Abstract: A diffuser for incorporating one or more infusion materials into a host material. The diffuser includes a rotor 12 and stator 30 rotating relative to one another. The infusion materials are drawn through openings in the rotor and stator. During movement of the rotor, the openings cause cavitation of the host material in the channel 32 resulting in diffusion of the infusion materials through the openings and into the host material. The opening patterns in the rotor and stator can be designed to operate at a single frequency or a multiple frequencies. The frequencies of operation may affect bonding between the infusion materials and the host material and may also be effective in breakdown of complex molecular structures.