Fluid Functional Materials and Their Application in the THz Region

Interest in terahertz waves (0.1–10THz) has increased significantly due to their unique properties. Penetrating properties and ability of THz radiation to identify substances make it possible to use in spectroscopy, communication infrastructure, medical diagnostic equipment, safety, etc. The creation of inexpensive devices and systems operating at THz frequencies is an urgent task. The paper presents the result of an experimental study of fluid functional materials for effective control of THz waves. Fluid functional materials are magneto-optical fluids with different nanoparticles, conductive silver ink structures, and polymerized magneto-optical fluid. These fluid functional materials show unique properties for THz modulation, polarization, THz attenuator and ideal absorption. In this paper, functional materials with controllable properties in the THz range are considered.