###Vat Photopolymerization Processes
Vat photopolymerization is an additive manufacturing process in which liquid photopolymer in a vat is selectively cured by light-activated polymerization. Many of the lithography-based AM approaches (e.g., multiphoton polymerization (2PP), digital light processing (DLP), and stereolithography (SLA)) can be grouped into this category.
### Powder Bed Fusion Processes
Powder bed fusion is an additive manufacturing process in which thermal energy (provided, e.g., by a laser or an electron beam) selectively fuses regions of a powder bed. These processes are used for metals as well as polymers.
### Material & Binder Jetting Processes
Material jetting is an additive manufacturing process in which droplets of build material (such as photopolymer or thermoplastic materials) are selectively deposited. Systems based on inkjet-printing fall into this category.
Binder jetting is an additive manufacturing process in which a liquid bonding agent is selectively deposited to fuse powder materials.
[Inkjet Printing and Printing Inks](inkjet-printing/index.html)
###[Sheet Lamination and Laminated Object Manufacturing (LOM)](sheet-lamination-lom/index.html)
Sheet lamination is an additive manufacturing process in which sheets of material are bonded together to form an object.