https://doi.org/10.1051/epjconf/202430905012
Refractometric sensing with plasmon resonances in dimer, trimer and quadrumer ensembles of gold nanoparticles
National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
* Corresponding author: istvan.toth@itim-cj.ro
Published online: 31 October 2024
We studied by FDTD computer simulations the dependence of the surface plasmon resonances in linearly arranged gold nanospheres on incident light polarization, spheres number and diameter, and interparticle gap. The observed scattering spectra of large particles show a particularly interesting behaviour, with coupled plasmon resonances that can be either red or blue shifting with the modification of the interparticle gap. The sensitivity of the various observed coupled plasmon modes to refractive index variations is then evaluated.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
