Dynamic Interface Printing: The New, Faster and More Accurate 3D Bioprinting Technique

3D printing has transformed manufacturing in a variety of industries, enabling everything from the production of prototypes to the creation of complex biomedical structures. Among current technologies, digital light processing (DLP) has become especially popular for its speed and accuracy. However, this approach faced limitations in terms of material uniformity and heat dissipation – until now! Researchers at the University of Melbourne have come up with an innovative solution: Dynamic Interface Printing (DIP), a technique that promises to revolutionize bioprinting.

The new DIP process was presented in the journal Nature and introduces a disruptive approach that shifts the printing point to the meniscus, i.e. the surface curve of the precursor liquid. This strategic shift enables greater control over material flow and optimizes heat dissipation, two crucial elements for high-precision, high-speed 3D printing.

CAD model of the DIP printing system and its mechanical components.

What Makes This New Process Special?

The Dynamic Interface Printing process uses a pressurized tubular printhead that sits above a tank of liquid. This head is designed to project light patterns onto the meniscus, i.e. the surface of the liquid, through controlled acoustic vibrations. This step allows the printing surface to be shaped and stabilized. This process allows the material to build up uniformly and continuously, avoiding heating problems and printing errors. The printing speed with DIP can reach 0.7 millimeters per second, a considerable advance over what we knew until now.