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- W4387345095 abstract "Abstract Interactions of gold and silver spherical nanoparticles (NPs) of a wide range of radius size with tightly focused beams are investigated for a wide range of wavelengths. The scattering of tightly focused beams with a single NP of varying size is examined using a generalized Mie theory and average intensity enhancement in the near-field due to localized surface plasmons is examined for different tightly focused beams. A multipole expansion approach is used to observe the contribution of modes in shaping the scattered light intensity. Influence of particle size and tightly focused beam on intensity enhancement factor is investigated and a shift in localized surface plasmon resonance (LSPR) peak towards higher wavelength is observed with increasing particle size. Maximum intensity enhancement factor due to scattering of different incident beams by a metallic NP is theoretically examined and reported. Gold and silver NP having radius size of ranging from 30-60nm and 1-15nm respectively showed a maximum intensity enhancement factor in different media. A significant enhancement for the tightly focused radially polarized beam is observed for gold and silver NPs of radius size between 50nm and 100nm. Variation towards higher wavelength in LSPR peak due to involvement of higher order of multipoles, and the surrounding medium are also examined in detail." @default.
- W4387345095 created "2023-10-05" @default.
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- W4387345095 date "2023-10-04" @default.
- W4387345095 modified "2023-10-06" @default.
- W4387345095 title "Tightly focused linearly and radially polarized beam effect on the LSPR peak with varying particle size" @default.
- W4387345095 doi "https://doi.org/10.1088/1402-4896/acfffb" @default.
- W4387345095 hasPublicationYear "2023" @default.
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