Complex patterns (IMAGE) Massachusetts Institute of Technology Caption By modulating the speed of the second nozzle, which applies heat to a temperature-responsive filament, the researchers can vary the shade of materials to create objects with complex patterns, without the need to use multiple materials. Credit Courtesy of the researchers Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.