Exploring the Potentials of Chitin and Chitosan‐Based Bioinks for 3D‐Printing of Flexible Electronics: The Future of Sustainable Bioelectronics

Abstract Chitin and chitosan‐based bioink for 3D‐printed flexible electronics have tremendous potential for innovation in healthcare, agriculture, the environment, and industry. This biomaterial is suitable for 3D printing because it is highly stretchable, super‐flexible, affordable, ultrathin, and lightweight. Owing to its ease of use, on‐demand manufacturing, accurate and regulated deposition, and versatility with flexible and soft functional materials, 3D printing has revolutionized free‐form construction and end‐user customization. This study examined the potential of employing chitin and chitosan‐based bioinks to build 3D‐printed flexible electronic devices and optimize bioink formulation, printing parameters, and postprocessing processes to improve mechanical and electrical properties. The exploration of 3D‐printed chitin and chitosan‐based flexible bioelectronics will open new avenues for new flexible materials for numerous industrial applications.