2D Magnetoinductive Waveguide Fabricated Using Molten Field's Metal

This report presents a 2D magnetoinductive waveguide fabricated with a recently developed method based on fused deposition modelling and liquid Field's metal injection. Standard 3D printing equipment is used for the fabrication of a dielectric mold designed with buried cavities. By filling these cavities with molten Field's metal via injection, elaborate 3D geometries can be realised inside the dielectric. Using this approach a metamaterial surface consisting of 35 resonators was fabricated in a single sample. The structure was investigated using experimental, numerical and analytical methods. Each resonator is shown to be resonant around 660MHz with a quality factor of 130. In the waveguide, each element is coupled to its neighbours, resulting in a bandwidth of over 200MHz.