Open AccessEffect of Geometrical Properties on Localized Surface Plasmon Resonance of Gold Nanoparticles
Author(s) -
Lam Duc Nguyen,
Quoc Trung Trinh,
Quang Bao Tu,
Nguyen Van Quynh,
Tung T. Hoang
Publication year - 2021
Publication title -
communications in physics/communications in physics
Language(s) - English
Resource type - Journals
eISSN - 2815-5947
pISSN - 0868-3166
DOI - 10.15625/0868-3166/15560
Subject(s) - surface plasmon resonance , materials science , plasmon , colloidal gold , scattering , nanoparticle , electric field , particle (ecology) , localized surface plasmon , surface plasmon , optics , molecular physics , nanotechnology , optoelectronics , chemistry , physics , oceanography , quantum mechanics , geology
This work reportson plasmonic effects (i.e light scattering and absorption properties) induced by two different gold nanoparticles (AuNPs)-shaped: spherical particle and triangular particle. The scattering cross-section and electric field profiles have been investigated by using theboundary element method (MNPBEM toolbox). Two configurations: the isolated AuNPand the coupledtwo-gold NPsystem have been considered to evaluate the localized surface plasmon resonance (LSPR) in eithersingle or coupled AuNPstructures. The effect of the surrounding medium on the scattering behavior of the NPs has also been examined. Then the dependence of “hotspot” intensity on the distance between two NPs has been recognized by mapping the electric field profile. The obtained results can be used as the guidelines for synthesizing AuNP structures to employ LSPR for sensing or other applications.