Interaction of nanoparticles with substrates: effects on the dipolar behaviour of the particles.
In this work, we present a numerical analysis of the surface electric field of a metallic nanoparticle (either 2D or 3D) interacting with a flat substrate underneath. The influence of the distance to the substrate, particle size, the surrounding media and the substrate optical properties is analyzed as a function of the incident wavelength. We show that these are crucial factors that change the field distribution associated to the dipolar behavior of the particle. A useful parameter for illustrating the changes in the angular distribution is theta(max), the angle at which the maximum of the surface electric field is located.
Moreno
F
F
Departamento de Física Aplicada, Grupo de Optica, Universidad de Cantabria, Santander, Spain.
García-Cámara
B
B
Saiz
J M
JM
González
F
F
D003198:Computer Simulation; D004574:Electromagnetic Fields; D008027:Light; D008962:Models, Theoretical; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*