Additive manufacturing based on Digital Light Processing (DLP) is one of the most promising methods to construct delicate structures at high speed. However, the precision as well as the speed of such process is severely limited by the high vertical adhesion of the cured resin at the curing interface. To overcome this challenge of general curing interface, in this work we proposed a lubricant infused surface, taking inspiration of the peristome surface of the pitcher plant. Real-time measurement of adhesion force and video monitoring suggest that the ultra-low adhesive interface remarkably reduces interfacial adhesion by inhibiting the direct contact of the cured resin with the solid surface, and increasing the refilling speed of liquid resin. The introduction of the lubricant infused surface can effectively reduce the adhesion generated during the curing process, therefore promising a continuous 3D printing process. This ultra-low adhesive interface is effective for continuous 3D printing and provides insights into the physical mechanisms in reducing vertical solid-solid interfacial adhesion.

Bioinspired ultra-low adhesive interface for 3D printing

256th National Meeting (2018)

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