3D Printing Hydrogels: Gelatin Methacrylated (GelMA), Sodium Alginate (SA, Jin 2017), and Methacrylated Hyaluronan (MeHA, Ma 2019) Peptides: Ma 2018 (link) } Ma and Suh 2017 (link) | US Patent US10316061B2 (link) Nanomaterials: Silica Nanoparticles (Suh 2009), Iron Oxide Nanoparticles (Ma 2019)