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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 23 — Dec. 1, 2013
  • pp: 4978–4981

Refractive-index sensitivities of hybrid surface-plasmon resonances for a core-shell circular silver nanotube sensor

Elena A. Velichko and Alexander I. Nosich  »View Author Affiliations


Optics Letters, Vol. 38, Issue 23, pp. 4978-4981 (2013)
http://dx.doi.org/10.1364/OL.38.004978


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Abstract

We study the scattering and absorption of an H-polarized plane electromagnetic wave by a circular silver nanotube in the visible range of wavelengths using the separation of variables. The computed spectra of the extinction cross section display several hybrid localized surface-plasmon resonances of the dipole and multipole type. Analytical equations are derived for their resonance wavelengths. Bulk refractive-index sensitivities of nanotube-based sensors are determined, showing higher values for multipole resonances.

© 2013 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(290.0290) Scattering : Scattering
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Optics at Surfaces

History
Original Manuscript: September 2, 2013
Revised Manuscript: October 22, 2013
Manuscript Accepted: October 22, 2013
Published: November 21, 2013

Citation
Elena A. Velichko and Alexander I. Nosich, "Refractive-index sensitivities of hybrid surface-plasmon resonances for a core-shell circular silver nanotube sensor," Opt. Lett. 38, 4978-4981 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-23-4978


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