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On high-order FEM applied to canonical scattering problems in plasmonics
ETH Zurich, Electromagnetic Fields and Microwave Electronics Laboratory.
2011 (English)In: Journal of Computational and Theoretical Nanoscience, ISSN 1546-1955, Vol. 8, no 8, 1564-1572 p.Article in journal (Refereed) Published
Abstract [en]

In this paper a high-order finite element method with curvilinear elements is proposed for the simulation of plasmonic structures. Most finite element packages use low order basis functions and non-curved elements, which is very costly for demanding problems such as the simulation of nanoantennas. To enhance the performance of finite elements, we use curvilinear quadrilateral elements to calculate the near-field from an impinging plane wave with second order absorbing boundary conditions. The magnetic field amplitude on the surface of one object is compared with a computation based on a multiple multipole expansion. Moreover, the convergence behavior of p-FEM with absorbing boundary conditions motivate an adaptive strategy of polynomial degree enhancement and enlargement of the domain.

Place, publisher, year, edition, pages
2011. Vol. 8, no 8, 1564-1572 p.
Keyword [en]
surface plasmon resonance, finite element method, multiple multipole program, absorbing boundary conditions, curvilinear elements, high order basis functions, p-fem
National Category
Computational Mathematics
URN: urn:nbn:se:umu:diva-51436DOI: 10.1166/jctn.2011.1851OAI: diva2:481880
Available from: 2012-01-23 Created: 2012-01-23 Last updated: 2012-02-08

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Engström, Christian
Computational Mathematics

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