High-precision 3D printing technology opens to almost endless opportunities to design complex shapes present in tailored architected materials. The scope of this work is to review the latest studies regarding 3D printed lattice structures that involve the use of photopolymers fabricated by Material Jetting (MJ), with a focus on the widely used Polyjet and MultiJet techniques. The main aspects governing this printing process are introduced to determine their influence during the fabrication of 3D printed lattices. Performed experimental studies, considered assumptions, and constitutive models for the respective numerical simulations are analyzed. Furthermore, an overview of the latest extensively studied 3D printed architected lattice materials is exposed by emphasizing their achieved mechanical performances through the use of Ashby plots. Then, we highlight the advantages, limitations, and challenges of the material jetting technology to manufacture tunable architected materials for innovative devices, oriented to several engineering applications. Finally, possible approaches for future works and gaps to be covered by further research are indicated, including cost and environmental-related issues.

翻译：高精度3D打印技术为设计复杂形状的定制化点阵材料开辟了几乎无限的可能性。本文旨在综述基于材料喷射（MJ）技术的光聚合物3D打印点阵结构的最新研究进展，重点关注广泛使用的Polyjet和MultiJet工艺。首先介绍该打印工艺的主要控制因素，以确定其对3D打印点阵结构制造过程的影响。分析现有实验研究、假设条件及相应数值模拟的本构模型。进一步通过Ashby图重点展示最新广泛研究的3D打印点阵材料所实现的力学性能。随后，指出材料喷射技术在制造面向多种工程应用的可调谐点阵材料时的优势、局限性与挑战。最后，提出未来研究方向及需进一步填补的研究空白，涵盖成本与环境相关问题。