Abstract
A nanolens based on a metallic nanorod has been considered as a prospective candidate for transporting subwavelength information. Such a lens is tuned to a particular frequency by tailoring the length of the nanorod. In this paper, we have investigated the impact of filling ratio on the subwavelength imaging capabilities of such a lens. Through full-wave electromagnetic simulation, we have demonstrated that the imaging performance of a silver (Ag) nanorod array depends not only on the length and periodicity but also on the filling ratio or the radius of the nanorod. We have studied this impact for nanorods having different cross-sectional shapes such as cylindrical and triangular and examined their performances for various filling ratios.
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