Diffusion Metamaterials: Basic Experimental Methods

In the field of diffusion metamaterials, the demand to fabricate materials with unique or extreme properties has significantly risen. These methods, essential in the realm of passive materials, also extend to adaptive or actively tunable materials, broadening our capability to manipulate material parameters beyond the natural scope. This advancement in material science underscores the increasing need for both passive and adaptable solutions in various application domains. The current chapter delves into the sophisticated techniques and methodologies employed to actualize the parameters required by theories introduced, including effective medium theory, adaptable multi-function design and active systems with external gain or loss.