3D printing History of engineering & technology P(VDF-TrFE) PLA95 TNF-α capture TiO2 photocatalytic ZnO particles alginate antibacterial antibacterial activity antibacterial coatings antibody immobilization antioxidant activity bioactive glass biocompatibility biocompatible polymers biomaterials biomedical biomedical applications biomimetic scaffolds biopolymers bone regeneration cancer treatment cell attachment cell proliferation composite fibres composite nanofiber cytotoxicity drug delivery drug release