
| Язык оригинала | английский |
|---|---|
| Номер статьи | 012048 |
| Число страниц | 4 |
| Журнал | Journal of Physics: Conference Series |
| Том | 1461 |
| Номер выпуска | 1 |
| DOI | |
| Состояние | Опубликовано - 23 апр 2020 |
| Событие | 4th International Conference on Metamaterials and Nanophotonics, METANANO 2019 - St. Petersburg, Российская Федерация Продолжительность: 15 июл 2019 → 19 июл 2019 |
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Цитировать
Gerasimov, V. V., Kuznetsov, S. A., Lemzyakov, A. G., & Hafizov, R. R. (2020). Studying localized surface plasmon resonances in the THz region for subwavelength spiral disks. Journal of Physics: Conference Series, 1461(1), [012048]. https://doi.org/10.1088/1742-6596/1461/1/012048