Microfluidic Printheads for Highly Switchable Multimaterial 3D Printing of Soft Materials

Abstract Extrusion‐based 3D printing uses multiple printing nozzles to produce multimaterial combinations. It requires complex alignment and accuracy control as well as an effective start‐stop procedure to print intermittently, which has so far proven difficult to achieve. A recently developed simpler approach is to sequence the multimaterial inks through a single nozzle that will avoid both of these requirements. Although it has been …