Liquid Polymer Lab PolyJet Stratasys J750 Digital Anatomy Printer 490x390x200 mm (19.3×15.4×7.9 in) build volume 14 μm minimum layer thickness Multi-material printing Full color printing Please ask for currently available materials What is PolyJet? PolyJet is a form of material jetting additive manufacturing, where UV-curable resins are jet through an inkjet nozzle and cured as individual part layers. After each layer is cured, another is deposited above it until the entire part has been created. PolyJet Advantages On-the-fly material mixing Full color parts Mechanical property matching to human bone and tissue PolyJet Considerations Support structures are required, but can be inserted as a different material from the primary part material Materials limited to UV-curable photopolymers Stereolithography (SLA) 3D Systems SLA 5000 508x508x584 mm (20x20x23 in) build volume 50 μm layer thickness Optically transparent parts What is Stereolithography? SLA uses an ultraviolet (UV) light source to cure layers of photopolymer resins. The resins are stored in a vat, and the build surface is dipped into the vat until it is coated with a thin layer of resin. The UV light source for the SLA 5000 at the AM Center is a laser that scans the cross section of the part to selectively cure the resin at each layer. Then, the build surface is lowered by the thickness of a single layer, and resin is recoated across the build surface to repeat the process. SLA Advantages Ability to create transparent parts Improved surface finish over other AM systems Large build volume SLA Considerations Limited to UV-curable resins Traditionally poorer mechanical properties Parts degrade over time 2-Photon Polymerization Nanoscribe Quantum X Shape 100nm minimum feature size in xy-plane Surface roughness down to 5nm Compatible with a suite of photoresins and substrates What is 2-PP? 2-PP is a form of vat polymerization additive manufacturing, and utilizes two-photon absorption to cure layers of photopolymer. Molecules of neighboring photoresin molecules simultaneously absorb the energy of two photons, which is only likely to occur within focal volume of pulsed light. This precise control over the polymerization process enables incredibly small scale printing. 2-PP Advantages Submicron resolution Highly complex, 3D micro-and nanostructures with superior surface quality Rapid, mask-free prototyping without the need for supports 2-PP Considerations High-precision results require considerable parameter optimization Materials limited to UV-curable photopolymers
