title: Refractive-index sensitivities of hybrid surface-plasmon resonances for a core-shell circular silver nanotube sensor.
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.
authors.forename: Elena A
authors.initials: EA
authors.lastname: Velichko
authors.forename: Alexander I
authors.initials: AI
authors.lastname: Nosich
mesh_terms: D043942:Nanotubes; D055620:Optical Phenomena; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D012834:Silver