Composite media based on chiral elements and their combinations with ferromagnetic structures

Abstract

In the paper composite media based on chiral elements with various periodic inclusions are considered. These media are artificial crystals, in which structural resonances are observed. Under certain conditions particles of these crystals have resonance-frequency behavior, manifesting in a rapid change of media parameters at certain frequency ranges. Composite media based on resonant particles, into which a defect is introduced (by removing an element out of crystal lattice) can be used as high quality (high-Q) resonator. If the defect introduction is continued, it is possible to make a waveguide channel and, thus, to create a wide range of functional elements, as well as devices of new generation based on these elements, - a new class of perspective devices of microwave and THz-ranges. In the course of investigations electrodynamic characteristics of chiral media are estimated, constitutive equations are found, and the influence of ferromagnetic materials on propagation conditions of electromagnetic waves is researched.