Investigation of the plasmon resonance of core-shell nanoparticle in the near-infrared region

Aijaz Ali, Qaisar Abbas Naqvi and Muhammad Abuzar Baqir

Journal of Electromagnetic Waves and Applications, 2019, vol. 33, issue 18, 2462-2475

Abstract: In this paper, we investigated the surface plasmon resonance of metallo-dielectric core-shell nanoparticle in the near-infrared (NIR) regime of the light. The wavelength-dependent permittivity of the metal has been deduced by the Lorentz-Drude (LD) model. We have analytically analyzed the polarizability and scattering cross-section of the core-shell nanoparticle in the NIR regime, i.e. 1400–3000 nm. The resonance has been attained due to the surface plasmon resonance (SPR) at the interface of the metal (with negative permittivity) and dielectric interface. Furthermore, the effects of core-shell radii on polarizability and scattering cross-section of core-shell nanoparticle have been taken up. It has been noticed that resonance can be altered by tailoring core-shell radii of the metallo-dielectric nanoparticle. Such a structure would be useful in integrated photonic applications.

Date: 2019
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DOI: 10.1080/09205071.2019.1685008

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