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Updated: Aug 8, 2026

Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy
Published on: June 5, 2019
Plasmon spectroscopy of metallic nanoparticles above flat dielectric substrates
F Moreno1, F González, J M Saiz
1Grupo de Optica, Departamento de Física Aplicada, Universidad de Cantabria, Avda, Los Castros, 39005 Santander, Spain. morenof@unican.es
Abstract:
We numerically analyze the spectral properties of localized plasmon resonances in metal nanoparticles when these are above a dielectric substrate. This analysis is performed as a function of the various parameters involved in the problem (relative optical properties, particle-substrate separation, angle of incidence, etc.). It can be shown that from the spectral behavior of the resonance in the far field, information about particle near-field interactions can be obtained.

