Slippery Hydrogel with Desiccation-Tolerant "Skin" for High-Precision Additive Manufacturing

Highlights A bioinspired strategy is proposed to construct slippery hydrogel with desiccation-tolerant ‘skin’. The problems of dehydration, collapse, and deformation of hydrogel materials are solved. Lubrication properties of slippery hydrogel are improved by harnessing natural moisturizing factors. High-precision manufacturing of hydrogels with complicated geometries and customizable microstructures is realized.