FTDT numerical calculatons of local plasmonic fields for multilayer gold nanoparticles-agents for theranostics

Igor I. Kon; Andrey Y. Zyubin; A. Y. Seteikin; I. G. Samusev

doi:10.1117/12.2555951

1 April 2020 FTDT numerical calculatons of local plasmonic fields for multilayer gold nanoparticles-agents for theranostics

Igor I. Kon, Andrey Y. Zyubin, A. Y. Seteikin, I. G. Samusev

Author Affiliations +

Proceedings Volume 11345, Nanophotonics VIII; 113452L (2020) https://doi.org/10.1117/12.2555951
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

The paper presents the results of FDTD (Finite-Difference Time-Domain) mathematical modeling of electromagnetic fields distortion near the surfaces of multilayered spherical gold nanoparticles (NPs). NPs were functionalized by two shells: water as a model substance for a drug and SiO₂, as a capsuling polymer. The field values were converted into the coefficient of the effective signal for Surface-Enhanced Raman Scattering (SERS). During the simulation, parameters such as NP size, thickness of surface layers, wavelength of exciting radiation and the dependence of the effective amplification of the electromagnetic field on the thickness of the polymer and water layers were studied. The prospects of the theoretical approach of nanocomplexes for problems of theranostics have been shown. The presented approach could be applied as a basis for performing methods of controlled chemical synthesis of colloidal theranostics NPs.

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Citation Download Citation

Igor I. Kon, Andrey Y. Zyubin, A. Y. Seteikin, and I. G. Samusev "FTDT numerical calculatons of local plasmonic fields for multilayer gold nanoparticles-agents for theranostics", Proc. SPIE 11345, Nanophotonics VIII, 113452L (1 April 2020); https://doi.org/10.1117/12.2555951

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