A tunable cylindrical all dielectric optical nanoantenna has been proposed. A silicon nanocylinder of radius 60 nm and
height 150 nm has been considered. The azimuthally symmetric, complete forward scattering at first Kerker’s condition
and backward scattering with minimum forward scattering at second generalized Kerker’s condition in near infra-red
region has been observed for the proposed design which makes silicon nanocylinder a promising candidate for optical
nanoantenna applications. The effect of the dimensions of the dielectric nanocylinder on the scattering properties of the
cylindrical nanoantenna has been analyzed using finite element method. We have analyzed that the variation in diameter
of nanocylinder has great influence on the strength of interference of electric and magnetic dipolar resonances. Further,
we have observed tuning ability of the cylindrical nanoantenna with respect to the variation in its radius.
Inder Devi, Reena ., Yogita Kalra, and R. K. Sinha, "Design of tunable cylindrical dielectric nanoantenna," Proc. SPIE 9919, Nanophotonic Materials XIII, 991903 (Presented at SPIE Nanoscience + Engineering: August 30, 2016; Published: 16 September 2016); https://doi.org/10.1117/12.2237849.
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