3D Printing for Super‐Wetting Surfaces

Abstract This paper explores the use of 3D printing technology in the fabrication of super‐wetting surfaces, which exhibit extreme wetting behaviors such as superhydrophobicity and superhydrophilicity. Traditional methods for creating these surfaces, such as photolithography and etching, face limitations in handling complex structures and large‐scale production. In contrast, 3D printing, particularly techniques like stereolithography (SLA) and digital light processing (DLP), offers the advantages of precision, customization, and material efficiency, allowing for the creation of intricate microstructures that control wetting properties. This review discusses recent advances in 3D printing, focusing on its ability to design surfaces with gradient and anisotropic wetting behaviors, and its integration of multiple materials for advanced functionality. The potential applications in fields such as oil–water separation, self‐cleaning, and biomedical engineering are also examined, highlighting the versatility of 3D printing in producing high‐performance super‐wetting surfaces. However, challenges such as material limitations and process optimization remain, and the future of this technology in real‐world applications is also considered.