
Proceedings Paper
Polarizability extraction for rapid computation of Fano resonance in nanoring latticesFormat | Member Price | Non-Member Price |
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Paper Abstract
Rapid modeling of far-field Fano resonance supported by lattices of complex nanostructures is possible with the coupled
dipole approximation (CDA) using point, dipole polarizability extrapolated from a higher order discrete dipole
approximation (DDA). Fano resonance in nanostructured metamaterials has been evaluated with CDA for spheroids, for
which an analytical form of particle polarizability exists. For complex structures with non-analytic polarizability, such as
rings, higher order electrodynamic solutions must be employed at the cost of computation time. Point polarizability is
determined from the DDA by summing individual polarizable volume elements from the modeled structure. Extraction
of single nanoring polarizability from DDA permitted CDA analysis of nanoring lattices with a 40,000-fold reduction in
computational time over 1000 wavelengths. Maxima and minima of predicted Fano resonance energies were within 1%
of full volume elements using the DDA. This modeling technique is amenable to other complex nanostructures which
exhibit primarily dipolar and/or quadrupolar resonance behavior. Rapid analysis of coupling between plasmons and
photon diffraction modes in lattices of nanostructures supports design of plasmonic enhancements in sustainable energy
and biomedical devices.
Paper Details
Date Published: 10 September 2014
PDF: 5 pages
Proc. SPIE 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII, 91633O (10 September 2014); doi: 10.1117/12.2061227
Published in SPIE Proceedings Vol. 9163:
Plasmonics: Metallic Nanostructures and Their Optical Properties XII
Allan D. Boardman, Editor(s)
PDF: 5 pages
Proc. SPIE 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII, 91633O (10 September 2014); doi: 10.1117/12.2061227
Show Author Affiliations
Gregory T. Forcherio, Univ. of Arkansas (United States)
Drew DeJarnette, The Univ. of Tulsa (United States)
Drew DeJarnette, The Univ. of Tulsa (United States)
Published in SPIE Proceedings Vol. 9163:
Plasmonics: Metallic Nanostructures and Their Optical Properties XII
Allan D. Boardman, Editor(s)
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