There are currently a wide variety of materials compatible with 3D printing, including powdery metals, ceramics, polymers, carbon materials, as well as composite materials such as biohybrid hydrogels ( 11– 13). The properties of the feedstocks are crucial for 3D printing in terms of processability, shape maintenance, and functionality. It is applicable to a wide range of products, thus promoting the interactions and collaborative development of science, engineering, and high-tech industry ( 1– 10). Three-dimensional (3D) printing is a revolutionary technique that utilizes computational control to process feedstocks into materials with sophisticated architectures. These performances, together with the biocompatibility of the constituents, indicate that the present ink represents a leap forward to the next-generation 3D printing and would unlock a wide range of real-life applications. Moreover, the printed objects possess dual thermal responsiveness, which results in visible color changes around body temperature.
#Cannon image mixer series
Based on this, we print a series of graphics and 3D objects with angle-independent color appearances and demonstrate the versatility of the printing system in different substrates. The incorporation of the hydrogel further enables shape maintenance of the ink after printing via in situ ultraviolet-crosslinking.
The ink maintains a cholesteric liquid crystalline state that gives rise to the structural color, and the rheology properties of the ink are optimized by gelatin, which allows the ink to flow during printing and form self-supporting structures after printing. In this study, we propose a printable structural color ink composed of cholesteric cellulose liquid crystals together with gelatin and a thermal-responsive hydrogel. To this end, structural color is an ideal coloring mechanism, which processes unique nonfading ability and tunable optical features.
Color reproduction is an important aspect of three-dimensional (3D) printing in terms of creating a colored visual appearance with high fidelity and stability.
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