Advances in multi-material polymer 3D printing depositions: techniques, materials combinations, challenges, and emerging applications
Sohaib Z. Khan
Multi-material polymer additive manufacturing enables the fabrication of components with spatially varied mechanical, thermal, electrical, and functional properties within a single build, overcoming the intrinsic limitations of single-material 3D printing. By combining thermoplastics, elastomers, photopolymers, and functional polymer composites, this approach allows material composition to be programmed alongside geometry, enabling monolithic fabrication of multifunctional and heterogeneous poly