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Paper The following article is Open access

Destructive interference between electric and toroidal dipole moments in TiO2 cylinders and frustums with coaxial voids

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Published under licence by IOP Publishing Ltd
, , Citation P D Terekhov et al 2017 J. Phys.: Conf. Ser. 929 012065 DOI 10.1088/1742-6596/929/1/012065

1742-6596/929/1/012065

Abstract

We demonstrate numerically the possibility of multipole interference in the TiO2 (titanium dioxide) microcylinders and microfrustums in the wavelength range 210-300 μm. Resonantly strong destructive interference between toroidal and electric dipole contributions to the scattered field is achieved by a geometry tuning. The toroidal and electric dipole mode overlapping at the resonant wavelength with almost total suppression of the total electric dipole moment is achieved.

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10.1088/1742-6596/929/1/012065