In the ZAP group I synthesize photopolymerized hydrogels using visible and NIR light via 3D DLP printing. Many medical 3D printing applications utilize extrusion or UV light which can be time intensive, high in energy, and limit bioapplications due to effects like cell damage (ROS, cytotoxicity, poor biocompatibility in vivo and in vitro), poor light penetration depth, slow timescale, high shear rate, and high extrusion temperature(s). In comparison, printing with visible and NIR light using a DLP system is both faster and lower in energy, has better penetration depth in addition to biocompatibility, and should have high print resolution which will therefore expand the range of medical applications.