Direct-Print Photopolymerization (DPP) is a 3D printing process, involving direct-print and direct-cure of a photopolymer at the same time. The advantages include shape retention of a deposited filament and broad range of a material. This process enables the use of various viscoelastic and composite materials with applications of sensors and actuators.
(Source: Vatani, M., Choi, J.W.*, 2017, “Direct-print photopolymerization for 3D printing,” Rapid Prototyping Journal, Vol. 23, Issue 2, pp. 337-343.)