Bike Handle (IMAGE) Massachusetts Institute of Technology Caption Speed-modulated ironing can be used to vary coarseness of heat-responsive materials in a fine-grained manner, enabling the fabrication of objects like this bike handle that has varied textures to improve a rider's grip. 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.