Figure 5-.

Different types of mixers used for multi-material bioprinting. A, B) Photograph and schematic of an impeller-based active mixer used for blending two bioinks. Reproduced with permission.^[127] Copyright 2015, The Authors, published by National Academy of Sciences. C) Schematic design of a passive microfluidic mixer. Reproduced with permission.^[131] Copyright 2019, Institute of Physics. D) Continuous chaotic printing experimental setup. E) Cross-section of the multi-lamellar printed fiber. Scale bar: 250 µm. F) Schematic of the experimental design for the chaotic printing of two inks using a KSM and a syringe pump. G) Side views of KSM at two different angles. H) Illustration of flow splitting action in a six-element KSM with a diameter of D. The distance between lamellae is shown by δ. Reproduced under the terms of the CC-BY Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0).^[134] Copyright 2020, The Authors, published by Institute of Physics.