Localized Surface Plasmon Resonances with Spherical Metallic Nanoparticles

Abstract

In this work we review in part of our recent theoretical study on the electrical intensity enhancement in the dielectric medium surrounding metallic nanoparticles due to the effect of their localized surface plasmon resonance (LSPR). The known results in the case of a simple metallic spherical nanoparticle are presented and then extend them to the general case of complex network of the identical spherical metallic nanoparticles. For illustration, several typical lattices of identical spherical metallic nanoparticles will be treated. The findings of electrical intensity enhancements and plasmonic resonance wavelengths of the single and the network of the metallic nanoparticles are obtained based on the analytical expressions. The theoretical results were compared and shown the good agreement with simulation results. The simulation of the LSPRs and the electrical intensity enhancements was performed using the boundary element method.

Light-Sheet Skew Ray-Enhanced Localized Surface Plasmon Resonance-Based Chemical Sensing

“…Such a small diameter can offer one order of magnitude of local evanescent-field enhancement compared with the 50 nm diameter. 25 A wavelength of 532 nm was selected for efficient pumping of the fluorophores and nanospheres at a relatively low cost. Fluorescence is not considered as a detected parameter because the inline design introduces significant scattering and reabsorption losses at each reflection that prevents the build-up of fluorescence.…”

“…The gold nanospheres of 10 nm diameter used for this experiment exhibited an absorption peak around 510 nm. Such a small diameter can offer one order of magnitude of local evanescent-field enhancement compared with the 50 nm diameter . A wavelength of 532 nm was selected for efficient pumping of the fluorophores and nanospheres at a relatively low cost.…”

Assessing Plasmonic Nanoprobes in Electromagnetic Field Enhancement for SERS Detection of Biomarkers

“…The simulations were based on dimer models in terms of the electromagnetic field intensities with spherical gold and magnetic core-gold shell nanoparticles [3,24] such as the dimer model of nanoparticles formed via capture antibody (Ab1)-antigen detection antibody (Ab2) binding. The nanoparticles could be Au nanoparticles, magnetic nanoparticle (MNP) cores with Au shells (i.e., M@Au), or their combination with different sizes or shell thicknesses.…”