V-Shape Elastomer (IMAGE) University of Pittsburgh Caption The V-shape is magnetically programmed with a uniform orientation of the nematic director, along the horizontal axis in the movie. However, the different orientation of the arms of the "V" relative to this axis cause them to twist in opposite directions in response to ultraviolet light. Credit James Waters/Balazs Lab Usage Restrictions NA License Original 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.