Figure 2 (IMAGE) Institute for Basic Science Caption Remotely controlled rotation and tumbling motion of the rotor in the presence of chemical stimulants and a photo-responsive molecule. Credit Institute for Basic Science Usage Restrictions Attribution Required 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.