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Development of 3-dimensional Printing Techniques using Hydrogel : Stimuli-Sensitive Fabrication and Biomedical Application

초록 (요약문)

Nature is the source of inspiration in mimicking structure and motions for several functions. Nature-based structure and motion have been developed for a soft actuator, tissue engineering, biodevices, and wound healing. Consideration in material and fabrication method selection plays an important role. Biocompatibility, biodegradability, and mechanical properties of the material are essential as the fabrication method depending on the purposes. The 3-dimensional (3D) printing fabrication strategy is one of the most suitable fabrication strategies for multi-purposes. Compared with the traditional molding process for 3D fabrication, the 3D printing strategy is faster and more effective, it only needs one-step fabrication, and internal fabrication is also possible. There are several 3D printing strategies, for instance, inkjet, extrusion-based laser-assisted-based, and stereolithography-based printing. The specific printing strategy will be suitable for specific purposes. The combination of unique material with special characteristics and 3D printing strategy could be used to fabricate external stimuli soft robotic. Combining diffusive crosslink strategy, a particular material, and 3D printing strategy make 3D hollow structure is possible to be fabricated. The advanced combination between material and fabrication processes offers new opportunities and challenges in the soft robotic and tissue engineering fields. Herein, the recent materials, 3D fabrication strategies, application of 3D printing strategies in soft robotic and tissue engineering are discussed.

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