Zhu Junzhe, Zhang Qiang, Yang Tianqing, Liu Yu, Liu Ren
Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, Jiangsu, China.
International Research Center for Photoresponsive Molecules and Materials, Jiangnan University, 214122, Wuxi, Jiangsu, China.
Nat Commun. 2020 Jul 10;11(1):3462. doi: 10.1038/s41467-020-17251-z.
3D printing consisted of in-situ UV-curing module can build complex 3D structures, in which direct ink writing can handle versatile materials. However, UV-based direct ink writing (DIW) is facing a trade-off between required curing intensity and effectiveness range, and it cannot implement multiscale parallelization at ease. We overcome these difficulties by ink design and introducing near-infrared (NIR) laser assisted module, and this increases the scalability of direct ink writing to solidify the deposited filament with diameter up to 4 mm, which is much beyond any of existing UV-assisted DIW. The NIR effectiveness range can expand to tens of centimeters and deliver the embedded writing capability. We also demonstrate its parallel manufacturing capability for simultaneous curing of multi-color filaments and freestanding objects. The strategy owns further advantages to be integrated with other types of ink-based 3D printing technologies for extensive applications.
由原位紫外光固化模块组成的3D打印能够构建复杂的三维结构，其中直接墨水书写可以处理多种材料。然而，基于紫外光的直接墨水书写（DIW）面临着所需固化强度和有效范围之间的权衡，并且它不能轻松实现多尺度并行化。我们通过墨水设计和引入近红外（NIR）激光辅助模块克服了这些困难，这提高了直接墨水书写的可扩展性，以固化直径达4毫米的沉积长丝，这远远超出了现有的任何紫外辅助DIW。近红外有效范围可以扩展到几十厘米，并提供嵌入式书写能力。我们还展示了其用于同时固化多色长丝和独立物体的并行制造能力。该策略具有进一步的优势，可与其他类型的基于墨水的3D打印技术集成以实现广泛应用。
