1. Overview of crack self-healing / Guoqiang Li, Xiaming Feng and Harper Meng -- 2. Healing efficiency haracterization of self-healing polymers / Guoqiang Li and Xiaming Feng -- 3. Theoretical aspects and modeling of healing efficiency in polymeric systems / Amir Shojaei and Guoqiang Li -- 4. A modular concept for the solid-state healing of polymer resins and composites / Bodiuzzaman Jony, G.M. Shashi, Sameer B. Mulani and Samit Roy -- 5. Capsules-based self-healing polymers and polymer composites / Dong Yu Zhu, Fang Chen, Min Zhi Rong and Ming Qiu Zhang -- 6. Microvascular-based self-healing materials / Christopher J. Hansen -- 7. Reversible chemical bond-based self-healing materials / Stefan Zechel and Martin D. Hager -- 8. Supramolecular network-based self-healing polymer materials / Junsu Park, Motofumi Osaki, Akira Harada and Yoshinori Takashima 9. Self-healing coatings / Anthony E. Hughes, Priscilla Johnston and Tristan J. Simons -- 10. Self-healing elastomers / Weihang Li, Linjun Zhang, Yong Zhu and Jinrong Wu -- 11. Shape memory polymer-based self-healing composites / Pengfei Zhang, Lu Lu, Gefu Ji, Jones Nji, Manu John and Guoqiang Li -- 12. Self-healing composites with embedded shape memory polymer fibers and polymeric artificial muscle wires / Pengfei Zhang, Harper Meng, Oludayo Ajisafe and Guoqiang Li -- 13. Additive manufacturing of self-healing polymers and composites / Xu He and Kai Yu -- 14. Multifunctional thermoset polymers with self-healing ability / Xiaming Feng, Ang Li and Guoqiang Li -- 15. Recyclable thermoset polymers: beyond self-healing / Yue Liang, Xiao Kuang, Xiaohao Sun and H. Jerry Qi.