|  | 
         
          | Description: 
             This diagram depicts a 
            molecular motor. The top molecule is activated, and the dark green 
            ring has shuttled to the left. The molecule on the bottom shows an 
            instant later, when the energy state of the molecule changes and the 
            ring shuttles back. |   
          | Source: 
             University of Amsterdam |   
          | Story:  Light 
            powers molecular piston TRN April 18, 2001
 |   
          | TRN Categories: 
             Nanotechnology; Biological, 
            Chemical, DNA and Molecular Computing |   
          | Form: 
             Still |  |