  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.
