Growth and characterization of chiral gold nanorods

Abstract

Nanostructures with plasmonic functionalities have become an active topic of research. By controlling morphological parameters, optical properties of the nanostructures can be tailored with the applications in, for example, biosensing and gas areas and in integrated photonic devices for telecommunications. Considering the fabrication, hole-mask colloidal lithography (HCL) is a versatile method to produce randomly distributed nanostructures in large areas (over cm2) such as discs, rings and crescent-shaped structures [1], as well as magneto-optically active nanostructures by combining noble metals with ferromagnetic metals. In this work we present a complex structure formed by two gold nanorods [2] separated by a dielectric calcium fluoride (CaF2) layer in a chiral configuration obtained by HCL.