Near-Field Properties of Plasmonic Nanostructures with High Aspect Ratio

Yacoub Ould Agha (1) , Olivier Demichel (1) , Christian Girard (2) , Alexandre Bouhelier (1) , Gérard Colas Des Francs (1)

1 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne
2 CEMES - Centre d'élaboration de matériaux et d'études structurales

Using the Green's dyad technique based on cuboidal meshing, we compute the electromagnetic field scattered by metal nanorods with high aspect ratio. We investigate the effect of the meshing shape on the numerical simulations. We observe that discretizing the object with cells with aspect ratios similar to the object's aspect ratio improves the computations, without degrading the convergency. We also compare our numerical simulations to finite element method and discuss further possible improvements.

Domaines: Physique [physics]

Yacoub Ould Agha, Olivier Demichel, Christian Girard, Alexandre Bouhelier, Gérard Colas Des Francs. Near-Field Properties of Plasmonic Nanostructures with High Aspect Ratio. Progress In Electromagnetics Research, 2014, 146, pp.77 - 88. ⟨10.2528/PIER14012904⟩. ⟨hal-01722838⟩