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Solutions of plasmonic structures using the multilevel fast multipole algorithm
Author(s) -
Karaosmanoğlu Barışcan,
Yılmaz Akif,
Gür Uğur Meriç,
Ergül Özgür
Publication year - 2016
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20976
Subject(s) - multipole expansion , plasmon , integral equation , discretization , method of moments (probability theory) , field (mathematics) , hyperboloid model , microwave , physics , algorithm , mathematics , mathematical analysis , optics , quantum mechanics , statistics , estimator , minkowski space , pure mathematics
We consider accurate full‐wave solutions of plasmonic problems using the multilevel fast multipole algorithm (MLFMA). Metallic structures at optical frequencies are modeled by using the Lorentz‐Drude model, formulated with surface integral equations, and analyzed iteratively via MLFMA. Among alternative choices, the electric and magnetic current combined‐field integral equation (JMCFIE) and the combined tangential formulation (CTF), which are popular integral‐equation formulations for penetrable objects, are discretized with the conventional Rao‐Wilton‐Glisson functions and used to model plasmonic structures. We discuss electromagnetic interactions in plasmonic media and show how far‐field interactions may be omitted for improving the efficiency without sacrificing the accuracy of results. © 2016 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:335–341, 2016.