Figure 6-.
Multi-nozzle multi-material 3D printing technologies. A) The Integrated tissue-organ printer setup consisting of four separate nozzles. B) Schematic of 3D-printed basic pattern with multiple bioinks and the supporting PCL ink. Reproduced with permission.[139] Copyright 2016, Springer Nature. C) Optical images of top and side views of multi-nozzle printheads with various types of inks. D) Generating voxelated multi-material filaments at an increasing switching frequency, where only one of the nozzles is shown. E) Comparing the effect of subcritical and supercritical pressures in the occurrence of backflow. F) The effect of using asymmetric microfluidic channels on the maximum flow of the active channel (Qfmax), where only one of the nozzles is shown. Reproduced with permission.[140] Copyright 2019, Springer Nature.