Direct ink writing (DIW) is the most versatile AM technique in terms of materials development, it enables the creation of complex 3D shapes using any material by formulating a paste with controlled rheology. One of the main challenges of DIW is to design and formulate the viscoplastic and self-healing soft inks that easily flow under shear and quickly recover upon deposition. Researchers often look for flexible approaches that can be adapted to formulate printing inks with a wide range of materials. Here we report a supra-molecular interaction system composed of triethanolamine and ammonium oleate for application in DIW technology. Almost any materials (eg. rubber, plastic, ceramic, metal and composites) can be integrated into the ink system, and then can be 3D printing via shear-thinning DIW method. Furthermore, the solid contents of the ink system are higher than 80%, avoiding the formation of porous structure and dimensional changes after shaping. Present DIW method was used to construct sensors based on multi-material for application in real-time monitoring human health. This work may provide an new method to develop 3D printing materials for various practical applications.

直接墨水书写 (DIW) 是材料开发方面最通用的 AM 技术，它可以通过配制具有受控流变特性的糊剂，使用任何材料创建复杂的 3D 形状。DIW 的主要挑战之一是设计和配制粘塑性和自修复软油墨，在剪切下容易流动并在沉积时快速恢复。研究人员经常寻找灵活的方法，以适应使用多种材料配制印刷油墨。在这里，我们报告了一种由三乙醇胺和油酸铵组成的超分子相互作用系统，用于 DIW 技术。几乎任何材料（例如橡胶、塑料、陶瓷、金属和复合材料）都可以集成到墨水系统中，然后可以通过剪切稀化 DIW 方法进行 3D 打印。此外，油墨体系固含量高于80%，避免了成型后形成多孔结构和尺寸变化。目前的DIW方法用于构建基于多材料的传感器，用于实时监测人体健康。这项工作可能为开发用于各种实际应用的 3D 打印材料提供一种新方法。