Abstract
The field of additive manufacturing has experienced noticeable advancements with the emergence of multimaterial (MM) 3D printing methods. This chapter investigates the technologies in the realm of metamaterials, unveiling a novel avenue for engineering materials with unprecedented mechanical, thermal, and electromagnetic properties. By enabling precise control over material composition, structure, and geometry at a micro- and mesoscale level, MM 3D printing of metamaterials transcends the limitations of traditional manufacturing techniques. It reviews key breakthroughs in materials science, design methodologies, and fabrication processes that have paved the way for the creation of complex, multifunctional metamaterial structures. Additionally, the potential applications across various industries, including aviation, electronics, and medical devices, in which the tailored properties of these structures promise to revolutionize product design and performance have been discussed. As researchers continue to delve into the synergistic possibilities of MM 3D printing and metamaterial engineering, this chapter presents a comprehensive outlook of present state-of-the-art, challenges, and prospects in this rapidly evolving field.