Sun - Illustration of process (IMAGE) Northwestern University Caption The new dynamic 3D printing method developed at Northwestern University uses light and a high-precision robot arm to print a variety of structures. (A double helix is shown). Credit Northwestern University Usage Restrictions Credit must be given License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.