Work

Surface integral formulation for 3D simulations of plasmonic and high permittivity nanostructures

Year: 2009

Type: article

Abstract: Among the most popular approaches used for simulating plasmonic systems, the discrete dipole approximation suffers from poorly scaling volume discretization and limited near-field accuracy. We demonstrate that transformation to a surface integral formulation improves scalability and convergence and provides a flexible geometric approximation allowing, e.g., to investigate the influence of fabrication accuracy. The occurring integrals can be solved quasi-analytically, permitting even rapidly changing fields to be determined arbitrarily close to a scatterer. This insight into the extreme near-field behavior is useful for modeling closely packed particle ensembles and to study "hot spots" in plasmonic nanostructures used for plasmon-enhanced Raman scattering.

Source: Journal of the Optical Society of America A

DOI: 10.1364/josaa.26.000732

Authors: Andreas M. Kern, Olivier J. F. Martin

Institution: École Polytechnique Fédérale de Lausanne

Language: English

Topic: Plasmonic and Surface Plasmon Research

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Awards: Plasmon resonances of 3D nanoparticles, Pathogenesestudien im Zusammenhang mit Virus-Zell- interaktionen unter besonderer Berücksichtigung der Viruspersistenz und virusinduzierter Autoimmu-