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Investigation of the effect of spatial dispersion in a metal shell of a non-spherical magnetoplasmonic nanoparticleстатья
- Авторы: Eremin Yu A., Lopushenko V.V.
- Журнал: Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
- Том: 130
- Номер: 10
- Год издания: 2022
- Издательство: Optical Society of America
- Местоположение издательства: United States
- Номер статьи: 1596
- DOI: 10.21883/OS.2022.10.53632.3849-22
- Аннотация: Based on the method of discrete sources, the effect of spatial dispersion on the absorption of electromagnetic energy in the metal shell of a magnetoplasmonic nanoparticle is studied. A hybrid particle is composed of a Fe3O4 or Fe2O3 magnetic core and a gold shell. The influence of the elongation of spheroidal particles on the level of energy absorption is considered. It is shown that taking into account the spatial dispersion in the shell leads to a decrease in the absorption cross section to 30% and is accompanied by a shift of the plasmon resonance to the short wavelength region up to 25 nm. It has been established that averaging the absorption cross section over the directions of propagation and polarizations of external excitation leads to a threefold decrease in the level of absorbed energy.
- Добавил в систему: Лопушенко Владимир Васильевич