1. Introduction to 3D and 4D printing technology: State of the art and recent trends2. 3D and 4D printing of nanomaterials: Processing considerations for reliable printed nanocomposites3. Polymer-based conductive composites for 3D and 4D printing of electrical circuits4. 3D and 4D printing of pH-responsive and functional polymers and their composites5. Additive manufacturing (AM) of medical devices and scaffolds for tissue engineering based on 3D and 4D printing6. Shape memory polymer blends and composites for 3D and 4D printing applications7. Fabrication of 3D and 4D polymer micro- and nanostructures based on electrospinning8. Multifunctional polymer composites for 3D and 4D printing9. Graphene and graphene oxide-reinforced 3D and 4D printable composites10. 3D and 4D printing of polymer/CNTs-based conductive composites11. Medical and biomedical applications of 3D and 4D printed polymer nanocomposites12. Carbon black-reinforced 3D and 4D printable conductive polymer composites13. Photoactivate resin formulations and composites for optical 3D and 4D printing of functional materials and devices14. Hydrogels and hydrogel composites for 3D and 4D printing applications15. 3D and 4D printing of biomaterials and biocomposites, bioinspired composites, and related transformers16. 3D and 4D printed polymer composites for electronic applications17. Fundamentals and applications of 3D and 4D printing of polymers: Challenges in polymer processing and prospects of future research